Tektronix Computer Hardware 070 9180 01 User Manual

User Manual

Option 01

VXI Interface Daughter Board

070-9180-01

This document applies for firmware version 1.00

and above.

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WARRANTY

Tektronix warrants that this product will be free from defects in materials and workmanship for a period of three (3) years

from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either

will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the

defective product.

In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the

warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for

packaging and shipping the defective product to the service center designated by Tektronix, with shipping charges prepaid.

Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the

Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any

other charges for products returned to any other locations.

This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate

maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting

from attempts by personnel other than Tektronix representatives to install, repair or service the product; b) to repair

damage resulting from improper use or connection to incompatible equipment; or c) to service a product that has been

modified or integrated with other products when the effect of such modification or integration increases the time or

difficulty of servicing the product.

THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY

OTHER WARRANTIES, EXPRESSED OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY

IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND

EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX

AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR

CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS

ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

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Table of Contents

General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

iii

vii

Getting Started

Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Functional Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–1

1–4

1–5

1–9

1–10

Operating Basics

Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Instrument I/O: VXIbus Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–1

2–2

Syntax and Commands

Command Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–1

Functional Command Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

System Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Module Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–11

Command Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IEEE-488.2 Common Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–15

3–59

Status and Events

Status and Event Reporting System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Status Byte Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service Request Enable Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Standard Event Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Event Status Enable Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The Output Queue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The System Error and Event Queue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Status and Event Reporting Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4–1

4–2

4–3

4–4

4–5

4–6

Appendices

Appendix A: Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendix B: Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendix C: User Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A–1

B–1

C–1

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Table of Contents

Appendix D: Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the Replaceable Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

D–1

D–2

Glossary and Index

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General Safety Summary

Review the following safety precautions to avoid injury and prevent damage to

this product or any products connected to it.

Only qualified personnel should perform service procedures.

While using this product, you may need to access other parts of the system. Read

the General Safety Summary in other system manuals for warnings and cautions

related to operating the system.

Injury Precautions

Avoid Electric Overload

To avoid electric shock or fire hazard, do not apply a voltage to a terminal that is

outside the range specified for that terminal.

Avoid Electric Shock

To avoid injury or loss of life, do not disconnect probes or test leads from this

product while it is connected to a voltage source.

Do Not Operate Without

Covers

To avoid electric shock or fire hazard, do not operate this product with covers or

panels removed.

Use Proper Fuse

To avoid fire hazard, use only the fuse type and rating specified for this product.

To avoid electric shock, do not operate this product in wet or damp conditions.

Do Not Operate in

Wet/Damp Conditions

Do Not Operate in an

Explosive Atmosphere

To avoid injury or fire hazard, do not operate this product in an explosive

atmosphere.

Avoid Exposed Circuitry

To avoid injury, remove jewelry such as rings, watches, and other metallic

objects. Do not touch exposed connections and components when power is

present.

Product Damage Precautions

Provide Proper Ventilation

To prevent product overheating, provide proper ventilation.

iii

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General Safety Summary

Do Not Operate With

Suspected Failures

If you suspect there is damage to this product, have it inspected by qualified

service personnel.

Safety Terms and Symbols

Terms in This Manual

These terms may appear in this manual:

WARNING. Warning statements identify conditions or practices that could result

in injury or loss of life.

CAUTION. Caution statements identify conditions or practices that could result in

damage to this product or other property.

Terms on the Product

These terms may appear on the product:

DANGER indicates an injury hazard immediately accessible as you read the

marking.

WARNING indicates an injury hazard not immediately accessible as you read the

marking.

CAUTION indicates a hazard to property including the product.

Symbols on the Product

The following symbols may appear on the product:

DANGER

High Voltage

Protective Ground

(Earth) Terminal

ATTENTION

Refer to Manual

Double

Insulated

Certifications and Compliances

Safety Certification of

Plug-in or VXI Modules

For modules (plug-in or VXI) that are safety certified by Underwriters Laborato-

ries, UL Listing applies only when the module is installed in a UL Listed

product.

For modules (plug-in or VXI) that have cUL or CSA approval, the approval

applies only when the module is installed in a cUL or CSA approved product.

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General Safety Summary

Compliances

Consult the product specifications for Overvoltage Category, and Safety Class.

Overvoltage Category

The following defines overvoltage categories:

CAT III: Distribution level mains, fixed installation.

CAT II: Local level mains, appliances, portable equipment

CAT I: Signal level, special equipment or parts of equipment, telecommunica-

tion, electronics

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Preface

This manual assumes you are familiar with VXIbus instruments and operation

and with the purpose and function of this instrument.

Please read and follow all instructions for installation and configuration. Use the

Installation Checklist to ensure proper installation and to record your initial

settings.

The Operating Basics section gives a summary of VXIbus operation and

presents an overview of the operation of this instrument.

The Syntax and Commands section provides a summary of all the commands

followed by detailed descriptions of each command.

The Status and Events section contains an explanation of the Status and Event

Reporting System and lists the system messages. Appendix B: Examples contains

example programs that demonstrate the programmable features of this instru-

ment.

You may also want to keep the Reference Guide by the instrument.

Conventions

The names of all switches, controls, and indicators appear in this manual exactly

as they appear on the instrument.

Specific conventions for programming are given in the sections Syntax and

Commands and Appendix B: Examples.

vii

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Getting Started

This section begins with a brief description of the Option 01 VXI Interface

Module, and explains how to configure and install the module on a relay

switching module in a VXIbus mainframe. When the Option 01 is installed on a

relay module, a quick functional check (described in this section of the User

Manual for the relay module) assures that the instrument operates properly.

Product Description

The Option 01 VXI Interface Module is a printed circuit board assembly for use

in a mainframe conforming to the VXIbus Specification. The Option 01 provides

a VXI word serial protocol servant interface to the SurePatht family of VXI

relay modules. The Option 01 is a daughter board assembly measuring approxi-

mately 3I × 9I that is installed as an optional daughter board on one of the

SurePatht C-size VXI switching modules. The daughter board accepts

SCPI-compatible commands from its commander using VXI word serial

protocol. The daughter board controls the relay module on which it is installed,

and controls additional relay modules installed in adjacent slots to its right via

the VXI P2 local bus. The daughter board is capable of controlling from one to

12 relay modules including members of the SurePatht family of relay switching

modules and VX4372 and VX4374 Scanner Slave modules. In this document,

these modules will be referred to as “local bus slaves.”

The VXI Interface Module includes the following features:

CPU:

Zilog Z88C00 Microcontroller with 20 MHz Clock

64 Kbyte of EPROM and 32 Kbyte of RAM

VXI Interface:

VXI Rev 1.4 Message Based Device. IEEE-488.2 device

Supports Fast Handshake word serial protocol data transfers

Logical Address selectable with two rotary hexadecimal switches

Interrupter level selectable with a rotary hexadecimal switch. Selects one of

seven levels or disables interrupt generation

Command programmable control of one to eight VXI TTL triggers

Command programmable monitoring of one or more VXI TTL triggers

1–1

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Getting Started

The Local Bus Interface function of the Option 01 provides serial I/O interface

for control of scanner slave and SurePatht relay modules, monitors the power

fuses of all local bus slave modules that it controls, and provides a serial input

interface to identify each local bus slave that it controls.

As part of the self test, SurePatht modules automatically verify the control

logic every time a relay operation is performed.

Figure 1–1 shows the Option 01.installed on a SurePatht relay module.

Figure 1–2 shows a typical SurePatht configuration.

LOGICAL

ADDRS

Option 01

INTRPT

Switches as viewed

from the rear of instrument

(labels are on the back shield)

F1291

Figure 1–1: Option 01 Indicators and Switch Locations

1–2

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Getting Started

VXI interface &

slave controller

daughter board

Backplane

connectors

Front panel

connectors

VXI backplane

local bus

Daughter board

connectors

Figure 1–2: Typical SurePath Configuration

Fuses

Each relay module that the Option 01 Module controls has a fuse that limits the

amount of current that the module can draw from the VXI backplane +5 V power

pins. This fuse protects the module in case of an accidental shorting of the power

bus or any other situation where excessive current might be drawn.

The Option 01 Module monitors the state of the fuses of each of the relay

modules that it controls. If a fuse opens on one of these modules, the Option 01

Module will assert SYSFAIL* on the VXIbus.

If the +5 V fuse on the module on which the Option 01 Module is installed

opens, the VXIbus Resource Manager will be unable to assert SYSFAIL

INHIBIT on the Option 01 to disable SYSFAIL*.

If a +5 V fuse opens, remove the fault before replacing the fuse. Replacement

fuse information is given in the Specifications section of the user manual for the

appropriate relay module.

BITE (Built-in Test

Equipment)

Built-in Test Equipment (BITE) is provided by extensive self tests that are

automatically invoked on power-on and can also be invoked on command.

Circuitry tested includes the CPU and all memory, and the relay control circuitry

on each relay module controlled by the Option 01.

1–3

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Getting Started

Accessories

Table 1–1 lists the standard accessories included with the Option 01.

Table 1–1: Standard Accessories

Accessory

Part Number

070-9180-XX

070-9198-XX

Option 01 User Manual

Option 01 Reference

Controls and Indicators

Switches

The following controls are provided to select the functions of the Option 01

operating environment.

The Logical Address switches and VMEbus Interrupt Level Select switch must be

correctly set to insure proper operation. See Configuration for details on how to

set the switches.

Configuration

The following switches must be correctly set to ensure proper operation. Refer to

Figure 1–1 for their physical locations.

Logical Address Switches

Each functional module in a VXIbus System must be assigned a unique logical

address, from 1 to decimal 255 (hexadecimal FF). The base VMEbus address of

the Option 01 is set to a value between hexadecimal C0 (C000₁₆) and hexadeci-

mal FF (FFC0₁₆) by two hexadecimal rotary switches. Align the desired switch

position with the arrow on the module shield.

The physical address of the instrument is on a 64 byte boundary. If the Logical

Address switch representing the most significant digit (LA–HI) of the logical

address is set to position X and the switch representing the least significant digit

(LA–LO) of the logical address is set to position Y, then the base physical

address of the Option 01 will be [(40₁₆× XY₁₆) + C000₁₆].

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Getting Started

For example:

Base Physical Address

hex

L.A.

decimal

(64 * 10) + 49152 = 49792 (40 * A ) + C000 = C280

16 16 16 16

(64 * 21) + 49152 = 50496 (40 * 15 ) + C000 = C540

16 16 16 16

LA. is the Logical Address

IEEE-488 Address

In order to use and program the Option 01 daughter board in an IEEE-488

environment you must know the IEEE-488 address of the module. Different

manufacturers of IEEE-488 interface devices might have different algorithms for

equating a logical address with an IEEE-488 address. Consult the operating

manual of the IEEE-488 Interface Slot 0 module being used.

VMEbus Interrupt Level

Select Switch

Each function module in a VXIbus System can generate an interrupt at a

specified level on the VMEbus to request service from the interrupt handler

located on its commander. Set the interrupt level to the same level as the

interrupt handler on that commander. The VMEbus interrupt level on which the

Option 01 daughter board generates interrupts is set by a rotary switch. Align the

desired switch position with the arrow on the module shield.

Valid VMEbus Interrupt Level Select switch settings are one through seven, with

setting one equivalent to level one, and so on. The level chosen should be the

same as the level set on the Option 01 interrupt handler, typically the module

commander. Setting the switch to zero or eight will disable the module inter-

rupts. Do not use switch settings nine through F.

Interrupts are used by the module to return VXIbus Protocol Events to the

module commander. Refer to the Operating Basics section for more information

on interrupts.

Installation

This section describes how to install the Option 01.

Tools Required

A Torxt T-10 driver set is required for proper installation.

Requirements and

Cautions

The Option 01 daughter board is installed on a C-size VXIbus instrument

module and therefore may be installed in any C- or D-size VXIbus mainframe

slot other than slot 0. To install the module in a D-size mainframe, consult the

operating manual for the mainframe. Refer to Configuration for information on

1–5

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Getting Started

selecting and setting the Logical Address switch of the module. This switch

defines the programming address of your module. To avoid confusion, it is

recommended that the slot number and the logical address be the same.

NOTE. Verify that the mainframe is able to provide adequate cooling and power

with this module installed. Refer to the mainframe Operating Manual for

instructions.

If the installed Option 01 is used in a Tektronix mainframe, all Option 01

cooling requirements are met.

Installation Procedure

Follow these steps to install the Option 01.

CAUTION. The Option 01 daughter board is a piece of electronic equipment and

therefore has some susceptibility to electrostatic damage (ESD). ESD precau-

tions must be taken whenever the module is handled.

1. Record the revision levels, serial numbers (located on the label on the top

shield of the host module and on a sticker on the Option 01), and switch

settings on the Installation Checklist.

2. Verify that the switches are set to the correct values. Refer to Configuration

for more information on setting switches.

3. Install the Option 01 on the SurePatht switching module (see Figure 1–3):

a. Align the sockets on the Option 01 with the connectors on the switching

module.

b. Gently seat the Option 01 into the connectors.

c. Use the screws provided to secure the Option 01 to the switching module

on the five standoffs.

1–6

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Getting Started

Connectors

Option 01

Switching Module

Connectors

Figure 1–3: Mounting the Option 01

1–7

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Getting Started

4. Make sure that the mainframe power is off.

5. Insert the module with the Option 01 installed into one of the instrument

slots of the mainframe (see Figure 1–4). Refer to the User Manual for the

switching module for detailed installation instructions.

Figure 1–4: Module Installation

1–8

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Getting Started

Installation Checklist

Installation parameters will vary depending on the mainframe being used. Be

sure to consult the mainframe operating manual before installing and operating

the module.

Revision Level: __________

Serial No.: __________

Mainframe Slot Number:__________

Switch Settings:__________

VXIbus Logical Address Switch:__________

Interrupt Level Select Switch:__________

Cable Installed (if any):__________

Performed by: _______________________

Date: _____________

1–9

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Getting Started

Functional Check

The Option 01 VXI Interface Module executes a self test at power-on, on

direction of a VXIbus hard or soft reset condition, or on command. The

power-on self test consists of an interface self test and an instrument self test.

The self test requested by command performs only the instrument self test. A

VXIbus hard reset occurs when another device, such as the VXIbus Resource

Manager, asserts the backplane line SYSRESET*. A VXIbus soft reset occurs

when another device, such as the Option 01 commander, sets the Reset bit in the

Option 01 Control register.

During power-on, or a hard or soft reset, the following actions take place:

1. The SYSFAIL* (VME system-failure) line is set active, indicating that the

module is executing a self test, and the Failed LED is lighted. For a soft

reset, SYSFAIL* is set. All Tektronix commanders will simultaneously set

SYSFAIL INHIBIT to prevent the resource manager from prematurely

reporting the failure of a card.

2. On completion of the interface self test, SYSFAIL* is un-asserted. If the test

fails, the SYSFAIL* line remains active. If the interface self test passed, the

SYSFAIL* line is released, and the module enters the VXIbus PASSED state

(ready for normal operation). If it failed, the module enters the VXIbus

FAILED state.

3. The instrument self test, as described in the *TST? command description is

then executed. This tests the Option 01 VXI Interface daughter board and

any relay modules under its control. If the self test fails, the module makes

an internal record of the failure(s) that occur.

The default condition of the Option 01 Module after the completion of power-on

self test is as follows:

All relays on modules controlled by the Option 01 (except VX4320

Modules) are set to the normally open position.

The VX4320 RF Multiplexer module contains eight 4-to-1 RF multiplexers.

After a power-on self test is performed by the Option 01, it closes channel 1

of each section of each VX4320 that it controls.

You can run the self test at any time during normal operation by using the *TST?

command. At the end of a self test initiated by this command, the module is

restored to its pre-test state.

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Getting Started

During a commanded self test:

1. SYSFAIL* is not asserted.

2. The module executes the same instrument self test as is executed upon power

on.

3. When the self test is completed, the modules controlled by the Option 01 are

restored to their pre-test state.

SYSFAIL* Operation

SYSFAIL* becomes active during power-on, hard or soft reset, or self test, or if

the module loses 5 V power. When the mainframe Resource Manager detects

SYSFAIL* set, it will attempt to inhibit the line. This causes the Option 01 VXI

Interface Module to deactivate SYSFAIL* except when +5 V power is lost on

the relay module on which it is installed.

1–11

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Operating Basics

The Option 01 VXI Interface Module is a VXIbus message-based instrument and

communicates using the VXIbus Word Serial Protocol. The module is pro-

grammed by issuing ASCII characters from the system controller to the Option

01 via the module VXIbus commander and the VXIbus mainframe backplane.

Refer to the manual for the VXIbus device that will be the Option 01 daughter

board’s commander for details on the operation of that device.

If the module commander is a Tektronix IEEE-488 Interface Module, refer to the

operating manual for the module and Appendix B: Examples in this manual for

information on how the system controller communicates with the commander

being used.

Functional Overview

The Option 01 VXI Interface Module is a printed circuit board that resides on a

C-size VXI module belonging to the Tektronix “SurePath” family of relay

modules. This family of relay modules includes the VX4320 RF Mux, VX4330

Scanner/Mux, VX4350 General Purpose Switch, and VX4380 Matrix modules.

Commands conforming to the 1994 SCPI and IEEE-488.2 specifications are sent

to the Option 01. The Option 01 parses these commands and controls the module

on which it is installed and additional SurePath modules installed in contiguous

slots to its right. VX4372 and VX4374 Scanner Slave modules can also be

controlled by the Option 01.

Power-on

The instrument runs its self test and is ready for programming five seconds after

power-on. The VXIbus Resource Manager can add an additional delay. The

Power LED of each relay module controlled by the Option 01 will be on. The

Failed LED on each of these modules will be off. The default condition of the

module after power-on is listed in the *RST command description. Self-test

failures are described in the *TST? command description.

The format and syntax for the command strings are described in the Command

Syntax section. A complete description of each command in alphabetical order is

in the Command Descriptions section.

2–1

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Operating Basics

Instrument I/O: VXIbus Basics

NOTE. If the user’s mainframe has other manufacturers’ computer boards

operating in the role of VXIbus foreign devices, the assertion of BERR* (as

defined by the VXIbus Specification) may cause operating problems on these

boards.

The Option 01 Module, when installed on a switching module, is a C-size single

slot VXIbus Message-Based Word Serial instrument. It uses the A16, D16 VME

interface available on the backplane P1 connector and does not require any A24

or A32 address space. The module is a D16 interrupter.

The Option 01 daughter board is neither a VXIbus commander nor a VMEbus

master; therefore it does not have a VXIbus Signal register. The Option 01 is a

VXIbus message-based servant.

The module supports the Normal Transfer Mode of the VXIbus using the Write

Ready, Read Ready, Data In Ready (DIR), and Data Out Ready (DOR) bits of

the module Response register.

A Normal Transfer Mode read of the Option 01 daughter board proceeds as

follows:

1. The commander reads the Option 01 Response register and checks if the

Write Ready and DOR bits are true. If they are, the commander proceeds to

the next step. If not, the commander continues to poll these bits until they

become true.

2. The commander writes the Byte Request command (hexadecimal 0DEFF) to

the Data Low register of the Option 01.

3. The commander reads the Option 01 Response register and checks if the

Read Ready and DOR bits are true. If they are, the commander proceeds to

the next step. If not, the commander continues to poll these bits until they

become true.

4. The commander reads the Option 01 Data Low register.

A Normal Transfer Mode write to the Option 01 daughter board proceeds as

follows:

1. The commander reads the Option 01 Response register and checks if the

Write Ready and DIR bits are true. If they are, the commander proceeds to

the next step. If not, the commander continues to poll the Write Ready and

DIR bits until they are true.

2. The commander writes the Byte Available command which contains the data

(hexadecimal 0BCXX or 0BDXX, depending on the End bit) to the Data

Low register of the Option 01.

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Operating Basics

The module also supports the Fast Handshake Mode during readback. In this

mode, the module is capable of transferring data at optimal backplane speed

without needing the commander to test any of the handshake bits. The Option 01

daughter board asserts BERR* to switch from Fast Handshake Mode to Normal

Transfer Mode, per VXI Specification. The Option 01 Read Ready, Write Ready,

DIR and DOR bits react properly, in case the commander does not support the

Fast Handshake Mode.

A Fast Handshake Transfer Mode read of the Option 01 daughter board proceeds

as follows:

1. The commander writes the Byte Request command (hexadecimal 0DEFF) to

the Option 01 Data Low register.

2. The commander reads the Option 01 Data Low register.

A Fast Handshake Transfer Mode write of the Option 01 daughter board

proceeds as follows:

The commander writes the Byte Available command which contains the data

(hexadecimal 0BCXX or 0BDXX, depending on the End bit) to the Data

Low register of the Option 01. The commander may immediately write

another Byte Available command without having to check the Response

The module has no registers beyond those defined for VXIbus message based

devices. All communications with the module are through the Data Low register,

the Response register, or the VXIbus interrupt cycle. Any attempt by another

module to read or write to any undefined location of the Option 01’s address

space may cause incorrect operation of the module.

As with all VXIbus devices, the Option 01 daughter board has registers located

within a 64 byte block in the A16 address space. The base address of the Option

01 device registers is determined by the device unique logical address and can be

calculated as follows:

Base Address = V₁₆* 40₁₆+ C000₁₆

where V is the logical address of the device as set by the Logical Address

switches.

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Operating Basics

Configuration Registers

Table 2–1 contains a list of the Option 01 Configuration registers and a complete

description of each register. The offset is relative to the module base address.

Table 2–1: Register Definitions

Address

(hexadecimal)

ID Register

Device Type

Status

Type

Value (Bits 15–0)

0000

1011 1111 1111 1101 (hexadecimal BFFD)

See Device Type definition below

Defined by state of interface

Not used

0002

0004

Control

0004

Offset

0006

Protocol

Response

Data High

Data Low

0008

1111 0111 1111 1111 (hexadecimal F7FF)

Defined by state of the interface

Not used

000A

000C

000E

Not fixed; command-dependent

000E

RO is Read Only

WO is Write Only

R is Read

W is Write

The Register Bit definitions are listed in Tables 2–2 and 2–3.

Table 2–2: Register Bit Definitions

Bit Definition

hexadecimal BFFD

hexadecimal F7FF

Protocol

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Operating Basics

The contents of the Device register of the Option 01 Module depends on the

model number of the relay module that it is installed on, as shown in Table 2–3.

Table 2–3: Device Register Bit Definitions

Relay Model No.

VX4320

Device Register Contents

hexadecimal FCBF

hexadecimal F6B5

hexadecimal F6A1

hexadecimal F683

VX4330

VX4350

VX4380

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Command Syntax

Command protocol and syntax for the Option 01 daughter board are as follows:

A command string consists of a string of ASCII-encoded characters

terminated by a <program message terminator>. The <program message

terminator> is optional white space, followed by any one of the following

command terminations:

a line feed <LF> or new line <NL> character (hexadecimal 0A, decimal

10)

the END bit set

the END bit with a line feed <LF> or new line <NL>

The command string is buffered until the terminator is encountered, at which

time the entire string is processed.

In addition to terminating a command, the semi-colon character directs the

SCPI command parser to interpret the next command with the assumption

that all characters up to and including the last colon in the previous

command have just been parsed. In the following example, the Option 01 is

installed on a VX4380 Module. Two additional VX4380 Modules are

installed in consecutive slots to the right of the first VX4380. Under these

conditions, the commands

route:open:all m1<LF>

route:open:all m2<LF>

route:open:all m3<LF>

cause all relays on all three VX4380 Modules to open. Note that each of

these commands is terminated by a line feed. An equivalent method of

sending these commands using the semi-colon character as a terminator is

route:open:all m1; all m2; all m3<LF>

After a line feed or END bit is used to terminate a command, the parser no

longer makes the assumption described above. Thus, after the command

route:open:all m1; all m2<LF>

is parsed, the command

all m2<LF>

is no longer valid.

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Command Syntax

In the next example, the Option 01 is installed on a VX4330 Module. Two

additional VX4330 Modules are installed in consecutive slots to the right of

the first VX4330. The commands

route:configure:join m1,(1:6)<LF>

route:configure:join m2,(1:2)<LF>

route:configure:join m3,(1:4)<LF>

connect the commons of sections 1 through 6 on the first VX4330, sections 1

and 2 on the second VX4330 and sections 1 through 4 on the third VX4330.

An equivalent way to send these commands using the semi-colon as a

terminator is

route:configure:join m1,(1:6); join m2,(1:2); join

m3(1:4)<LF>

Note that <LF> in these examples represents a single line feed character.

White space characters can be used to make a command string more

readable. These characters are ASCII-encoded bytes in the range hexadeci-

mal 00–09 and 0B–20 (decimal 0–9 and 11–32). This range includes the

ASCII control characters and the space, but excludes the line feed <NL>.

White space characters are ignored when legally encountered in a command

string. White space is allowed anywhere in a command string, except for the

following:

Within a program mnemonic ( for example RO UTE )

Around a colon (:) mnemonic separator (for example ROUTE: CLOSE

or ROUTE :CLOSE)

Between a mnemonic and a (?) (for example CLOSE ?)

Following an asterisk (*) (for example * STB?)

Within a number (for example 12 34)

Within a module name specified in a [ROUTe:]MODule[:DEFine]

command (for example ROUTE:MODULE:DEFINE RFM UX, 1).

At least one white space character is required between a command/query

header and its associated arguments. For example in the command

route:configure:join m1,(1:6)

the command header is the string “route:configure:join”. The arguments

associated with this command are the module name “m1” and the section list

“(1:6)”. At least one white space character must be sent before the first

argument.

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Command Syntax

In the query

route:close? (@m1(1:64))

the query header is the string “route:close?”. The argument associated with

this query is the channel list “(@m1(1:64))”. At least one white space

character must be sent before the channel list argument.

All characters in a command can be sent in either upper or lower case form.

Multiple data parameters passed by a command are separated by a comma

(,).

A question mark (?) following a command indicates that a response will be

returned. All responses from the module are terminated with a carriage return

<CR> and a line feed <LF> (hexadecimal 0A) character.

In the command descriptions, the following special characters are used.

Except for the colon (:), these characters are not part of the command and

should not be sent. If an optional field is omitted, the default for the

command is applied.

[ ]

Brackets indicate an optional field

A bar indicates a logical OR choice

A colon is used to separate command fields

Field indicator

< >

Syntax Example

Capital letters indicate the minimum required characters which need to be sent.

Lower case letters are optional. For example, the syntax of the trigger source

command is given as

TRIGger[:SEQuence]:SOURce BUS | HOLD | IMMediate | TTLTrg<n>

Each of the following is a valid form of this command:

trigger:sequence:source bus

trig:seq:sour hold

Trig:SOUR IMM

Trig:Sour TTLTRG1

Trig:Sour TTLT1

Trigger:Source Immediate

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Command Syntax

SCPI/IEEE 488.2

Command Elements

The definition of elements used in SCPI/IEEE 488.2 commands and command

descriptions is as follows:

<NR1> ASCII integer representation of a decimal number.

<NRf> ASCII integer, fixed point or floating point representation of a decimal

number.

<module_name> A user-defined ASCII string to be associated with the local bus

address of a relay module. <module_name> strings must start with a letter and

may consist of alphanumeric characters, underscores, and digits. The maximum

length of a <module_name> is 12 characters.

<channel_spec> One or more <NR1> ASCII strings separated by “!” characters

that specify a relay on a relay module. The format of a <channel_spec> field for

each of the SurePath relay modules is:

VX4320 RF Multiplexer: <NR1> ! <NR1>

The range of the first <NRf> field is 1 to 4. This field specifies a relay

within one of the sections of the VX4320. The range of the second <NRf>

field is 1 to 8. This field specifies a section of the VX4320. A one-dimen-

sional <channel_spec> may also be used to specify a channel on a VX4320

Module. The one-dimensional <channel_spec> is given by the formula:

( (section – 1 ) × 4 ) + relay.

where variables “section” and “relay” are section and relay numbers

specified in a two-dimensional <channel_spec>.

VX4330 Scanner/Multiplexer: <NR1> ! <NR1>

The first <NR1> field specifies a relay within the specified section. The

range of this <NR1> field depends on the current configuration of the section

of the VX4330 specified in the second <NR1> field. The range of the second

<NR1> field is 1 to 6. This field specifies a section of the VX4330.

1 – 10

1 – 20

1 – 40

4-wire

4-wire independent

2-wire

1-wire

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Command Syntax

VX4350 General Purpose Switching module: <NR1>

The range of this field is 1 to 64. It specifies one of 64 relays on the

VX4350.

VX4380 Matrix: <NR1> ! <NR1> ! <NR1>

The range of the first <NR1> field is 1 to 4. It specifies the row of a relay in

one of the sections of the VX4380. The range of the second <NR1> field is 1

to 16. It specifies the column of a relay in one of the sections of the VX4380.

The range of the third <NR1> field is 1 to 4. It specifies a section of the

VX4380. A one dimensional <channel_spec> may also be used to specify a

channel on a VX4380 Module. The one dimensional <channel_spec> is

given by the formula:

( (section – 1 ) × 64 ) + ( ( row – 1 ) × 16 ) + column

where variables “section” and “row” and “column” are section, row, and

column numbers specified in a three-dimensional <channel_spec>.

<channel_list> A list of channel numbers on one or more relay modules.

The limits on the channel numbers in a <channel_list> depend on the model

number of the relay module(s) specified in the <channel_list>. The syntax of a

<channel_list> is shown in the following diagram:

<channel_range>

<NR1>

<channel_list>

(

<module_name>

(

)

<channel_range>

A module_name is an ASCII string that has been associated with a relay module

in a ROUTe:MODule:DEFine command. A channel_range may consist of a

single <channel_spec> or a range of <channel_spec>s. A range of <chan-

nel_spec>s is indicated by two <channel_spec>s separated by a colon (:)

character. A <channel_spec> may have one, two or three dimensions depending

on the architecture of the relay module it applies to.

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Command Syntax

The following are examples of valid <channel_list>s for Tektronix VX4320,

VX4330, VX4350, VX4372, VX4374, and VX4380 relay modules. In these

examples it is assumed that the Option 01 is installed on a VX4320 Module. A

VX4330, VX4350, VX4372, VX4374, and VX4380 are installed in consecutive

slots to the right of the VX4320. The default module names for the VX4320,

VX4330, VX4350, VX4372, VX4374 and VX4380 in this example are m1, m2,

m3, m4, m5, and m6 respectively. These module names may be overridden by

specifying new module names with the [ROUTe:]MODule[DEFine] command. It

is also assumed in these examples that all sections on the VX4330 Module have

been configured as 10-to-1 4-wire scanners.

<channel_list>

(@m1(1!2))

Channels Specified

Channel number 1 of section 2 on the VX4320 Module.

(@m1(4!1,3!8))

Channel number 4 in section 1 and relay number 3 in section 8

of the VX4320 Module.

(@m1(4!1:4!8))

Channel number 4 in sections 1 through 8 on the VX4320

Module.

(@m1(4!1,4!2,4!3,4!4,

4!5,4!6,4!7,4!8))

Channel number 4 in sections 1 through 8 on the VX4320

Module.

(@m2(1!6))

Channel 1 in section 6 of the VX4330 Module.

(@m2(1!1:10!6))

All channels on the VX4330 Module in the following order: 1!1,

1!2, 1!3, 1!4, 1!5, 1!6, 2!1, 2!2, 2!3, 2!4, 2!5, 2!6, ... , 10!1,

10!2, 10!3, 10!4, 10!5, 10!6.

(@m2(1!3:10!3))

(@m3(1:64))

All 10 channels in section 3 of the VX4330.

All 64 channels on the VX4350

(@m3(1,2,3,10,11,

20:13))

Channels 1, 2, 3, 10, 11, and 20 through 13 on the VX4350.

(@m4(1!2))

(@m5(3!1))

(@m6(1!13!3))

Channel 1 in section 2 of the VX4372.

Channel 3 in section 1 of the VX4374.

The channel that connects row 1 to column 13 in section 3 of

the VX4380.

(@m6(65))

The channel that connects row 1 to column 1 in section 2 of

the VX4380.

(@m6(1!1!2))

(@m6(1:16))

Same as the previous example.

The channels that connect columns 1 through 16 to row 1 in

section 1 of the VX4380.

(@m6(1!1!1:1!16!1))

(@m6(1!1!1:2!3!4))

Same as the previous example.

Channels 1!1!1, 1!1!2, 1!1!3, 1!1!4, 1!2!1, 1!2!2, 1!2!3, 1!2!4,

1!3!1, 1!3!2, 1!3!3, 1!3!4, 2!1!1, 2!1!2, 2!1!3, 2!1!4, 2!2!1,

2!2!2, 2!2!3, 2!2!4, 2!3!1, 2!3!2, 2!3!3, 2!3!4 on the VX4380

Module.

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Command Syntax

As the <channel_list> syntax diagram shows, channels on more than one relay

module may be specified in a <channel_list>. The next example specifies

channels on three different relay modules.

<channel_list>

Channels Specified

(@m1(1!1), m2(4!6),

m6(3!13!2))

Channel 1 of section 1 on the VX4320, Channel 4 of section 6

of the VX4330, and the channel on the VX4380 that connects

row 3 to column 13 in section 2.

As mentioned above, the module names used in <channel_list>s may be

specified with a [ROUTe:]MODule[:DEFine] command. The command

route:module:Define rfmux, 1

changes the module name assigned to the VX4320 to “rfmux”. The following

<channel_list> can then be used to specify channels on the VX4320.

(@rfmux(3!1,2!2))

specifies channel 3 in section 1 and channel 2 in section 2 of the VX4320.

The order in which channels are specified is important in the [ROUTe:] CLOSE?

<channel_list> and [ROUTe:]OPEN? <channel_list> queries. The states of the

channels are returned in the same order that the channels are specified in the

<channel_list>.

The order in which channels are specified is also important in the [ROUTe:]

SCAN <channel_list> command. This determines the order in which the relays

will be closed each time a trigger event is detected.

The order in which channels are specified in a <channel_list> is important in the

[ROUTe:]CLOSe <channel_list> command when channels in the same section of

a VX4320 or a VX4330 are specified. A VX4320 can close only one channel in a

section. If a [ROUTe:]CLOSE <channel_list> command specifies more than one

relay in a section of a VX4320, the last channel in the <channel_list> will be

closed.

For example, the command

close (@m2(1!1,2!1))

will close channel 2 of section 1 of the VX4320.

A VX4330 can close only one channel in a group of joined sections that have

been specified in a [ROUTe:]CLOSe:MODe SCAN,<module_name>,<sec-

tion_list> command. If more than one channel in such a group of sections is

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Command Syntax

specified in a [ROUTe:]CLOSe <channel_list> command, the last channel

specified will be closed. For example, the commands

route:configure:join m2,(1:6)

route:close:mode scan,m2,(1:6)

join the commons of all six sections of the VX4330 Module and set the mode of

the [ROUTe]:CLOSE <channel_list> to scan mode for all six sections of the

VX4330.

The command

route:close (@m2(1!1,1!6))

will then result in channel 1 of section 6 being closed and all other channels on

the module being opened.

output queue The Output queue of the Option 01 VXI Interface is used to return

replies to queries received by the interface. Bit 4 (the MAV bit) of the Status

Byte register is set to indicate that this queue is not empty. The DOR bit in the

VXI Response register is also set to indicate that this queue is not empty. The

commander of the Option 01 VXI Interface monitors the DOR bit to determine

when it may read a message from the Output queue.

<section_list> One or more <nr1> fields separated by comma (,) or colon (:)

characters and enclosed in left and right parentheses. A <section_list> is used to

specify the sections of a relay module to be acted upon by a [ROUTe:]CONFig-

ure or [ROUTe:]CLOSe:MODE command. The following are examples of valid

<section_list>s.

For commands directed to a VX4330 which has six scanner sections:

<section_list>

(1:6)

Sections Specified

Sections 1 through 6

Sections 1, 2 and 3

(1,2,3)

(1:3,5:6)

(1:3,5,6)

(3)

Sections 1 through 3 and 5 and 6

Same as previous example

Section 3

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Command Syntax

For commands directed to a VX4372 or VX4374 which has two scanner

sections:

<section_list>

(1)

Sections Specified

Section 1

(1,2)

Sections 1 and 2

(1:2)

error/event queue When the command parser detects a syntax error or data range

error, it places an error message describing the error in the Error/Event queue.

Bit 2 of the Status Byte Register is set to indicate that this queue is not empty.

Bit 5 of the Standard Event Status Register (the Command Error bit) is set if the

parser detects a syntax error. Bit 4 of the Standard Event Status register (the

Execution Error bit) is set if the parser detects a numeric argument that is out of

range. When a SYSTem:ERRor? query is received, an error message is dequeued

from the Error/Event queue and placed in the Output queue.

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Functional Command Groups

This section lists the Option 01 system and module commands.

System Commands

The following low-level commands are typically sent by the module’s command-

er, and are transparent to the user of the module. (An exception is the Read STB

command, which is sent whenever a Serial Poll on an IEEE-488 system is

performed.) Most commanders or Slot 0 devices have specific ASCII commands

that cause the commander to send one of these low-level commands to a

specified instrument. Refer to the operating manual of the commander or Slot 0

device for information on these commands.

Command

Effect

Begin Normal Operation

Byte Available

The module begins operation if it has not already done so.

Transfers module commands to this module.

Byte Request

Requests the module to return a byte of data from the output

queue.

Clear

The module clears its VXIbus interface and any pending

commands. Current module operations are unaffected.

Clear Lock

Read Protocol

Read STB

Set Lock

Clears the Lock bit of the Response register.

The module returns its protocol to its commander.

The module returns its VXI status byte to its commander.

Set the Lock bit of the Response register.

Trigger

Close the next relay in a scan list that has been defined by a

ROUTe:SCAN <channel_list> command. A VXI Trigger

command is enabled as a trigger source by a ROUTe:SE-

Quence:SOURce BUS command.

Module Commands

A summary of the Option 01-specific and IEEE-488.2 Common Commands is

listed in Tables 3–1 and 3–2 below. The next section, Command Descriptions,

includes detailed descriptions of each command. Appendix B: Examples shows

examples of command usage.

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Syntax and Commands

Table 3–1: Summary of Option 01-Specific SCPI Commands

Subsystem Command

ABORt

Functions Controlled

Place initiated scan in the idle state

Close specified relays; DWELl

CONFigure

ID?

Configuration: DISJoin, JOIN

Return model numbers of modules controlled by the Option 01

INITiate

Place trigger subsystem in armed state: IMMediate,

CONTinuous

MODule

MODE

OPEN

Module name functions: DEFine, CATalog?, DELete

VX4330 only; set mode to scan or mux

Open specified relays: ALL, DWELl

OUTPut

PFAil

Enable or disable selected VXI TTL trigger

Specify state of latching relays on powerfail

Define a list of relay closures to scan through

Status register functions: OPERation, QUESstionable

System-level functions: ERRor?, PRESet, VERSion?

Scan list functions: COUNt, DELay, IMMediate, SOURce

SCAN

STATus

SYSTem

TRIGger

Table 3–2: Summary of IEEE-488.2 Common Commands

Command/Syntax

Description

Clear Status

*CLS

Clears the SCPI and IEEE 488.2 event registers and

the SCPI error/event queue, and the output queue.

Standard Event Status Enable

*ESE <NRf>

Sets the contents of the Standard Event Status Enable

Standard Event Status Enable Query

*ESE?

Returns the current value of the Standard Event

Status Enable register in <nr1> format.

Standard Event Status Register Query Returns the current value of the Standard Event

*ESR?

Status register in <nr1> format, then set the contents

of this register to 0.

Identification Query

*IDN?

Returns an ASCII string in the output queue which

identifies the board.

Operation Complete

*OPC

Sets bit 0 (the Operation Complete bit) of the

Standard Event Status register when all pending

device operations have been completed.

Operation Complete Query

*OPC?

Places the ASCII character 1 in the output queue

when all pending device operations have been

completed.

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Syntax and Commands

Table 3–2: Summary of IEEE-488.2 Common Commands (Cont.)

Command/Syntax

Description

Reset*

*RST

The Option 01 VXI interface is placed in its power-up

state with some exceptions.

Service Request Enable

*SRE <NRf>

Sets the contents of the Service Request Enable

Service Request Enable Query

*SRE?

Returns the current value of the Service Request

Enable register in <nr1> format.

Read Status Byte Query

*STB?

Returns the current value of the Status Byte register in

<nr1> format.

Trigger

*TRG

Equivalent to a VXI Trigger command.

Self-Test Query

*TST?

Performs a self test of the Option 01 VXI Interface

daughter board and any relay modules under its

control. Place a “0” or “1” into the output queue to

indicate whether the self test passed or failed.

Wait-to-Continue

*WAI

Does not execute any further commands or queries

until all pending operations have been completed.

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Command Descriptions

This section lists the Option 01-specific SCPI commands and queries in

alphabetic order. The IEEE-488.2 Common Commands are listed in the next

section. A summary listing of the SCPI command set for the Option 01 is as

follows:

ABORt

[ROUTe:]CLOSe <channel_list>

[ROUTe:]CLOSe:DWELl <module_name>,<nrf>

[ROUTe:]CLOSe:MODE <mode>,<module_name>,<section_list>

[ROUTe:]CONFigure <configuration>,<module_name>,<section_list>

[ROUTe:]CONFigure:DISJoin <module_name>

[ROUTe:]CONFigure:JOIN <module_name>,<section_list>

[ROUTe:]ID?

INITiate:CONTinuous

INITiate[:IMMediate]

[ROUTe:]MODule[:DEFine] <module_name>,<nrf>

[ROUTe:]MODule:CATalog?

[ROUTe:]MODule:DELete[:NAME] <module_name>

[ROUTe:]MODule:DELete:ALL

[ROUTe:]OPEN <channel_list>

[ROUTe:]OPEN:ALL [module_name]

[ROUTe:]OPEN:DWELl <module_name>,<nrf>

OUTPut:TTLTrg<n>[:STATe] ON | OFF | <nrf>

[ROUTe:]PFAil <action_at_powerfail>

[ROUTe:]SCAN <channel_list>

STATus:OPERation:CONDition?

STATus:OPERation:ENABle

STATus:OPERation[:EVENt?]

STATus:QUEStionable:CONDition?

STATus:QUEStionable:ENABle

STATus:QUEStionable[:EVENt?]

SYSTem:ERRor?

SYSTem:PRESet

SYSTem:VERSion?

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Command Descriptions

TRIGger[:SEQuence]:COUNt

TRIGger[:SEQuence]:DELay

TRIGger[:SEQuence][:IMMediate]

TRIGger[:SEQuence]:SOURce BUS | HOLD | IMMediate | TTLTrg<n>

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Command Descriptions

ABORt

Command Syntax

Query Syntax

*RST Value

Limits

ABORt

N/A

Related Commands

ROUTe:SCAN

INITiate[:IMMediate]

TRIGger[:SEQuence]:SOURce

TRIGger[:SEQuence]:IMMediate

TRIGger[:SEQuence]:COUNt

TRIGger[:SEQuence]:DELay

Description

Examples

This command places an initiated scan sequence in the idle state.

The following example defines a scan sequence of 10 relays. The sequence is

aborted after the third relay in the sequence is closed. In this example, module

names m1 and m2 refer to VX4380 Modules. After a scan sequence is aborted,

triggers are no longer accepted by the Option 01 until another INITiate [:IM-

Mediate] command is received.

Command

Response

route:scan

(@m1(1:5),m2(60:64))

Define a scan sequence.

trigger:sequence:

source hold

This command disables the following trigger sources: VXI TTL

triggers, VXI Trigger commands, *TRG command, Immediate

triggers. The TRIGger[:SEQuence][:IMMediate] command,

however, overrides this command. It triggers the module and

skips the delay specified in a previously issued TRIGger

[:SEQuence]:DELay command.

initiate:immediate

Initiate the scan sequence.

trig

Close the first relay in the sequence.

Open the first relay and close the second relay in the

sequence.

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Command Descriptions

Command

Response

trig

Open the second relay and close the third relay in the se-

quence.

abort

Abort the scan sequence.

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Command Descriptions

Command Syntax

[ROUTe:]CLOSe<channel_list>

Query Syntax

Query Response

*RST Value

[ROUTe:]CLOSe?<channel_list>

Indicates which relays are closed.

All relays on all modules are set to the open position.

Limits

The limits on the relay numbers in the <channel_list> portion of this command

depend on the model number of the relay module(s) specified in the <chan-

nel_list>. The syntax of a <channel_list> is described by the following diagram:

<channel_range>

<NR1>

<channel_list>

(

<module_name>

(

)

<channel_range>

A module_name is an ASCII string that has been associated with a relay module

in a ROUTe:MODule:DEFine command. A channel_range may consist of a

single relay number or a range of relay numbers. A range of relay numbers is

indicated by two relay numbers separated by a “:” character.

A relay number may have one, two, or three dimensions depending on the

architecture of the relay module containing the relay. For example, the VX4350

contains 64 SPDT relays. Only one-dimensional relay numbers are supported for

this module. The VX4380 Module contains four 4×16 2-wire matrices. Three-

dimensional channel numbers are supported for this module. The first specifies

the row, the second specifies the column, and the third specifies the matrix

containing the relay. Multi-dimensional relay numbers are represented by

integers separated by “!” characters. See the user manuals for the VX4320,

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Command Descriptions

VX4330, VX4350, and VX4380 for more information on the format of relay

numbers for these modules.

Related Commands

[ROUTe:]OPEN <channel_list>

[ROUTe:]MODule:DEFine

OUTPut:TTLTrg<n>[:STATe]

Description

Examples

This command closes the relays specified in the <channel_list> portion of this

command.

In these examples the Option 01 is installed on a VX4350 Module. A VX4380

and VX4320 are installed in consecutive slots to the right of the slot containing

the VX4350. The default module names for the VX4350, VX4380 and VX4320

in this configuration are m1, m2, and m3 respectively. These module names may

be altered with the [ROUTe:]MODule:DEFine command.

Command

Response

route:close (@m3(4!8)) Close relay 4 in section 8 of the VX4320 RF Mux Module.

route:close

(@m1(1,2,3,10:64))

Close relays 1,2,3 and 10 through 64 on the VX4350 General

Purpose Switch Module.

route:close

(@m2(3!16!4))

Close row 3, column 16 of section 4 of the VX4380 Matrix

Module.

route:close

(@m3(2!1:2!8))

Close relay 2 in sections 1 through 8 on the VX4320 RF Mux

Module.

route:close

(@m3(4!8),m2(3!16!4))

Combined effect of examples 1 and 3.

route:module:define

rfmux,3

route:close

Close channel 3 of section 2 on the VX4320 Module after

redefining its module name to “rfmux”.

(@rfmux(3!2))

route:close

(@m2(1!1!1,4!6!2))

Close the following relays on the VX4380 Matrix Module:

Row

Column Section

route:close?

(@m1(1,2,3,4))

1 1 0 0

This response indicates that relays 1 and 2 on the VX4350 are

closed and relays 3 and 4 on this module are open.

route:close?

(@rfmux(3!2))

This response indicates that channel 3 of section 2 of the

VX4320 is closed. Note that a route:module:define rfmux,3

command has been received prior to this query.

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Command Descriptions

Command Syntax

[ROUTe:]CLOSe

:DWELl<module_name>,<nrf>

Query Syntax

*RST Value

Limits

N/A

The close dwell time of all modules is set to 0 seconds.

The value of the time specified in this command must be between 0 and 6.5535

seconds.

Related Commands

[ROUTE:]CLOSe

[ROUTe:]SCAN

OUTPut:TTLTrg<n>[:STATE]

Description

Examples

Set the time to wait after closing a relay before proceeding and pulsing any

enabled VXI TTL trigger signals.

In this example the Option 01 is installed on a VX4330 Module.

Command

Response

output:ttltrg1:state

Enable VXI TTL trigger 1.

route:close:dwell

m1,.25

Set the close dwell time for the VX4330 to 0.25 seconds.

Set the open dwell time for the VX4330 to 0.5 seconds.

route:open:dwell

m1,0.5

route:close

(@m1(1!3:10!3))

Close relays 1 through 10 in section 3 of the VX4330, wait 0.25

seconds, then pulse VXI TTL trigger 1.

route:scan

(@m1(1!6:20!6))

Define a scan list consisting of relays 1 through 20 in section 6

of the VX4330.

trigger:Sequence:

source ttltrg2

Define VXI TTL trigger 2 as the trigger source for the defined

scan list.

trigger:sequence:

delay 1

Set the trigger delay time to 1 second.

initiate:immediate

Initiate the scan sequence.

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Command Descriptions

After this sequence, each time the VXI TTL trigger 2 is pulsed low, the

following sequence of events occurs:

1. One second delay. This is the delay specified in the trigger:Sequence:delay

command.

2. The current relay in the scan list is opened.

3. 0.5 second delay. This is the delay specified in the route:open:dwell

command.

4. Close the next relay in the scan list.

5. 0.25 second delay. This is the delay specified in the route:close:dwell

command.

6. Pulse VXI TTL trigger 1 low for 3 msec.

Command Syntax

Query Syntax

*RST Value

[ROUTe:]CLOSe:MODE <mode>,<module_name>,<section_list>

N/A

All sections of all VX4330 Modules are set to operate in the mux mode. In this

mode one or more channels in a section may be closed at the same time.

Limits

This command applies only to the VX4330 Module. The section numbers in the

<section_list> argument must be between 1 and 6.

Related Commands

[ROUTe:]CONFigure:JOIN

[ROUTe:]CONFigure:DISJoin

[ROUTE:]CONFigure

Description

This command is supported only for VX4330 Modules. It sets the mode of

operation of sections on a VX4330 to scan or mux. When this command is

received, all relays in the sections specified in the <section_list> argument are

opened. In the mux mode, one or more relays in a section may be closed at the

same time. When a relay is closed in a section that has been set to scan mode, all

relays in that section are opened before the relay is closed. If several sections are

set to operate in scan mode and the commons of these sections are joined (see the

[ROUTe:]CONFigure:JOIN command) then when a relay is closed in any of the

sections, all relays in all of the sections are opened first.

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Command Descriptions

Examples

In these examples the Option 01 is installed on a VX4330 Module. Two addi-

tional VX4330 Modules are installed in consecutive slots to the right of this

module.

Command

Response

route:mode mux

m1,(1:6)

Set all six sections of the first VX4330 to mux mode.

route:conf

twire,m1,(1:6)

Configure all six sections of the first VX4330 to 20-to-1 2-wire

scanner/mux.

route:close mode

scan,m3,(1:3)

Close the first 10 relays in section one of the first VX4330.

Set sections 1 through 3 on the third VX4330 to scan mode.

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Command Descriptions

CONFigure

Command Syntax

Query Syntax

*RST Value

[ROUTe:]CONFigure <configuration>,<module_name>,<section_list>

N/A

Limits

This command is valid only for VX4330 Scanner Modules. The section numbers

specified in the <section_list> portion of this command must be between 1 and 6

for this command.

Related Commands

Description

[ROUTe:]CLOSe

[ROUTe:]CLOSe:MODE

[ROUTe:]OPEN

Each section of a VX4330 Module may be configured as a 40-to-1 1-wire

scanner, or as a 20-to-1 2-wire scanner/mux, or as a 10-to-1 4-wire scanner/mux.

Also, each section may be configured as a 10-to-1 4-wire scanner with indepen-

dent control of the upper and lower halves of the 4-wire common. The <configu-

ration> portion of this command indicates which of these configurations is

selected according to the following table.

OWIRE

Configuration

40-to-1 1-wire scanner

20-to-1 2-wire scanner/mux

10-to-1 4-wire scanner/mux

TWIRE

FWIRE

FWIRI

10-to-1 4-wire scanner/mux with independent control of the

upper and lower halves of the 4-wire common.

The <module_name> argument of the command indicates which module the

command is directed to. The specified <module_name> is associated with a relay

module with a [ROUTe:]MODule:DEFine command.

The <section_list> argument indicates which sections of the selected module are

to be configured. All relays in the section(s) specified in this list are opened

when the [ROUTe:]CONFigure command is received.

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Command Descriptions

Examples

In these examples the Option 01 is installed on a VX4330 Module. Two addi-

tional VX4330 Modules are installed in consecutive slots to the right of this

module.

Command

Response

route:configure

fwire,m1,(1:6)

Configure all six sections of the first VX4330 as 10-to-1 4-wire

scanners.

route:mode

scan,m1,(1:3)

Set the mode of operation of sections 1, 2, and 3 of the first

VX4330 to scan. In this mode, only one channel in a section is

closed at a time.

route:mode

mux,m1,(4:6)

Set the mode of operation of sections 4, 5 and 6 of the first

VX4330 to mux. In this mode one or more channels in a

section may be closed at the same time.

rout:conf owire,m3,(1) Configure section 1 of the third VX4330 as a 40-to-1 1-wire

scanner.

rout:conf

twire,m2,(2,3)

Configure sections 2 and 3 of the second VX4330 as 20-to-1

2-wire scanners.

route:configure

fwiri,m3,(1:6)

Configure all six sections of the third VX4330 as 10-to-1 4-wire

scanners with independent control of upper and lower

commons.

route:close (@m3(1!1)) Connect the lower half of channel 1, section 1, to the lower half

of the 4-wire common. In this example, section 1 is assumed to

be configured as a 10-to-1 4-wire scanner with independent

control of the upper and lower halves of the 4-wire common.

route:close

(@m3(20!1))

Connect the upper half of the 10th channel of section 1 to the

upper half of the 4-wire common. In this example, section 1 is

assumed to be configured as a 10-to-1 4-wire scanner with

independent control of the upper and lower halves of the 4-wire

common.

Note that in OWIRE configuration, unintended connections can be made

between the inputs that are paired with the selected MUX inputs. When selecting

even numbered relays for multiplexing, contact pairs for odd number relays are

also connected together.

In OWIRE configuration, the inputs are switched in pairs onto the two–wire bus

of the relay section. Input 1 (relay 1a_Lo) and input 2 (relay 1a_Hi) will be

switched at the same time, input 3 (relay 1b_Lo) and input 4 (relay 1b_Hi) will

be switched at the same time, etc. The odd numbered inputs connect to the

two–wire Lo bus and the even numbered inputs connect to the two–wire Hi bus.

The Scanner/MUX one–wire output is switched to either the odd relay (Lo) or

even relay (Hi) bus according to the last one–wire channel closed in the given

section, or any section to which it is joined.

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Command Descriptions

Scan mode: any one of the inputs can be individually connected to the

one-wire output without any concern.

Mux mode: any group of even inputs or any group of odd inputs can be

connected to the one-wire output at the same time.

OWIRE configuration: each section of the VX4330 is a 1×20 Hi wire MUX

and a 1×20 Lo wire MUX, with switching between Hi and Low performed

automatically.

The VX4330 can not function as a 1×40 MUX.

Examples

In these examples the Option 01 is installed on a VX4330 Module.

Command

Response

route:configure:join m1, (5:6)

Connect the 4 commons of sections 5 and 6 on the VX4330.

This joins the following pins:

Com_5a_Lo to Com_6a_Lo

Com_5a_Hi to Com_6a_Hi

Com_5b_Lo to Com_6b_Lo

Com_5b_Hi to Com_6b_Hi

route:configure: owire,m1,

(5:6)

Configure sections 5 and 6 of the VX4330 as 40-to-1 1-wire

scanners. This closes the 2-wire relays in sections 5 and 6

joining all of the Com_xx_Lo pins together into one Lo group,

and all of the Com_xx_Hi pins into one Hi group.

route:mode mux,m1, (5:6)

route:close (@m1 (1:5))

Set the mode of operation of sections 5 and 6 of the VX4330 to

mux.

The In_01_Lo pin of section 5 (1:5) is connected to the Lo

(odd) group. The inadvertent connection of In_02_Hi is made to

the Hi (even) group.

route:close (@m1 (4:6))

Note the unexpected result here because we attempted to

connect both even and odd inputs. The 1Wire_5a and

1Wire_6a pins are now connected to the Hi (even) group to

connect (4:6). But (2:5) is now connected instead of the

original (1:5).

Command Syntax

[ROUTe:]CONFigure

:DISJoin <module_name>

Query Syntax

*RST Value

N/A

All sections on all scanner modules are disjoined.

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Command Descriptions

Limits

N/A

Related Commands

[ROUTe:]CONFigure:JOIN

[ROUTE:]CONFigure

[ROUTe:]CLOSe:MODE

Description

Examples

Disconnect the commons of all sections of a scanner module. This command is

supported for VX4330, VX4372, and VX4374 Modules.

In these examples the Option 01 is installed on a VX4330 Module. Two addi-

tional VX4330 Modules are installed in consecutive slots to the right of this

module. A VX4374 is installed in the slot to the right of the third VX4330.

Command

Response

route:configure:

disjoin m1

Disconnect the commons of the first VX4330.

rout:conf:disj m4

Disconnect the commons of the two sections of the VX4374.

Command Syntax

[ROUTe:]CONFigure

:JOIN <module_name>,<section_list>

Query Syntax

*RST Value

Limits

N/A

All sections on all scanner modules are disjoined.

This command is supported for VX4330, VX4374, and VX4372 Modules. The

section numbers specified in the <section_list> argument must be between 1 and

6 for VX4330 modules. Section numbers 1 and 2 are valid for VX4374 and

VX4372 Modules.

Related Commands

Description

[ROUTe:]CONFigure:DISJoin,

[ROUTE:]CONFigure,

[ROUTe:]MODE

This command connects the commons of adjacent sections on scanner modules.

On VX4330 modules, if a section that is configured as a 4-wire scanner is joined

to a section that is configured as a 1-wire or 2-wire scanner, only the lower half

of the 4-wire scan common is connected. If a 4-wire section is joined to another

4-wire section, both halves of the 4-wire scan common are joined. Also for the

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Command Descriptions

VX4330, if two or more sections that are set to scan mode are joined, then when

a [ROUTe:]CLOSe command closes a relay in one of these sections, all relays in

the sections are opened before the specified relay is closed.

Examples

In these examples the Option 01 is installed on a VX4330 Module. Two addi-

tional VX4330 Modules are installed in consecutive slots to the right of this

module. A VX4374 is installed in the slot to the right of the third VX4330.

Command

Response

route:configure:join

m1,(1:3)

Connect the commons of sections 1, 2, and 3 on the first

VX4330.

rout:conf:join

m4,(1:2)

Connect the commons of the two sections of the VX4374.

route:close:mode

scan,m2,(1:4)

Set the mode of operation of sections 1 through 4 on the

second VX4330 to scan mode. In this mode, only one relay is a

section is closed at a time.

route:conf

twire,m2,(1:4)

Configure sections 1 through 4 on the second VX4330 as

20-to-1 2-wire scanners.

route:conf:join

m2,(1:4)

Connect the commons of sections 1 through 4 on the second

VX4330. Since these sections have been set to operate in the

scan mode, and have been configured as 20-to-1 2-wire

scanners, these sections now comprise a single 80-to-1 2-wire

scanner.

route:close

(@m2(10!1))

Close channel 10 of section 1 of the second VX4330.

route:close (@m2(2!4)) Close channel 2 of section 4 of the second VX4330. Since the

first four sections of this module are joined and are set to

operate in the scan mode, all relays in sections 1 through 4 of

this module are opened before this relay is closed.

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Command Descriptions

ID?

Command Syntax

*RST Value

[ROUTe:]ID?

N/A

Limits

N/A

Related Commands

Description

[ROUTe:]MODule:CATalog?

This query returns a list of the model numbers of the modules controlled by the

Option 01. The first model number returned is that of the module that the Option

01 is installed on. Subsequent model numbers are those of modules in consecu-

tive slots to the right of the first module.

Examples

In these examples the Option 01 is installed on a VX4350 Module. A VX4380,

VX4330, and VX4320 are installed in consecutive slots to the right of the slot

containing the VX4350. The default module names for the VX4350, VX4380,

VX4330 and VX4320 in this configuration are m1, m2, m3, and m4 respectively.

These module names may be altered with the [ROUTe:]MODule:DEFine com-

mand.

Command

Response

route:id?

VX4350, VX4380, VX4330, VX4320

“M1”, “M2”, “M3”, “M4”

route:module:Catalog?

route:close (@m1(1))

route:open:all m2

Close relay number 1 on the VX4350.

Open all relays on the VX4380.

route:close (@m3(1!6)) Close relay number 1 in section 6 of the VX4330

route:close

(@m4(3!1:3!8))

Close relay number 3 in all eight sections of the VX4320.

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Command Descriptions

INITiate

Command Syntax

INITiate

[:IMMediate]

Query Syntax

Query Response

*RST Value

N/A

The trigger subsystem is in the idle state.

Related Commands

ABORt

ROUTe:SCAN

TRIGger[:SEQuence][:SOURce]

TRIGger[:SEQuence][:IMMediate]

TRIGger[:SEQuence][:COUNt]

TRIGger[:SEQuence][:DELay]

Description

Examples

This command places the trigger subsystem in the armed state. In this state, a

trigger event enabled by the TRIGger[:SEQuence]:SOURce command closes the

next relay in a scan sequence, after opening the previous relay in the sequence.

After a sufficient number of triggers have been received to cycle through a scan

list the number of times specified in a TRIGger:[SEQuence] :COUNt command,

the trigger subsystem is placed in the idle state. In this state, triggers are ignored.

Command

Response

route:scan

(@m1(1,2),m2(60))

Define a scan sequence consisting of relays 1 and 2 on relay

module m1 and relay 60 on module m2.

trigger:sequence:count Define the number of times to sequence through the scan list

before setting the state of the trigger subsystem back to the

idle state.

trigger:sequence:

source hold

This command disables the following trigger sources: VXI TTL

triggers, VXI Trigger commands, *TRG command, and

Immediate triggers. The TRIGger[:SEQuence][:IMMediate]

command, however, overrides this command. It triggers the

module and skips the delay specified in a previously issued

TRIGger[:SEQuence]:DELay command.

initiate:immediate

trig

Initiate the scan sequence.

Close the first relay in the sequence.

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Command Descriptions

Command

Response

trig

Open the first relay and close the second relay in the

sequence.

trig

Open the second relay and close the third relay in the

sequence.

Open the third relay in the sequence. Place the trigger

subsystem in the idle state.

Command Syntax

INITiate

:CONTinuous

Query Syntax

Query Response

*RST Value

N/A

The trigger subsystem is placed in the IDLE state.

Related Commands

ABORt

[ROUTe:]SCAN

TRIGger[:SEQuence]:SOURce

TRIGger[:SEQuence]:IMMediate

TRIGger[:SEQuence]:DELay

Description

Examples

If a scan list has been defined by a [ROUTe:]SCAN command, this command

places the trigger subsystem in the armed state. In this state, a trigger event

enabled by the TRIGger[:SEQuence]:SOURce command opens the currently

closed channel in a scan list and closes the next channel in the list. Triggers

continue to be recognized until an ABORt command is received, which returns

the trigger subsystem to the IDLE state.

In this example, it is assumed that the Option 01 daughter board is installed on a

VX4330 Module and that the default module name “m1” is in effect.

Command

Response

conf twire,m1,(1)

scan (@m1(1!1:20!1))

Set the configure section 1 of the VX4330 to 20-to-1 twire.

Define a scan list consisting of channels 1 through 20 in

section on of the VX4330 Module.

trigger:Sequence:count Set the number of times to sequence through a scan list (when

an INITiate[:IMMediate] command is received) to 2.

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Command Descriptions

Command

Response

trigger:sequence:

source hold

Disable all trigger sources.

initiate:continuous

trigger:seq:imm

Place the trigger subsystem in the arm state.

Override the hold placed on triggers. Close channel 1 in

section 1 of the VX4330.

trigger:seq:imm

Override the hold placed on triggers. Open channel 1 in section

1, then close channel 2 in section 1 of the VX4330.

trigger:seq:sour imm

Remove the hold placed on triggers. Set the trigger source to

immediate. This causes the sequencing of the scan list

indefinitely or until an ABORt command is received.

ABOR

Return the trigger subsystem to the idle state. Open the

currently closed relay in the scan list.

initiate:immediate

Place the trigger subsystem in the arm state, sequence through

the scan list twice, then return the trigger subsystem to the idle

state.

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Command Descriptions

MODule

Command Syntax

[ROUTe:]MODule

[:DEFine] <module_name>,<nrf>

Query Syntax

[ROUTe:]MODule

[:DEFine]? <module_name>

Query Response

*RST Value

See examples.

Default module names are assigned as follows:

The module that has a Option 01 VXI Interface daughter board installed is

assigned module name “M1”.

Modules without the Option 01 VXI Interface daughter board in consecutive

slots to the right of module “M1” are assigned module names “M2”, “M3”, ...,

“M11”.

Limits

A module name may consist of up to 12 characters. The name must start with a

letter and may consist of alphanumeric characters, underscores, and digits.

Related Commands

[ROUTe]:MODule:DELete[:NAME]

[ROUTe]:MODule:DELete:ALL

[ROUTe:]MODule:CATalog?

Description

Examples

This command assigns a module name to a relay switching module. This name is

used to identify the module in channel lists in [ROUTe:]OPEN,

[ROUTe:]CLOSe, and [ROUTe:]SCAN commands.

In these examples the Option 01 is installed on a VX4350 Module. A VX4380

and VX4330 are installed in consecutive slots to the right of the slot containing

the VX4350.

Command

Response

route:module:define

gp_switch,1

Assign module name “gp_switch” to the VX4350.

route:close

(@gp_switch(1:64))

Close all 64 relays on the VX4350.

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Command Descriptions

Command

Response

route:module:define

matrix,2

Assign module name “matrix” to the VX4380.

route:close (@matrix

(4!16!3))

Close the relay at row 4 column 16 in section 3 of the VX4380.

route:module:define?

gp_switch

Command Syntax

[ROUTe:]MODule

:CATalog?

*RST Value

Limits

N/A

Related Commands

[ROUTe]:MODule:DEFine[:NAME]

[ROUTe]:MODule:DELete[:NAME],

[ROUTe]:MODule:DELete:ALL

Description

Examples

This command returns a list of defined module names.

In these examples the Option 01 is installed on a VX4350 Module. A VX4380

and VX4330 are installed in consecutive slots to the right of the slot containing

the VX4350.

Command

Response

route:module:catalog?

“M1”, “M2”, “M3”

route:module:define

matrix_1,2

Assign module name “matrix_1” to the VX4380.

route:module:catalog?

“M1”, “MATRIX_1”, “M3”

route:module:define?

matrix_1

route:module:delete

matrix_1

Delete module name “matrix_1”

“M1”, “M3”

route:module:catalog?

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Command Descriptions

Command Syntax

[ROUTe:]MODule

:DELete

[:NAME] <module_name>

Query Syntax

*RST Value

N/A

Limits

Related Commands

[ROUTe]:MODule:DEFine[:NAME]

[ROUTe]:MODule:CATalog?

[ROUTe:]MODule:DELete[:ALL]

Description

Examples

This command deletes a module name definition. After this command is

executed, the specified module name is no longer associated with a relay

module.

Command

Response

route:module:catalog?

“M1”, “M2”, “M3”

route:module:delete m1 Delete module name “M1”

route:module:catalog?

“M2”, “M3”

Command Syntax

[ROUTe:]MODule

:DELete

:ALL

Query Syntax

*RST Value

Limits

N/A

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Command Descriptions

Related Commands

[ROUTe]:MODule:DEFine[:NAME]

[ROUTe]:MODule:CATalog?

[ROUTe:]MODule:DELete[:NAME]

Description

Examples

This command will delete all module name definitions.

Command

Response

route:module:catalog?

“M1”, “M2”, “M3”

Delete all module names

route:module:deĆ

lete:all

route:module:catalog?

“ ”

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Command Descriptions

OPEN

Command Syntax

Query Syntax

Query Response

*RST Value

[ROUTe:]OPEN <channel_list>

[ROUTe:]OPEN? <channel_list>

See examples.

All relays on all modules are set to the open position.

Limits

The limits on the relay numbers in the <channel_list> portion of this command

depend on the model number of the relay module(s) specified in the <chan-

nel_list>. The syntax of a <channel_list> is described by the following diagram:

<channel_range>

<NR1>

<channel_list>

(

<module_name>

(

)

<channel_range>

A module_name is an ASCII string that has been associated with a relay module

in a ROUTe:MODule:DEFine command. A channel_range may consist of a

single relay number or a range of relay numbers. A range of relay numbers is

indicated by two relay numbers separated by a “:” character.

A relay number may have one, two, or three dimensions depending on the

architecture of the relay module containing the relay. For example, the VX4350

contains 64 SPDT relays. Only one-dimensional relay numbers are supported for

this module. The VX4380 Module contains four 4 × 16 2-wire matrices.

Three-dimensional channel numbers are supported for this module. The first

specifies the row, the second specifies the column and the third specifies the

matrix containing the relay. Multi-dimensional relay numbers are represented by

integers separated by “!” characters. See the manuals for the VX4330, VX4350,

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Command Descriptions

and VX4380 for more information on the format of relay numbers for these

modules.

The [ROUTe:]OPEN command is not supported for the VX4320 Module. This

module contains eight 4-to-1 RF multiplexors. One and only one channel in each

multiplexor is closed at all times.

Related Commands

Description

[ROUTe:]CLOSe <channel_list>

[ROUTe:]MODule:DEFine

This command closes the relays specified in the <channel_list> portion of this

command.

Examples

In these examples the Option 01 is installed on a VX4350 Module. A VX4380

and VX4330 are installed in consecutive slots to the right of the slot containing

the VX4350. The default module names for the VX4350, VX4380, and VX4330

in this configuration are m1, m2, and m3 respectively. These module names may

be altered with the [ROUTe:]MODule:DEFine command.

Command

Response

route:open (@m3(4!6))

Open relay 4 in section 6 of the VX4330 Scanner Module.

route:open

(@m1(1,2,3,10:64))

Open relays 1,2,3 and 10 through 64 on the VX4350 General

Purpose Switch Module.

route:open

(@m2(3!16!4))

Open row 3, column 16 of section 4 of the VX4380 Matrix

Module.

route:open

(@m3(2!1:2!3))

Open relay 2 in sections 1 through 3 on the VX4330 Scanner

Module.

route:open

(@m3(4!6),m2(3!16!4))

Combined effect of examples 1 and 3.

route:module:define

scanner,3

Open channel 3 of section 2 on the VX4330 Module after

redefining its module name to “scanner”.

route:open (@scanner

(3!2))

route:open

(@m2(1!1!1,4!6!2))

Open the following relays on the VX4380 matrix Module:

Row

Column Section

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Command Descriptions

Command

Response

route:open?

(@m1(1,2,3,4))

1 1 0 0

This response indicates that relays 1 and 2 on the VX4350 are

open and relays 3 and 4 on this module are closed.

route:open? (@scanner

(3!2))

This response indicates that channel 3 of section 2 of the

VX4320 is open. Note that a route:module:define scanner,3

command has been received prior to this query.

Command Syntax

[ROUTe:]OPEN

:ALL [module_name]

Query Syntax

*RST Value

N/A

All relays on all modules are set to the open position.

N/A

Limits

Related Commands

[ROUTe:]CLOSe

[ROUTe:]MODule:DEFine

Description

If a module name is not specified in this command, open all relays on all

modules controlled by the Option 01. If a module name is specified, open all

relays on the specified module only. In either case do not change the state of the

configuration relays on VX4330 Modules.

The [ROUTe:]OPEN command is not supported for the VX4320 Module. This

module contains eight 4-to-1 RF multiplexors. One and only one channel in each

multiplexor is closed at all times.

Command

Response

Examples

ROUTE:OPEN:ALL

Open all relays on all Modules controlled by the VX4300. Do

not change the state of the configuration relays on VX4330

Modules.

rout:open:all

Same as the first example.

route:open:all gp

Open all relays on the module that has been assigned module

name “gp”. See the [ROUTe:]MODule:DEFine command.

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Command Descriptions

Command Syntax

[ROUTe:]OPEN

:DWELl <module_name>,<nrf>

Query Syntax

*RST Value

Limits

N/A

The open dwell time of all modules is set to 0 seconds.

The value of the time specified in this command must be between 0 and 6.5535

seconds.

Related Commands

[ROUTE:]OPEN

[ROUTe:]SCAN

Description

Examples

This command sets the time to wait after opening a relay before proceeding.

In the following example the Option 01 is installed on a VX4330 Module.

Command

Response

output:ttltrg1:state

Enable VXI TTL trigger 1.

route:close:dwell

m1,.25

Set the close dwell time for the VX4330 to 0.25 seconds.

Set the open dwell time for the VX4330 to 0.5 seconds.

route:open:dwell

m1,0.5

route:scan

(@m1(1!6:20!6))

Define a scan list consisting of relays 1 through 20 in section 6

of the VX4330.

trigger:Sequence:

source ttltrg2

Define VXI TTL trigger 2 as the trigger source for the defined

scan list.

trigger:sequence:delay Set the trigger delay time to 1 second.

initiate:immediate

Initiate the scan sequence.

After this sequence, each time the VXI TTL trigger 2 is pulsed low, the

following sequence of events occurs:

1. One second delay. This is the delay specified in the trigger:Sequence:delay

command.

2. The current relay in the scan list is opened.

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Command Descriptions

3. 0.5 second delay. This is the delay specified in the route:open:dwell

command.

4. Close the next relay in the scan list.

5. 0.25 second delay. This is the delay specified in the route:close:dwell

command.

6. Pulse VXI TTL trigger 1 low for 3 msec.

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Command Descriptions

OUTPut

Command Syntax

OUTPut

:TTLTrg<n>

[:STATe] ON | OFF | <nrf>

Query Syntax

OUTPut

:TTLTrg<n>

[:STATe]?

Query Response

*RST Value

Indicates whether a VXI TTL trigger is enabled.

All VXI TTL triggers are disabled.

Related Commands

ROUTe:CLOSe

ROUTe:SCAN

Description

Examples

One or more VXI TTL triggers may be enabled. Triggers that are enabled are

pulsed low for 3 msec after a relay is closed by the Option 01 after a time

specified by the ROUTe:CLOSe:DWELl command.

Command

Response

output:ttltrg1:state

Enable driving VXI TTL trigger 1.

outp:ttlt2 off

Disable driving VXI TTL trigger 2.

Enable driving VXI TTL trigger 7.

outp:ttlt7:stat 1

output:ttltrg4:state?

This response indicates that VXI TTL trigger 4 is enabled.

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Command Descriptions

PFAil

Command Syntax

Query Syntax

*RST Value

[ROUTe:]PFAil <action_at_powerfail>

N/A

All relays on all modules are opened when power is removed from the VXI

chassis.

Limits

Related Commands

Description

N/A

This command specifies the state that all latching relays on all modules

controlled by the Option 01 are to be placed in when power is removed from the

VXI chassis containing the modules. <action_at_powerfail> must be OPEN or

SAME. If OPEN is specified, all latching relays are opened at powerfail. If

SAME is specified, all latching relays are left in their current state at powerfail.

NOTE. VXI chassis +5 V power is maintained for 4 milliseconds after ACFAIL is

asserted, in compliance with VXI Specifications. This allows for orderly system

shutdown and implementation of the PFAil OPEN option.

Command

Response

Examples

route:pfail same

route:pfail open

Leave all latching relays in their current state at powerfail.

Open all latching relays at powerfail.

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Command Descriptions

SCAN

Command Syntax

Query Syntax

*RST Value

Limits

[ROUTe:]SCAN <channel_list>

N/A

No scan list is defined.

The limits on the relay numbers in the <channel_list> portion of this command

depend on the model number of the relay module(s) specified in the <chan-

nel_list>. The syntax of a <channel_list> is described by the following diagram:

<channel_range>

<NR1>

<channel_list>

(

<module_name>

(

)

<channel_range>

A module_name is an ASCII string that has been associated with a relay module

in a ROUTe:MODule:DEFine command. A channel_range may consist of a

single relay number or a range of relay numbers. A range of relay numbers is

indicated by two relay numbers separated by a “:” character.

A relay number may have one, two, or three dimensions depending on the

architecture of the relay module containing the relay. For example, the VX4350

contains 64 SPDT relays. Only one-dimensional relay numbers are supported for

this module. The VX4380 Module contains four 4 × 16 2-wire matrices. Three-

dimensional channel numbers are supported for this module. The first specifies

the row, the second specifies the column, and the third specifies the matrix

containing the relay. Multi-dimensional relay numbers are represented by

integers separated by “!” characters. See the user manuals for the VX4320,

VX4330, VX4350, and VX4380 for more information on the format of relay

numbers for these modules.

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Command Descriptions

Related Commands

TRIGger[:SEQuence]:SOURce

TRIGger[:SEQuence]:COUNt

TRIGger[:SEQuence]:DELay

TRIGger[:SEQuence]:IMMediate

INITiate[:IMMediate]

[ROUTe:]CLOSe:DWELl

[ROUTe:]OPEN:DWELl

Description

This command defines a list of relay closures to sequence through. This list is

called a scan list. When the ROUTe:SCAN <channel_list> command is received,

all relays in this list are opened. In addition to defining a scan list, a trigger

source must be specified using the TRIGger[:SEQuence]:SOURce command.

Trigger events are not recognized until triggers are armed by an INITiate

[:IMMediate] or INITiate:CONTinuous command.

When the first trigger event is detected, the first relay in the scan list is closed.

When the second trigger event is detected, the first relay is opened and the

second relay is closed. When the nth trigger event is detected, the (n–1)th relay is

opened and the nth relay is closed. The act of opening the (n–1)th relay and

closing the nth relay is called sequencing the scan list. At any given time after

the first trigger event is detected, only one relay in the scan list is closed.

The TRIGger[:SEQuence]:COUNt command may optionally be used to specify

the number of times to sequence through the entire scan list. The TRIGger

[:SEQuence]:DELay, [ROUTe:]CLOSe:DWELl, and [ROUTe:]OPEN:DWELl

commands may optionally be used to specify the time to wait after a trigger

event is detected, a relay is closed or a relay is opened. A TRIGger[:SEQuence]

[:IMMediate] command causes the scan list to be sequenced without the delay

specified by a previously issued TRIGger[:SEQuence]:DELay command.

Examples

In these examples the Option 01 is installed on a VX4350 Module. A VX4380

and VX4330 are installed in consecutive slots to the right of the slot containing

the VX4350.

Command

Response

route:module:define

gp,1

Assign module name “gp” to the VX4350.

route:module:define

matrix,2

Assign module name “matrix” to the VX4380.

Assign module name “scan” to the VX4330.

route:module:define

scan,3

route:scan

Define a scan list consisting of relays 1 through 64 on the

VX4350, relays at row 1, column 1 of section 1 and row 2,

column 10 of section 3 of the VX4380 and relays 1 through 20

of section 1 of the VX4330.

(@gp(1:64),maĆ

trix(1!1!1, 2!10!3),

scan(1!1:20!1))

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Command Descriptions

Command

Response

trigger:sequence:

source immediate

Define a trigger source of “immediate”. This means to

sequence through the scan list without waiting for a trigger

event.

trigger:sequence:count Sequence through the entire scan list five times.

route:close:dwell

gp,.5

Wait 0.5 seconds after closing a relay on the VX4350.

initiate:immediate

*OPC

Begin sequencing through the scan list.

Set the Operation Complete bit of the Standard Event Status

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Command Descriptions

STATus

Command Syntax

STATus

:OPERation

:CONDition?

*RST Value

Limits

N/A

Related Commands

Description

This query returns the contents of the SCPI Status Operation Condition register.

For the Option 01, the value of this register is always equal to 0.

Command

Response

Examples

status:operation:

condition?

00000

Command Syntax

STATus

:OPERation

:ENABle

Query Syntax

STATus:

OPERation

:ENABle?

*RST Value

Limits

N/A

Related Commands

Description

This command sets the contents of the SCPI Status Operation Event Enable

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Command Descriptions

Command

Response

Examples

status:operation:

enable 1

stat:oper:enab?

00001

Command Syntax

STATus

:OPERation

[:EVENt?]

*RST Value

Limits

N/A

Related Commands

Description

This query returns the contents of the SCPI Status Operation Event register. For

the Option 01, the value of this register is always equal to 0.

Command

Response

Examples

status:operation:

event?

00000

Command Syntax

STATus

:QUEStionable

:CONDition?

*RST Value

Limits

N/A

Related Commands

Description

This query returns the contents of the SCPI Status Questionable Condition

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Command Descriptions

Command

Response

Examples

status:questionable:

condition?

00000

Command Syntax

STATus

:QUEStionable

:ENABle

Query Syntax

STATus

:QUEStionable

:ENABle?

Query Response

*RST Value

Indicates whether the Status Operation Event is enabled.

Limits

N/A

Related Commands

Description

This command sets the contents of the SCPI Status Operation Event Enable

Command

Response

Examples

status:questionable:

enable 1

stat:ques:enab?

00001

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Command Descriptions

Command Syntax

STATus

:QUEStionable

[:EVENt?]

*RST Value

Limits

N/A

Related Commands

Description

This query returns the contents of the SCPI Status Questionable Event register.

For the Option 01, the value of this register is always equal to 0.

Command

Response

Examples

status:questionable:

event?

00000

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Command Descriptions

SYSTem

Command Syntax

SYSTem

:ERRor?

Query Response

Each response is terminted with a carriage return <CR> and a line feed<LF>.

0,“No error”

–102, “Syntax error; 1 dimensional <channel_spec> invalid for VX4330

module”

–102, “Syntax error; 2 dimensional <channel_spec> invalid for VX4350

module”

–102, “Syntax error; 3 dimensional <channel_spec> invalid for VX43xx

module”

–102, “Syntax error; channel dimension mismatch”

–102, “Syntax error; integer field greater than 10 characters”

–102, “Syntax error; Missing module name”

–102, “Syntax error; Module address not specified”

–102, “Syntax error; Module name already defined”

–102, “Syntax error; Module name length greater than 12 characters”

–102, “Syntax error; Non-contiguous section numbers”

–102, “Syntax error; ROUTe:CONFigure command invalid for VX43xx module”

–102, “Syntax error; ROUTe:DISJoin command invalid for VX43xx module”

–102, “Syntax error; ROUTe:JOIN command invalid for VX43xx module”

–102, “Syntax error; ROUTe:MODE command invalid for VX43xx module”

–102, “Syntax error; Undefined module name”

–102, “Syntax error; Unexpected x detected while ...”

–121, “Invalid character in number”

–123, “Exponent too large”

–200, “Execution error; Reserved”

–200, “Execution error; Scan list undefined”

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Command Descriptions

–211, “Trigger ignored”

–213, “Init ignored”

–222, “Data out of range; Channel number x on module y”

–222, “Data out of range; Channel number x!x on module y”

–222, “Data out of range; Channel number x!x!x on module y”

–222, “Data out of range; Invalid module address specified”

–222, “Data out of range; Invalid section number”

–222, “Data out of range; Invalid sequence count”

–222, “Data out of range; Invalid trigger delay”

–222, “Data out of range; Invalid VXI TTL Trigger level”

–222, “Data out of range; Maximum value for ESE command is 255”

–222, “Data out of range; Maximum value for SRE command is 255”

–222, “Data out of range; Invalid dwell time specified.”

–223, “Too much data; Channel list array overflow”

–223, “Too much data; Input buffer overflow”

–223, “Too much data; Output buffer full”

–223, “Too much data; Scan list array overflow”

–240, “Hardware error; Shift register verification error – module y”

–240, “Hardware error; Unrecognized module x, y”

–350, “Queue overflow; Error/event queue”

–350, “Queue overflow; Output queue”

*RST Value

The error/event queue is empty.

N/A

Limits

Related Commands

*ESR?

*STB?

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Command Descriptions

Description

If an error condition is detected by the Option 01, it places an error message

describing the condition in the error/event queue. The SYSTem:ERRor? query

requests the Option 01 to remove the oldest message in the error/event queue and

place it into the output queue. If the error/event queue is empty, a “No error”

message is placed in the output queue.

Command

Response

Examples

SYSTEM:ERROR?

syst:err?

0, “No error”

–222,“Data out of range; Invalid section number”

Command Syntax

SYSTem:

PRESet

Query Syntax

*RST Value

N/A

Limits

N/A

Related Commands

Description

ROUTe:OPEN:ALL

Channel 1 of all sections on all VX4320 Modules is closed. All relays on all

modules (except VX4320 Modules) are set to the open position. The PON bit of

the Standard Event Status register is not affected by this command.

Command

Response

no response

Examples

system:preset

syst:pres

Command Syntax

SYSTem

:VERSion?

*RST Value

Limits

N/A

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Command Descriptions

Related Commands

Description

None

This query returns the following ASCII string in the output queue:

“1994.0”

Command

Response

“1994.0”

Examples

system:version?

syst:vers?

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Command Descriptions

TRIGger

Command Syntax

TRIGger

[:SEQuence]

:COUNt

Query Syntax

*RST Value

N/A

Limits

The count specified in this command must be between 1 and 65535.

Related Commands

ABORt, ROUTe:SCAN

TRIGger[:SEQuence]:SOURce

TRIGger[:SEQuence][:IMMediate]

TRIGger[:SEQuence]:DELay

Description

Examples

This command specifies the number of times to sequence through an entire scan

sequence.

Command

Response

route:scan

(@m1(1,2),m2(1:64))

Define a scan sequence consisting of relays 1 and 2 on relay

module m1 and relays 1 through 64 on module m2.

trigger:sequence:count Define the number of times to sequence through the scan list

before setting the state of the trigger subsystem back to the

idle state.

trigger:sequence:

source:immediate

Sequence through the scan list without waiting for a trigger

event after an INITiate[:Immediate] command is received.

initiate:immediate

Initiate the scan sequence. Sequence through the entire scan

list two times.

Command Syntax

Query Syntax

TRIGger

[:SEQuence]

:DELay

N/A

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Command Descriptions

*RST Value

Limits

The time specified in this command must be between 0 and 6.5535 seconds.

Related Commands

ABORt, ROUTe:SCAN

TRIGger[:SEQuence]:SOURce

TRIGger[:SEQuence][:IMMediate]

TRIGger[:SEQuence]:DELay

Description

Examples

This command specifies the time to wait after a trigger event is detectedbefore

opening the current relay in a scan list. A trigger event is enabled with teh

TRIGger:[SEQuence]:SOURce command.

Command

Response

route:scan

(@m1(1,2),m2(1:64))

Define a scan sequence consisting of relays 1 and 2 on relay

module m1 and relays 1 through 64 on module m2.

trigger:sequence:count Define the number of times to sequence through the scan list

before setting the state of the trigger subsystem back to the

idle state.

trigger:sequence:delay Wait 0.5 seconds after a trigger event is detected before open-

0.5

ing the current relay in a scan list and closing the next relay in

the list.

trigger:sequence:

source ttltrg2

Sequence to the next relay in a scan list when VXI TTL trigger

2 is asserted.

initiate:immediate

Initiate the scan sequence. Sequence through the entire scan

list two times. Wait 0.5 seconds after VXI TTL trigger 2 is as-

serted before sequencing to the next relay in the list.

Command Syntax

TRIGger

[:SEQuence]

[:IMMediate]

Query Syntax

*RST Value

Limits

N/A

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Command Descriptions

Related Commands

ABORt, ROUTe:SCAN

TRIGger[:SEQuence]:SOURce

TRIGger[:SEQuence]:COUNt

TRIGger[:SEQuence]:DELay

Description

Examples

Sequence to the next relay in an initiated scan list without waiting for a trigger

event and without waiting the time specified in a TRIGger[:SEQuence]:DELay

command.

Command

Response

route:scan

(@m1(1,2),m2(1:64))

Define a scan sequence consisting of relays 1 and 2 on relay

module “m1” and relays 1 through 64 on module m2.

trigger:sequence count Define the number of times to sequence through the scan list

before setting the state of the trigger subsystem back to the

idle state.

trigger:sequence:delay Wait 0.5 seconds after a trigger event is detected before

0.5

opening the current relay in a scan list and closing the next

relay in the list.

trigger:sequence:

source:ttltrg2

Sequence to the next relay in a scan list when VXI TTL trigger

2 is asserted.

initiate:immediate

Initiate the scan sequence. Sequence through the entire scan

list 2 times. Wait 0.5 seconds after VXI TTL trigger 2 is

asserted before sequencing to the next relay in the list.

trigger:sequence:

immediate

Sequence to the next relay in the scan list without waiting for

VXI TTL trigger 2 to be asserted. Do not wait 0.5 seconds to

sequence to the next relay.

Command Syntax

TRIGger

[:SEQuence]

:SOURce BUS | HOLD | IMMediate | TTLTrg<n>

Query Syntax

*RST Value

N/A

IMMediate

Limits

N/A

Related Commands

ABORt, ROUTe:SCAN

TRIGger[:SEQuence][:SOURce]

TRIGger[:SEQuence][:IMMediate]

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Command Descriptions

TRIGger[:SEQuence][:COUNt]

TRIGger[:SEQuence][:DELay]

Description

This command selects a trigger source. When a trigger event is detected from an

enabled trigger source, the next relay in an initiated scan sequence is closed after

the current closed relay is opened.

The action of opening the currently closed relay and closing the next relay in a

scan list is called sequencing the scan list.

Specifying BUS in the TRIGger[:SEQuence]:SOURce command enables a

IEEE488.1 Group Execute Trigger command to sequence the scan list.

It is assumed that the commander of the Option 01 is a IEEE488 talker/listener

and that this device converts a IEEE488.1 GET command to a VXI Trigger

command.

Specifying HOLD in the TRIGger[:SEQuence]:SOURce command disables all

trigger sources.

Specifying IMMediate in the TRIGger[:SEQuence]:SOURce command causes

the Option 01 to sequence through the scan list without waiting for a trigger

event.

Specifying TTLTrg<n> in the TRIGger[:SEQuence]:SOURce command enables

one of eight VXI TTL triggers to act as a trigger source. <n> is a single digit

between 0 and 7.

Command

Response

Examples

route:scan

(@m1(1,2),m2(1:64))

Define a scan sequence consisting of relays 1 and 2 on relay

module “m1” and relays 1 through 64 on module m2.

trigger:sequence:count Define the number of times to sequence through the scan list

before setting the state of the trigger subsystem back to the

idle state.

trigger:sequence:

source:immediate

Sequence through the scan list without waiting for a trigger

event after an INITiate[:Immediate] command is received.

initiate:immediate

Initiate the scan sequence. Sequence through the entire scan

list two times.

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IEEE-488.2 Common Commands

This section lists the IEEE-488.2 common commands and queries recognized by

the Option 01.

*CLS

Clear Status. This commands clears the following:

Event Status register (ESR)

Error/Event queue

Output queue

*ESE <NRf>

Event Status Enable (ESE) command. This command defines the mask for

setting the Event Status Summary bit (bit 5) in the Status Byte register (*STB?).

The mask is logically ANDed with the Event Status register (*ESR?) to

determine whether or not to set the Event Status Summary bit. The mask can be

any numeric value from 0 to 255, corresponding to the encoded bits of the ESR

it. The *ESE register is cleared at power-on, or by writing an *ESE 0 command

only. If <mask> is not specified, it defaults to 0.

For example, the command *ESE 37 (hexadecimal 25, binary 00010101) enables

setting the Event Status Summary bit whenever an operation is complete, a query

error is detected, or an execution error is detected.

*ESE?

*ESR?

Event Status Enable (ESE) query. This command returns the value of the Event

Status Enable register as a numeric value from 0 to 255. For example, a value of

32 (hexadecimal 40, binary 00100000) indicates that command error reporting is

enabled.

Event Status Register (ESR) query. This command returns the value of the Event

Status register. The *ESR command is destructively read (that is, read and

cleared). The Event Status Summary bit in the Status Byte (*STB?) is also

cleared by a read of the ESR. The ESR is set to 128 on power-on (bit 7) set. It is

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IEEE-488.2 Common Commands

cleared by an *ESR? or *CLS command only. When converted to a binary

number, the bits of the ESR correspond to:

bit 0 (LSB)

Operation Complete

Request Control

Query error

Device Dependent error

Execution error

Command error

User Request

7 (MSB)

Power On

The Error bits are set whenever the module detects an error. The error values

from –100 to –199 are Command errors. Error values from –200 to –299 are

Execution errors. Error values from –300 to –399 are Device Dependent errors.

Error values from –400 to –499 are Query errors (see the SYSTem:ERRor

command description).

The Request Control and User Request bits are unused, and are always reported

as zeroes.

The Operation Complete bit is set in response to an *OPC command. A 1

indicates that the module has completed all pending commands and queries.

*IDN?

Identification query; This returns a 4-field response. Field 1 is the manufacturer,

field 2 the model, field 3 the serial number, and field 4 contains both the SCPI

and the firmware version levels. For the Option 01, the serial number field is

always a 0. The response syntax is:

TEKTRONIX,VX43xx,0,SCPI:94.0 FW1.1<LF>

where xx indicates the model number of the relay module that the Option 01 is

installed on:

Value of xx

Model Number

VX4320

VX4330

VX4350

VX4380

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IEEE-488.2 Common Commands

*OPC

Operation Complete. This command causes the module to set the Operation

Complete bit in the Event Status register (ESR) when all pending commands and

queries are complete.

*OPC?

Operation Complete query. This command causes the module to place a “1” in

the Output queue when all pending commands and queries are complete. All

commands following *OPC are suspended until the pending operations are

complete. The *OPC? command does not affect the OPC bit in the Event Status

*RST

Reset. This command causes the Option 01 to open all relays on all modules

under its control, except for VX4320 Modules. Channel 1 in each section of each

VX4320 Module is closed. This command sets the Option 01 Module to its

power-on state with the following exceptions: the Error/Event queue, Output

queue, Standard Event Status Enable register, SCPI Status Operation Event

Enable register and SCPI Status Questionable Event Enable register are not

cleared.

The condition of the Option 01 daughter board and the switching modules that it

controls after receipt of a *RST command is as follows:

Contents of the SCPI Status Operation Event register = 0

Contents of the SCPI Status Operation Condition register = 0

Contents of the SCPI Status Questionable Event register = 0

Contents of the SCPI Status Questionable Condition register = 0

All VXI TTL triggers are disabled

Trigger subsystem is in the idle state

Trigger source = IMMediate

Number of times to sequence through an entire scan list = 1

Time in seconds to wait after a trigger event is detected before sequencing to

the Next relay in a scan list = 0

All relays on all modules are set to the open position

No scan list is defined

Default module names are assigned as follows:

The module that has a Option 01 VXI Interface daughter board installed

is assigned module name “M1”.

Modules without the Option 01 VXI Interface daughter board in

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IEEE-488.2 Common Commands

consecutive slots to the right of module “M1” are assigned module

names “M2”, “M3”, ..., “M11”.

All sections on all scanner modules are disjoined

All sections of all VX4330 Modules are set to operate in the mux mode

Close dwell time of all modules is set to 0 seconds

Open dwell time of all modules is set to 0 seconds

All relays on all modules are opened when power is removed from the VXI

chassis

*SRE <mask>

Service Request Enable (SRE) register. This command defines a mask that is

ANDed with the contents of the Status Byte register. If the result of this

operation is non-zero, the Option 01 generates a VXI Request True interrupt.

Bits 0, 1, 3, 6, and 7 of the SRE register are not used. Bits 2, 4, and 5 are set to

enable VXI Request True interrupts to be generated under the conditions listed in

the following table.

Bit No.

Meaning

bit0 (LSB)

Not used

The Error/Event queue contains one or more error messages

Not used

The Output queue contains one or more query responses

The contents of the Standard Event Status register ANDed with the

contents of the Standard Event Status Enable register produces a

non-zero result.

Not used

*SRE?

Service Request Enable (SRE) query. This command returns the value of the

Service Request Enable register as a numeric value from 0 to 255. Bit 6 is

unused, and is reported as zero.

*STB?

Status Byte Query. This query returns the value of the Status Byte register as a

numeric value between 0 and 255. The Status Byte register contents (with the

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IEEE-488.2 Common Commands

exception of bit 6) are also returned in response to a VXI Read STB command.

Bit 6 is read destructively in response to a VXI Read STB command. Bit 6 is not

read destructively is response to a *STB? query. The Status Byte register is

encoded as follows:

Bit No.

bit 0 (lsb)

bit 1

Meaning

Not used

bit 2

Set when the Error/Event queue contains one or more error messages.

Not used

bit 3

bit 4

Set when the Output buffer contains one or more query responses.

bit 5

Set when the contents of the Standard Event Status register ANDed

with the contents of the Standard Event Status Enable register

produces a non-zero result.

bit 6

Set when the contents of bits 0 through 5 and bit 7 of the Status Byte

If bit 6 becomes set, the Option 01 will generate a VXI Request True

interrupt on the VME interrupt level selected by its interrupt level select

switch. If bit 6 becomes set and the Status Byte register is read using a

VXI Read STB command, bit 6 will be reported as being set. In

response to subsequent VXI Read STB commands, bit 6 will be

reported as being cleared.

If bit 6 becomes set and the Status Byte register is read using a *STB?

query, bit 6 will be reported as being set. Bit 6 will continue to be

reported as set in reponse to *STB queries until the contents of bits 0

through 5 and bit 7 of the Status Byte register ANDed with the contents

of the Service Request Enable register is equal to 0.

bit 7

Not used.

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IEEE-488.2 Common Commands

*TRG

Trigger Command. This command is equivalent to a VXI Trigger command.

This command is valid only after the following commands have been received

by the Option 01:

Command

Description

[ROUTe:]SCAN

<channel_list>

Define a scan list

TRIGger

[:SEQuence]

:SOURce BUS

Select a VXI Trigger command as a trigger source.

INITiate[:IMMediate]

Initiate the scan list. This command places the trigger

subsystem in the “ARM” state. The trigger subsystem remains

in this state until the Option 01 has sequenced through the

entire scan list “n” times, where “n” has been previously

specified in a TRIGger[:SEQuence]:COUNT command. The

trigger subsystem then returns to the IDLE state. The trigger

subsystem also returns to the IDLE state if an ABORt

command is received by the Option 01.

After these commands have been issued, a *TRG command will cause the

Option 01 to take the following actions:

Generate a trigger delay that has previously been specified in a TRIGger

[:SEQuence]:DELay command.

Open the currently closed channel .

Generate the open delay that has previously been specified in a

[ROUTe:]OPEN:DWELl command.

Close the next channel in the scan list.

Generate the close delay that has previously been specified in a

[ROUTe:]CLOSe:DWELl.

Pulse one or more VXI TTL trigger signals that have been enabled by a

previously issued OUTPut:TTLTRG<n>[:STATe] ON command.

If the module containing the channel is a scanner module, pulse the

appropriate front panel encode signal.

If another *TRG command is received before this sequence is complete, a SCPI

–211,“Trigger ignored” error message will be placed in the Error/Event queue.

The *TRG command will continue to have this effect until the trigger subsystem

is placed in the IDLE state. If additional *TRG commands are recieved after the

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IEEE-488.2 Common Commands

trigger system is placed in the IDLE state, the Option 01 will place SCPI

–211,“Trigger Ignored” error messages in the Error/Event queue.

The IEEE-488.2 Specification equates the *TRG command with an IEEE-488.1

Group Execute Trigger (GET) command. IEEE-488-to-VXI interface modules

typically convert IEEE-488.1 GET commands to VXI Trigger commands. For

this reason, the Option 01 equates the *TRG command with a VXI Trigger

command.

*TST?

Self Test query. In response to this query, the Option 01 performs a self test of

each of the switching modules under its control. During self test, the Option 01

verifies that it can properly control the relay drive circuitry of each switching

module under its control. After the self test is complete, each module is restored

to its pretest state. If all modules pass self test, an ASCII “0” is placed in the

Output buffer. If one or more modules fail the self test, an ASCII “1” is placed in

the Output buffer and error message(s) describing the failure are queued in the

Error/Event queue. Issue a SYSTem:ERRor? query to read these error messages.

*WAI

Wait to Continue. This command causes the module to wait until all pending

commands and queries are complete. All commands following *WAI are

suspended until the pending operations are complete.

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Status and Events

The Status and Event Reporting System reports asynchronous events and errors

that occur in the Option 01 VXI Interface Module. This system consists of four

8-bit registers and two queues that you access through the command language.

You can use these registers and queues to query the instrument status and control

the interrupts that report events.

In general, after an interrupt occurs, first conduct a serial poll, query the registers

to see why the interrupt occurred, and then send the SYSTem:ERRor? query to

see a descriptive error message.

This section describes the four registers and two queues of the Status and Event

Reporting system. For each register, you are given a description, a table

describing all of the bits, and an example of how to use the register.

The Status and Event Reporting process, synchronizing programming com-

mands, and the system messages are also described in this section.

Status and Event Reporting System

The Status and Event Reporting system monitors and reports such events as an

error occurring or the availability of a response to a query. This system includes

descriptions of the following registers and queues:

Status Byte register

Service Request Enable register

Standard Event Status register

Event Status Enable register

Output queue

System Error and Event queue

Status Byte Register

The Status Byte register, shown in Table 4–1, summarizes information from

other registers. Use a serial poll or a *STB? query to read the contents of the

Status Byte register. The response is the sum of the decimal values for all bits

set. When you use a serial poll, bit 6 shows Request Service information. When

you use the *STB? query, bit 6, the Master Status Summary bit, indicates that

bits 5, 4, or 2 may be set.

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Status and Events

Table 4–1: The Status Byte Register

Decimal

Value

Bit

0–1

Function

–

Not used.

Error/Event queue Not Empty indicates that information is

contained in the Error/Event queue and is waiting to be read.

–

Not used.

Message Available shows that output is available in the Output

queue.

Event Status Bit indicates that one or more events have occurred

and the corresponding bits in the Standard Event Status register

have been set.

Request Service (obtained from a serial poll) shows that the

Option 01 has requested service from the GPIB controller.

Master Status Summary (obtained from *STB? query) summarizes

the Event Status bit, Message Available bits, and Error/Event

queue Not Empty bits in the Status Byte register.

–

Not used.

A common example of using the Status Byte register is to enable the Message

Available bit. This is done by sending an *SRE 16 command to the Option 01

VXI Interface Module. If the *STB? query returns a value of 80, bit 4 (decimal

value of 16) and bit 6 (decimal value of 64) have been set (giving a decimal sum

of 80). Bit 4 indicates that a message is available in the output queue. Bit 6

indicates that a bit in the Status Byte register that has been enabled by setting the

corresponding bit in the Service Request Enable register (in this case bit 4) has

been set.

Service Request Enable

The Service Request Enable register, shown in Table 4–2, controls which bits in

the Status Byte register will generate a service request. Use the *SRE command

to set bits in the Service Request Enable register. Use the *SRE? query to see

which bits in this register are enabled. The response from this query is the sum

of the decimal values for all bits set.

Table 4–2: The Service Request Enable Register

Decimal

Value

Bit

0–1

Function

–

Not used

Error/Event queue Bit indicates that a service request will be

generated when a message is placed in the Error/Event queue.

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Status and Events

Table 4–2: The Service Request Enable Register (Cont.)

Decimal

Value

Bit

Function

Not used

Message Available Bit indicates that a service request will be

generated when a message is placed in the Output queue.

–

Event Status Bit indicates that events summarized in bit 5 of the

Status Byte register will generate a service request.

6–7

Not used

If, for example, the *SRE? query returns a value of 48, bits 4 and 5 are set in the

Service Request Enable register. Any event that causes the Message Available bit

(bit 4) or Event Status bit (bit 5) to be set in the Status Byte register now

generates an interrupt. If you want an interrupt to be generated only when the

Event Status bit (bit 5) is set, use the *SRE 32 command.

Standard Event Status

The Standard Event Status register, shown in Table 4–3, records many types of

events that can occur in the Option 01. Use the *ESR? query to read the contents

of this register. The response is the sum of the decimal values for all bits set.

Reading this register clears all bits so the register can accumulate information

about new events.

Table 4–3: The Standard Event Status Register

Decimal

Value

Bit

Function

Operation Complete shows that the operation is complete. This bit

is set when all pending operations complete following a *OPC

command.

–

Not used

Query Error shows that data in the Output queue was lost.

Not used

Execution Error shows that an error occurred while the Option 01

was executing a command or query. Table 4–6 on page 4–7 lists

the execution error messages.

Command Error shows that an error occurred while the Option 01

was parsing a command or query. Table 4–5 on page 4–6 lists the

command error messages.

–

Not used

128

Power On shows that the Option 01 was powered on.

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Status and Events

The following example assumes that all bits have been enabled using the Event

Status Enable register (see the next section for information about this register). If

a *ESR? query returns a value of 128, bit 7 (decimal value of 128) is set

indicating that the instrument is in the initial power-on state.

Event Status Enable

The Event Status Enable register, shown in Table 4–4, controls which events are

summarized in the Event Status bit (bit 5) of the Status Byte register. Use the

*ESE command to set bits in the Event Status Enable register. Use the *ESE?

query to see what bits in the Event Status Enable register are set. The response

from this query is the sum of the decimal values for all bits summarized in the

event status bit of the Status Byte register.

Table 4–4: The Event Status Enable Register

Decimal

Value

Bit

Function

Set bit 5 of the Status Byte register when bit 1 (the Operation

Complete bit) of the Standard Event Status register is set.

Not used

Set bit 5 of the Status Byte register when bit 2 (the Query Error bit )

of the Standard Event Status register is set.

Not used

Set bit 5 of the Status Byte register when bit 4 (the Execution Error

bit) of the Standard Event Status register is set.

Set bit 5 of the Status Byte register when bit 5 (the Command Error

bit) of the Standard Event Status register is set.

Not used

128

Set bit 5 of the Status Byte register when bit 7 (the Power On bit) of

the Standard Event Status register is set.

If, for example, the *ESE? query returns a value of 255, all bits are set,

indicating that all events will set the event status bit (bit 5) of the Status Byte

The Output Queue

The Option 01 stores query responses in the Output queue.

The System Error and

Event Queue

The Option 01 error and event messages are stored in the System Error and

Event queue. Use the SYSTem:ERRor? query to get the event number and a text

description of the event. Reading an event removes it from the queue. The Event

queue stores detailed information for up to 10 events; the events are stored in

first-in first-out order.

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Status and Events

Status and Event Reporting Process

Figure 4–1 shows how to use the Status and Event Reporting system. In the

explanation that follows, numbers in parentheses refer to the circled numbers in

Figure 4–1.

Standard Event Status

Power

—

Command Execution

Error Error

Query

—

Operation

—

Event

queue

Event

Error

Complete

Read using *ESR?

Event Status Enable

Read using *ESE?

Write using *ESE

Power

Command Execution

Query

Operation

—

Output

queue

Byte

Error

Complete

Request

Service

—

Status Byte

Read using *STB?

—

Event

Message

queue Not

Empty

Status Bit Available

Master

Status

Service Request Enable

—

Event

Message

—

Read using *SRE?

Write using *SRE

Status Bit Available

Figure 4–1: Status and Event Reporting Process

When an event occurs the appropriate bit in the Standard Event Status register is

set to one and the event is recorded in the Event queue (1). If the corresponding

bit in the Event Status Enable register is also enabled (2), then the event status

bit in the Status Byte register is set to one (3).

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Status and Events

When output is sent to the Output queue (for example, a response to a query), the

message available bit in the Status Byte register is set to one (4).

When a bit in the Status Byte register is set to one and the corresponding bit in

the Service Request Enable register is enabled (5), the master status summary bit

in the Status Byte register is set to one and a service request is generated (6).

Messages

The Option 01 generates error messages in response to events caused by

commands or queries. Each type of event sets a specific bit in the Standard Event

Status register. Thus, each message is associated with a specific Standard Event

Status register bit. In the message tables that follow, the associated Standard

Event Status register bit is specified in the table title. Not shown in the tables are

secondary messages giving more detail about the cause of the error or the

meaning of the message. These secondary messages are shown for each

command and query in Syntax and Commands.

Table 4–5 shows the error messages generated by improper command syntax.

Check to see that the command is properly formatted and that it follows the rules

in Syntax and Commands.

Table 4–5: Command Error Messages (Bit 5 in Standard Event Status

Code

–102

Message

Syntax error; 1 dimensional <channel_spec> invalid for VX4330 module

Syntax error; 2 dimensional <channel_spec> invalid for VX4350 module

Syntax error; 3 dimensional <channel_spec> invalid for VX43xx module

Syntax error; channel dimension mismatch

Syntax error; integer field greater than 10 characters

Syntax error; Missing module name

Syntax error; Module name already defined

–102

Syntax error; Module name already defined

Syntax error; Module name length greater than 12 characters

Syntax error; Non–contiguous section numbers

Syntax error; ROUTe:CONFigure command invalid for VX43xx module

Syntax error; ROUTe:DISJoin command invalid for VX43xx module

Syntax error; ROUTe:JOIN command invalid for VX43xx module

Syntax error; ROUTe:MODE command invalid for VX43xx module

Syntax error; Undefined module name

Syntax error; Unexpected x detected while ...

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Status and Events

Table 4–5: Command Error Messages (Bit 5 in Standard Event Status

Code

–121

–123

Message

Invalid character in number

Exponent too large

Table 4–6 lists the execution error messages that can occur during execution of a

command. Parameter y in these error messages represents the local bus address

of the module that the error message applies to. A value of 1 indicates the

module containing the Option 01 daughter board, a value of 2 the module in the

next slot to the right, and so on.

Table 4–6: Execution Error Messages (Bit 4 in Standard Event Status

Code

–200

–211

–213

–222

–223

–240

–241

Message

Execution error; Reserved

Execution error; scan list undefined

Trigger ignored

Init ignored

Data out of range; Channel number x on module y

Data out of range; Channel number x!x on module y

Data out of range; Channel number x!x!x on module y

Data out of range; Invalid module address specified

Data out of range; Invalid section number

Data out of range; invalid sequence count

Data out of range; invalid trigger delay

Data out of range; Invalid VXI TTL Trigger level

Data out of range; Maximum value for ESE command is 255

Data out of range; Maximum value for SRE command is 255

Data out of range; invalid dwell time specified.

Too much data; channel list array overflow

Too much data; Input buffer overflow

Too much data; Output buffer full

Too much data; scan list array overflow

Hardware error; shift register verification error – module m

Hardware error; Unrecognized module d, d

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Status and Events

Table 4–7 lists the device dependent error messages that can occur during Option

01 operation.

Table 4–7: Device Dependent Error Messages (Bit 3 in Standard Event Status

Code

–350

Message

Queue overflow; error/event queue

Queue overflow; output queue

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Appendix A: Specifications

Table A–1: VXI Instrument Characteristics

Characteristics

Description

VXI General Characteristics

The instrument provides a VXI interface that complies with Revision 1.4.

The VXI interface is defined by the VXI Consortium, Inc.

Message Based (1.4)

Interface Type

Protocols

Word Serial (WSP)

TTL Outputs

VXI TTLTRG* Lines TTLTRG0* through TTLTRG7* under program control.

Product Compliance to Regulations

(VX4320, VX4330, VX4350, VX4380 only)

Product Safety

UL, cUL, UL classified to IEC–1010–1.

IEC Characteristics

Overvoltage Category:

Safety:

CAT I

Class I

EMC

Per EC Council Directive 89/336 EEC (EC–92), the following standards and limits

apply to the requirements for equipment to be used in residential, commercial, and

light industrial environments. They are specified in EN–50081–1, the Generic

Emission Standard, and in EN 50082–1, the Generic Immunity Standard. For

equipment that is also intended to be used in industrial environments, the standards

and limits specified in EN 50081–2 and EN 50082–2 should be used in addition.

Emissions

Emissions shall be within the limits specified by the following requirements:

Enclosure:

AC Mains:

EN 55011 Class A limit for radiated emissions.

EN 60555–2: Power line harmonics

Immunity, Enclosure, Radio Frequen- No state change when the instrument is subjected to a 3 V/M electromagnetic field

cy Electromagnetic Field; IEC 801–3 over the frequency range of 27 MHz to 500 MHz.

Immunity, Enclosure, Electrostatic

Discharge (ESD); IEC 801–2

Up to 8 kV with no loss of stored data, change to control settings, degradation of

performance, or temporary loss of function. No state change.

Immunity, Fast Transients, Common No loss of stored data, change to control settings, degradation of performance, or

Mode; IEC 801–4

temporary loss of function will occur when the instrument is subjected to the transients

as described below.

Port

Peak Voltage – kV Tr/Th – ns

Rep. Freq. – kHz

Signal & control

AC Power

0.5

5/50

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Appendix A: Specifications

Table A–1: VXI Instrument Characteristics

Characteristics

Description

EN 55011, Class A

The instrument complies with the requirements of EN 55011 for radiated, conducted,

and magnetic emissions, when installed in a suitable VXI chassis. A suitable VXI

chassis is defined as one which contains adequate EMC shielding which makes

contact with the RF gasket on the front and rear shields of the VX43xx Module.

FCC

The instrument complies with the requirements of FCC CFR 47, Part 15, Subpart B,

Class A for radiated and conducted emissions.

Table A–2: Environmental/Reliability Characteristics

Characteristics

Temperature

Operating

Description

Meets or exceeds MIL-T-28800E for Type III, 0 to 50_ C external ambient, when

operated in a mainframe providing Class 3 equipment.

Non-operating

–40_ C to +71_ C

Airflow as required by the host module, –10_ C/55_ C for 10_ C (or less) temperature

rise of internal air, as measured at the cooling air exit points, and with no heat transfer

either to or from any adjacent VXI modules.

Relative Humidity

Operating

Up to 95% at up to 30_ C, and up to 45%, at up to 50_ C.

Up to 95%, at up to 50_ C.

Non-operating

Altitude (1) Operating

Altitude (2)

6,000 ft. altitude.

Meets or exceeds MIL-T-28800E for Type III, (operating to 10,000 ft., non-operating to

15,000 ft.). Derate maximum operating temperature above TBD ft. by degree C per

1000 ft.

Table A–3: Option 01-Specific Characteristics

Characteristics

Description

VME Interrupter Level

VXI Logical Address

VXI Dynamic Addressing

Switch selectable to a level between 1 and 7.

Switch selectable to a value between 0 and 255.

Not supported.

Contents of device/manufacturer dependent

VXI registers.

ID Register

BFFD hexadecimal.

Device Type

Set according to the model number of the slave module that the interface is installed

on as specified in the following table. (Convert the last 3 digits of the model number to

hex, take the one’s complement, AND with F7FF.)

A–2

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Appendix A: Specifications

Table A–3: Option 01-Specific Characteristics (Cont.)

Characteristics

Description

Slave Module Model No.

VX4320

F6BF

F6B5

F6A1

F683

VX4330

VX4350

VX4380

VXI TTL Trigger Outputs

VXI TTL Trigger Inputs

One or more of the VXI TTLTRG* signals may be driven. All TTLTRG* outputs may be

disabled.

One of the VXI TTLTRG* signals may be selected to be polled or to act as an interrupt

source to the module’s microprocessor.

A–3

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Appendix B: Examples

This example script demonstrates how the some of the various programmable

features of the Option 01 are used to control from 1 to 12 relay modules. These

modules can consist of any combination of VX4320, VX4330, VX4350,

VX4372, VX4374 and VX4380 relay modules. In these examples, the Option 01

is installed on a VX4320 Module. A VX4330, VX4350, VX4372, VX4374, and

VX4380 are installed in consecutive slots to the right of the VX4320.

It is assumed the module has completed its power-on self test. For information

on specific commands or syntax, please review the Syntax and Commands

section.

Query the identity of the module that the Option 01 is installed on.

WRITE

READ

*IDN?

TEKTRONIX,VX4320,0,SCPI:94.0 FW:1.1<CR><LF>

Query the card for any self-test errors.

WRITE

READ

*TST?

Note that a response of 0 indicates that all modules controlled by the Option

01 daughter board passed the self test. A response of 1 indicates that one or

more modules have failed the self test. In that case, SYSTem:ERRor?

queries should be issued to determine which modules failed the self test.

Query the identity of all the modules controlled by the Option 01

WRITE

READ

route:id?

VX4320 VX4330 VX4350 VX4372 VX4374 VX4380

Query the module names assigned to each of the modules controlled by the

Option 01.

WRITE

READ

route:module:catalog?

"M1", "M2", "M3", "M4", "M5", "M6"

The names listed in the response to this query correspond to the modules in

the response to the route:id? query.

Check the contents of the Standard Event Status register.

WRITE

READ

*ESR?

128

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Appendix B: Examples

This response indicates that the Power On bit of the Standard Event Status

been sent to the Option 01 since power was applied to the module.

Check the contents of the Standard Event Status register again.

WRITE

READ

*ESR?

000

The content of the Standard Event Status register is equal to zero because

this register is read destructively. That is, it is set to zero after its contents are

reported following an *ESR? query.

Enable VXI TTL trigger 1 to be pulsed low for 3 µsec after a channel is

closed on any of the relay modules.

WRITE

output:ttltrg1:state on

Check to see if VXI TTL trigger 1 is enabled.

WRITE

READ

output:ttltrg1:State?

A response of 1 indicates that VXI TTL trigger 1 is enabled. A response of 0

indicates that this trigger is disabled.

Close channel 3 in section 5 of the VX4320 Module.

WRITE

close (@m1(3!5))

Configure the VX4330 as a 240-to-1 1-wire scanner.

WRITE

route:conf:join m2,(1:6)

route:conf owire,m2,(1:6)

route:close:mode scan,m2,(1:6)

Close channel 1 of section 1 of the VX4330.

WRITE route:close (@m2(1!1))

Close channel 40 of section 2 of the VX4330.

WRITE route:close (@m2(40!2))

Note that channel 1 of section 1 will be opened before channel 40 of section

2 is closed because sections 1 and 2 have been joined and both sections have

been set to a close mode of “scan”.

Close channels 1 through 10 on the VX4350 Module.

WRITE

close (@m3(1:10))

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Appendix B: Examples

Open channels 11 through 20 on the VX4350 Module.

WRITE open (@m3(11:20))

Query the close state of channels 1 through 20 on the VX4350 Module.

WRITE

READ

close? (@m3(1:20))

1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0

A query response of 1 indicates that the corresponding channel is closed, and

a response of 0 indicates that the channel is open.

Query the open state of channels 1 through 20 on the VX4350 Module.

WRITE

READ

open? (@m3(1:20))

0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1

A query response of 1 indicates that the corresponding channel is open, and a

response of 0 indicates that the channel is closed.

Join the two sections of the VX4372 Module.

WRITE

Close channel 10 in section 1 of the VX4372 Module.

WRITE close (@m4(10!1))

Disjoin the two sections of the VX4374 Module.

WRITE route:conf:disjoin m5

Close channel 12 of section 2 of the VX4374.

WRITE route:close (@m5(12!2))

Query the close state of the 12 channels in section 2 of the VX4374.

route:conf:join m4,(1,2)

WRITE

READ

route:close? (@m5(1!2:12!2))

0 0 0 0 0 0 0 0 0 0 0 1

Note that this query can also be specified as

route:close? (@m5(13:24))

Open all relays in section 4 of the VX4380 Module.

WRITE

route:open (@M6(1!1!4:4!16!4))

Close the relay that joins row 3 to column 12 in section 4 of the VX4380

Module.

WRITE

route:close (@m6(3!12!4))

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Appendix B: Examples

Query the close state of the relays in section 4 of the VX4380.

WRITE

READ

route:close? (@m6(1!1!4:4!16!4))

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Note that the channel close states are returned in the following order:

1!1!4, 1!2!4, 1!3!4, ..., 1!16!4,

2!1!4, 2!2!4, 2!3!4, ..., 2!16!4,

3!1!4, 3!2!4, 3!3!4, ..., 3!16!4,

4!1!4, 4!2!4, 4!3!4, ..., 4!16!4

which is the same order in which the channels were specified in the query.

Open all channels on all modules except the VX4320 Module. (Note that one

channel is always closed in each section of the VX4320, so the OPEN

command is not supported for this module.)

WRITE

route:open:all m2; all m3; all m4; all m5; all

Disjoin all sections of the VX4330.

WRITE

route:configure:disjoin m2

Configure sections 1 through 3 of the VX4330 to 4-wire configuration.

WRITE

route:Conf fwire,m2,(1:3)

Define a list of channels to scan through. Define this list as channels 1

through 10 in section 1 of the VX4330, channels 1 through 10 in section 2 of

the VX4330, channels 3 through 6 and 60 through 64 on the VX4350,

channels 1 through 12 in section 1 and 1 through 12 in section 2 of the

VX4374, and the channels that join row 2 to columns 1 through 16 in section

1 of the VX4380.

WRITE

route:Scan (@m2(1!1:10!1,1!2:10!2),

m3(3:6,60:64),m5(1:24),m6(2!1!1:2!16!1))

Set the time to wait after closing a relay before pulsing a VXI TTL trigger to

0.1 seconds for each module in the scan list defined in the previous example.

WRITE

clos:dwell m2,.1; dwell m3,.1; dwell m5,.1;

dwell m6,.1

Set the time to wait after opening a relay to 0.2 seconds for each module in

the scan list defined above.

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Appendix B: Examples

WRITE

open:dwell m2,.2; dwell m3,.2; dwell m5,.2;

dwell m6,.2

Set the number of times to sequence through the defined scan list to 3.

WRITE trigger:Sequence:count 3

Set the trigger source for the scan list to “immediate”. This programs the

Option 01 to generate an internal trigger after closing a channel in a scan list

and waiting for the close dwell (assigned to the module containing the

channel) to expire.

WRITE

trigger:sequence:source immediate

Enable the Operation Complete bit of the Standard Event Status register to

generate a VXI Request True interrupt to the commander of the Option 01

Module.

WRITE

*SRE 32

*ESE 1

Sequence through the scan list 3 times and set the Operation Complete bit in

the Standard Event Status register when finished.

WRITE

initiate:immediate

*OPC

After the Option 01 sequences through the scan list three times, it will

generate a VXI Request True interrupt to its commander. When the

commander of the Option 01 detects a Request True interrupt, check the

contents of the Option 01’s Status Byte register.

WRITE

READ

*STB?

096

This response indicates that bits 5 and 6 of the Status Byte register are set.

Bit 6 indicates that the Option 01 has generated a request true interrupt. Bit 5

indicates that the Operation Complete bit in the Standard Event Status

Read the Standard Event Status register contents.

WRITE

READ

WRITE

READ

*ESR?

001

*ESR?

000

Note that the second read of the Standard Event Status register is zero

because this register is cleared each time an *ESR? query is received.

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Appendix B: Examples

Check the contents of the Status Byte register.

WRITE

READ

*STB?

000

The *ESR? query caused the Operation Complete bit of the Standard Event

Status register to be cleared. This caused bit 5 of the Status Byte register to

be cleared, which caused bit 6 of the Status Byte register to be cleared.

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Appendix C: User Service

This appendix contains service-related information for the Option 01 that covers

the following topics:

Performance Verification

Preventive maintenance

Troubleshooting

User-replaceable parts

Performance Verification

Consult the User Manual of the module on which the Option 01 is mounted. You

may use the Functional Check procedure listed in the Getting Started section of

that manual to verify that the module is operating correctly. The instrument has

been fully tested and calibrated before leaving the factory.

If the self test indicates a failure, contact your Tektronix field office or represen-

tative for assistance.

Preventive Maintenance

You should perform inspection and cleaning as preventive maintenance.

Preventive maintenance, when done regularly, may prevent Option 01 malfunc-

tion and enhance reliability. Inspect and clean the Option 01 as often as

conditions require by following these steps:

1. Turn off power and remove the Option 01 from the VXIbus mainframe.

2. Remove loose dust on the outside of the instrument with a lint-free cloth.

3. Remove any remaining dirt with a lint-free cloth dampened with water or a

75% isopropyl alcohol solution. Do not use abrasive cleaners.

Troubleshooting

If you suspect a malfunction, first double check connections to and from the

Option 01. If the trouble persists, perform a self test.

If the self test indicates a failure, contact your Tektronix field office or represen-

tative for assistance.

C–1

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Appendix C: User Service

User-Replaceable Parts

Refer to Appendix D for replaceable parts information.

C–2

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Appendix D: Replaceable Parts

This section contains a list of the replaceable modules for the <instrument>. Use

this list to identify and order replacement parts.

Parts Ordering Information

Replacement parts are available through your local Tektronix field office or

representative.

Changes to Tektronix products are sometimes made to accommodate improved

components as they become available and to give you the benefit of the latest

improvements. Therefore, when ordering parts, it is important to include the

following information in your order.

Part number

Instrument type or model number

Instrument serial number

Instrument modification number, if applicable

If you order a part that has been replaced with a different or improved part, your

local Tektronix field office or representative will contact you concerning any

change in part number.

Change information, if any, is located at the rear of this manual.

Module Servicing

Modules can be serviced by selecting one of the following three options. Contact

your local Tektronix service center or representative for repair assistance.

Module Exchange. In some cases you may exchange your module for a reman-

ufactured module. These modules cost significantly less than new modules and

meet the same factory specifications. For more information about the module

exchange program, call 1-800-TEK-WIDE, extension 6630.

Module Repair and Return. You may ship your module to us for repair, after which

we will return it to you.

New Modules. You may purchase replacement modules in the same way as other

replacement parts.

D–1

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Appendix D: Replaceable Parts

Using the Replaceable Parts List

This section contains a list of the mechanical and/or electrical components that

are replaceable for the <instrument>. Use this list to identify and order replace-

ment parts. The following table describes each column in the parts list.

Parts List Column Descriptions

Column Column Name

Description

Figure & Index Number

Items in this section are referenced by figure and index numbers to the exploded view

illustrations that follow.

Tektronix Part Number

Serial Number

Use this part number when ordering replacement parts from Tektronix.

3 and 4

Column three indicates the serial number at which the part was first effective. Column four

indicates the serial number at which the part was discontinued. No entries indicates the part is

good for all serial numbers.

Qty

This indicates the quantity of parts used.

Name & Description

An item name is separated from the description by a colon (:). Because of space limitations, an

item name may sometimes appear as incomplete. Use the U.S. Federal Catalog handbook

H6-1 for further item name identification.

Mfr. Code

This indicates the code of the actual manufacturer of the part.

This indicates the actual manufacturer’s or vendor’s part number.

Mfr. Part Number

Abbreviations

Abbreviations conform to American National Standard ANSI Y1.1–1972.

Mfr. Code to Manufacturer

Cross Index

The table titled Manufacturers Cross Index shows codes, names, and addresses

of manufacturers or vendors of components listed in the parts list.

D–2

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Appendix D: Replaceable Parts

Manufacturers Cross Index

Mfr.

Code

Manufacturer

Address

City, State, Zip Code

80009

TEKTRONIX INC

14150 SW KARL BRAUN DR

PO BOX 500

BEAVERTON, OR 97077–0001

TK2548

XEROX CORPORATION

DIV OF XEROX CORPORATION

14181 SW MILLIKAN WAY

BEAVERTON, OR 97005

D–3

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Appendix D: Replaceable Parts

Replaceable Parts List

Fig. &

Tektronix

Serial No. Serial No.

Index

Part Number Effective

Discont’d

Qty Name & Description

Mfr. Code Mfr. Part Number

Number

070–9180–XX

070–9198–XX

MANUAL,TECH:USERS

80009

070–9180–01

070–9198–00

MANUAL,TECH:QUICK REFERENCE GUIDE,VXI

INTERFACE OPT 01

TK2548

163–0431–01

160–9792–00

IC,MEMORY:CMOS,EPROM,PRGM

(U31,REF. DESIG. PRINTED ON CKT. BRD.)

80009

163–0431–01

160–9792–00

IC,DIGITAL:CMOS,PRGM

(U45,REF. DESIG. PRINTED ON CKT. BRD.)

Figure D–1: Option 01 Exploded View

D–4

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Glossary and Index

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Glossary

The terms in this glossary are defined as used in the VXIbus System. Although

some of these terms may have different meanings in other systems, it is

important to use these definitions in VXIbus applications. Terms which apply

only to a particular instrument module are noted. Not all terms appear in every

manual.

Accessed Indicator

An amber LED indicator that lights when the module identity is selected by

the Resource Manager module, and flashes during any I/O operation for the

module.

ACFAIL*

A VMEbus backplane line that is asserted under these conditions: 1) by the

mainframe Power Supply when a power failure has occurred (either AC line

source or power supply malfunction), or 2) by the front panel ON/

STANDBY switch when switched to STANDBY.

Asynchronous Communication

Communications that occur outside the normal “command-response” cycle.

Such communications have higher priority than synchronous communica-

tion.

Backplane

The printed circuit board that is mounted in a VXIbus mainframe to provide

the interface between VXIbus modules and between those modules and the

external system.

Bus Arbitration

In the VMEbus interface, a system for resolving contention for service

among VMEbus Master devices on the VMEbus.

Bus Timer

A functional module that measures the duration of each data transfer on the

Data Transfer Bus (DTB) and terminates the DTB cycle if the duration is

excessive. Without the termination capability of this module, a Bus Master

attempt to transfer data to or from a non-existent Slave location could result

in an infinitely long wait for the Slave response.

Client

In shared memory protocol (SMP), that half of an SMP channel that does not

control the shared memory buffers.

CLK10

A 10 MHz, ±100 ppm, individually buffered (to each module slot),

differential ECL system clock that is sourced from Slot 0 and distributed to

Glossary–1

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Glossary

Slots 1–12 on P2. It is distributed to each module slot as a single source,

single destination signal with a matched delay of under 8 ns.

Commander

In the VXIbus interface, a device that controls another device (a servant). A

commander may be a servant of another commander.

Command

A directive to a device. There are three types of commands:

In Word Serial Protocol, a 16-bit imperative to a servant from its com-

mander.

In Shared Memory Protocol, a 16-bit imperative from a client to a server, or

vice versa.

In a Message, an ASCII-coded, multi-byte directive to any receiving device.

Communication Registers

In word serial protocol, a set of device registers that are accessible to the

commander of the device. Such registers are used for inter-device commu-

nications, and are required on all VXIbus message-based devices.

Configuration Registers

A set of registers that allow the system to identify a (module) device type,

model, manufacturer, address space, and memory requirements. In order to

support automatic system and memory configuration, the VXIbus standard

specifies that all VXIbus devices have a set of such registers, all accessible

from P1 on the VMEbus.

C-Size Card

A VXIbus instrument module that is 340.0 mm × 233.4 mm × 30.48 mm

(13.4 in. × 9.2 in × 1.2 in).

Custom Device

A special-purpose VXIbus device that has configuration registers so as to be

identified by the system and to allow for definition of future device types to

support further levels of compatibility.

Data Transfer Bus

One of four buses on the VMEbus backplane. The Data Transfer Bus allows

Bus Masters to direct the transfer of binary data between Masters and Slaves.

DC SUPPLIES Indicator

A red LED indicator that illuminates when a DC power fault is detected on

the backplane.

Device Specific Protocol

A protocol for communication with a device that is not defined in the

VXIbus specification.

Glossary–2

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Glossary

D-Size Card

A VXIbus instrument module that is 340.0 × 366.7 mm × 30.48 mm (13.4 ×

14.4 in × 1.2 in).

DTB

See Data Transfer Bus.

DTB Arbiter

A functional module that accepts bus requests from Requester modules and

grants control of the DTB to one Requester at a time.

DUT

Device Under Test.

ECLTRG

Six single-ended ECL trigger lines (two on P2 and four on P3) that function

as inter-module timing resources, and that are bussed across the VXIbus

subsystem backplane. Any module, including the Slot 0 module, may drive

and receive information from these lines. These lines have an impedance of

50 W; the asserted state is logical High.

Embedded Address

An address in a communications protocol in which the destination of the

message is included in the message.

ESTST

Extended STart/STop protocol; used to synchronize VXIbus modules.

Extended Self Test

Any self test or diagnostic power-on routine that executes after the initial

kernel self test program.

External System Controller

The host computer or other external controller that exerts overall control

over VXIbus operations.

FAILED Indicator

A red LED indicator that lights when a device on the VXIbus has detected an

internal fault. This might result in the assertion of the SYSFAIL* line.

IACK Daisy Chain Driver

The circuit that drives the VMEbus Interrupt Acknowledge daisy chain line

that runs continuously through all installed modules or through jumpers

across the backplane.

ID-ROM

An NVRAM storage area that provides for non-volatile storage of diagnostic

data.

Instrument Module

A plug-in printed circuit board, with associated components and shields, that

Glossary–3

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Glossary

may be installed in a VXIbus mainframe. An instrument module may

contain more than one device. Also, one device may require more than one

instrument module.

Interface Device

A VXIbus device that provides one or more interfaces to external equipment.

Interrupt Handler

A functional module that detects interrupt requests generated by Interrupters

and responds to those requests by requesting status and identity information.

Interrupter

A device capable of asserting VMEbus interrupts and performing the

interrupt acknowledge sequence.

IRQ

The Interrupt ReQuest signal, which is the VMEbus interrupt line that is

asserted by an Interrupter to signify to the controller that a device on the bus

requires service by the controller.

Local Bus

A daisy-chained bus that connects adjacent VXIbus slots.

Local Controller

The instrument module that performs system control and external interface

functions for the instrument modules in a VXIbus mainframe or several

mainframes. See Resource Manager.

Local Processor

The processor on an instrument module.

Logical Address

The smallest functional unit recognized by a VXIbus system. It is often used

to identify a particular module.

Mainframe

Card Cage. For example, the Tektronix VX1410 Intelliframe, an operable

housing that includes 13 C-size VXIbus instrument module slots.

Memory Device

A storage element (such as bubble memory, RAM, and ROM) that has

configuration registers and memory attributes (such as type and access time).

Message

A series of data bytes that are treated as a single communication, with a well

defined terminator and message body.

Message Based Device

A VXIbus device that supports VXI configuration and communication

registers. Such devices support the word serial protocol, and possibly other

message-based protocols.

Glossary–4

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Glossary

MODID Lines

Module/system identity lines.

Physical Address

The address assigned to a backplane slot during an access.

Power Monitor

A device that monitors backplane power and reports fault conditions.

The top-most backplane connector for a given module slot in a vertical

mainframe. The left-most backplane connector for a given slot in a horizon-

tal mainframe.

The bottom backplane connector for a given module slot in a vertical C-size

mainframe; or the middle backplane connector for a given module slot in a

vertical D-size mainframe such as the VX1500.

Query

A form of command that allows for inquiry to obtain status or data.

READY Indicator

A green LED indicator that lights when the power-on diagnostic routines

have been completed successfully. An internal failure or failure of +5 V

power will extinguish this indicator.

A VXIbus device that supports VXI register maps, but not high level

VXIbus communication protocols; includes devices that are register-based

servant elements.

Requester

A functional module that resides on the same module as a Master or

Interrupt Handler and requests use of the DTB whenever its Master or

Interrupt Handler requires it.

Resource Manager

A VXIbus device that provides configuration management services such as

address map configuration, determining system hierarchy, allocating shared

system resources, performing system self test diagnostics, and initializing

system commanders.

Self Calibration

A routine that verifies the basic calibration of the instrument module circuits,

and adjusts this calibration to compensate for short- and long-term variables.

Self Test

A set of routines that determine if the instrument module circuits will

Glossary–5

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Glossary

perform according to a given set of standards. A self test routine is per-

formed upon power-on.

Servant

A VXIbus message-based device that is controlled by a commander.

Server

A shared memory device that controls the shared memory buffers used in a

given Shared Memory Protocol channel.

Shared Memory Protocol

A communications protocol that uses a block of memory that is accessible to

both client and server. The memory block operates as a message buffer for

communications.

Slot 0 Controller

See Slot 0 Module. Also see Resource Manager.

Slot 0 Module

A VXIbus device that provides the minimum VXIbus slot 0 services to slots

1 through 12 (CLK10 and the module identity lines), but that may provide

other services such as CLK100, SYNC100, STARBUS, and trigger control.

SMP

See Shared Memory Protocol.

STARX

Two (2) bi-directional, 50 W, differential ECL lines that provide for

inter-module asynchronous communication. These pairs of timed and

matched delay lines connect slot 0 and each of slots 1 through 12 in a

mainframe. The delay between slots is less than 5 ns, and the lines are well

matched for timing skew.

STARY

Two (2) bi-directional, 50 W, differential ECL lines that provide for

inter-module asynchronous communication. These pairs of timed and

matched delay lines connect slot 0 and each of slots 1 through 12 in a

mainframe. The delay between slots is less than 5 ns, and the lines are well

matched for timing skew.

STST

STart/STop protocol; used to synchronize modules.

SYNC100

A Slot 0 signal that is used to synchronize multiple devices with respect to a

given rising edge of CLK100. These signals are individually buffered and

matched to less than 2 ns of skew.

Synchronous Communications

A communications system that follows the “command-response” cycle

Glossary–6

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model. In this model, a device issues a command to another device; the

second device executes the command; then returns a response. Synchronous

commands are executed in the order received.

SYSFAIL*

A signal line on the VMEbus that is used to indicate a failure by a device.

The device that fails asserts this line.

System Clock Driver

A functional module that provides a 16 MHz timing signal on the Utility

Bus.

System Hierarchy

The tree structure of the commander/servant relationships of all devices in

the system at a given time. In the VXIbus structure, each servant has a

commander. A commander may also have a commander.

Test Monitor

An executive routine that is responsible for executing the self tests, storing

any errors in the ID-ROM, and reporting such errors to the Resource

Manager.

Test Program

A program, executed on the system controller, that controls the execution of

tests within the test system.

Test System

A collection of hardware and software modules that operate in concert to test

a target DUT.

TTLTRG

Open collector TTL lines used for inter-module timing and communication.

VXIbus Subsystem

One mainframe with modules installed. The installed modules include one

module that performs slot 0 functions and a given complement of instrument

modules. The subsystem may also include a Resource Manager.

Word Serial Protocol

A VXIbus word oriented, bi-directional, serial protocol for communications

between message-based devices (that is, devices that include communication

registers in addition to configuration registers).

Word Serial Communications

Inter-device communications using the Word Serial Protocol.

WSP

See Word Serial Protocol.

10-MHz Clock

A 10 MHz, ±100 ppm timing reference. Also see CLK10.

Glossary–7

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Glossary

488-To-VXIbus Interface

A message based device that provides for communication between the

IEEE-488 bus and VXIbus instrument modules.

Glossary–8

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Index

IEEE 488.2 Commands

*CLS, 3–59

Accessories, 1–4

ARM, 3–17

*ESE, 3–59

*ESR?, 3–59

*IDN?, 3–60

*OPC, 3–61

*OPC?, 3–61

*RST, 3–61

*SRE, 3–62

*SRE?, 3–62

*STB?, 3–62

*TST?, 3–64, 3–65

*WAI, 3–65

*CLS, 3–59

command, 3–19, 3–24, 3–28, 3–29, 3–32, 3–36, 3–41,

3–42, 3–43, 3–47, 3–51, 3–55

Command Descriptions

ARM, 3–17

command, 3–19, 3–24, 3–28, 3–29, 3–32, 3–36,

3–41, 3–42, 3–43, 3–47, 3–51, 3–55

command error messages, 4–6

Command Syntax, 3–1

*ESE?, 3–59

IEEE-488 Address, 1–5

Syntax Example, 3–3

Commands. See individual command names

Configuration Registers, 2–4

Maintenance, Preventive, C–1

Message, Handling, 4–1

messages. See error messages

device dependent error messages, 4–8

Normal Transfer Mode, 2–2

error messages, 4–6

command errors, 4–6

*OPC, 3–61

device dependent errors, 4–8

execution errors, 4–7

*ESE, 3–59, 4–4

OPC bit, 4–3

*OPC?, 3–61

Output queue, 4–4

*ESE?, 3–59, 4–4

*ESR?, 3–59, 4–3

Event handling, 4–1

Event Reporting Process, 4–5

Event Reporting System, 4–1

Event Status Enable Register, 4–4

execution error messages, 4–7

Performance verification, C–1

Programming, B–1

Queue

Fast Handshake Mode, 2–3

Fuses, 1–3

Output, 4–4

System Error and Event, 4–4

*IDN?, 3–60

Index–1

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Index

Status and Event Reporting System, 4–1

Status Byte Register, 4–1

*STB?, 3–62, 4–1

Event Status Enable, 4–4

Switches, 1–4

Service Request Enable, 4–2

Standard Event Status, 4–3

Status Byte, 4–1

Logical Address Switches, 1–4, 1–6

SYSFAIL*, 1–11

System Error and Event queue, 4–4

SYSTem:ERROr?, 4–4

Replaceable Parts, D-1

*RST, 3–61

Troubleshooting, C–1

*TST?, 3–64, 3–65

Service Request Enable Register, 4–2

Specifications, A–1

*SRE, 3–62, 4–2

*SRE?, 3–62, 4–2

Standard Event Status Register, 4–3

Status, 4–1

*WAI, 3–65

Status and Event Reporting Process, 4–5

Index–2

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