HP Hewlett Packard E1366A User Manual

Contents  
HP E1366A/67A RF Multiplexers User’s Manual  
HP E1366A/67A RF Multiplexers User’s Manual Contents  
1
HP E1366A/67A RF Multiplexers User’s Manual Contents  
3
Notes  
4
HP E1366A/67A RF Multiplexers User’s Manual Contents  
Certification  
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HP E1366A & E1367A RF Multiplexer Modules User’s Manual  
Edition 3  
Copyright © 1995 Hewlett-Packard Company. All Rights Reserved.  
HP E1366A & E1367A RF Multiplexer Modules User’s Manual  
5
 
Documentation History  
All Editions and Updates of this manual and their creation date are listed below. The first Edition of the manual is Edition 1. The Edi-  
tion number increments by 1 whenever the manual is revised. Updates, which are issued between Editions, contain replacement pages  
to correct or add additional information to the current Edition of the manual. Whenever a new Edition is created, it will contain all of  
the Update information for the previous Edition. Each new Edition or Update also includes a revised copy of this documentation his-  
tory page.  
Edition 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . September 1989  
Edition 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . March 1993  
Edition 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . December 1995  
Safety Symbols  
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manual for specific WARNING or CAU-  
TION information to avoid personal injury  
or damage to the product.  
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Indicates the field wiring terminal that must  
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Calls attention to a procedure, practice, or  
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WARNING  
CAUTION  
Calls attention to a procedure, practice, or con-  
dition that could possibly cause damage to  
equipment or permanent loss of data.  
Frame or chassis ground terminal—typi-  
cally connects to the equipment’s metal  
frame.  
or  
WARNINGS  
The following general safety precautions must be observed during all phases of operation, service, and repair of this product.  
Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design,  
manufacture, and intended use of the product. Hewlett-Packard Company assumes no liability for the customer’s failure to  
comply with these requirements.  
Ground the equipment: For Safety Class 1 equipment (equipment having a protective earth terminal), an uninterruptible safety earth  
ground must be provided from the mains power source to the product input wiring terminals or supplied power cable.  
DO NOT operate the product in an explosive atmosphere or in the presence of flammable gases or fumes.  
For continued protection against fire, replace the line fuse(s) only with fuse(s) of the same voltage and current rating and type.  
DO NOT use repaired fuses or short-circuited fuse holders.  
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of covers or shields are for use by service-trained personnel only. Under certain conditions, dangerous voltages may exist even with the  
equipment switched off. To avoid dangerous electrical shock, DO NOT perform procedures involving cover or shield removal unless  
you are qualified to do so.  
DO NOT operate damaged equipment: Whenever it is possible that the safety protection features built into this product have been im-  
paired, either through physical damage, excessive moisture, or any other reason, REMOVE POWER and do not use the product until  
safe operation can be verified by service-trained personnel. If necessary, return the product to a Hewlett-Packard Sales and Service Of-  
fice for service and repair to ensure that safety features are maintained.  
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6
HP E1366A & E1367A RF Multiplexer Modules User’s Manual  
 
Declaration of Conformity  
according to ISO/IEC Guide 22 and EN 45014  
Manufacturer’s Name:  
Hewlett-Packard Company  
Loveland Manufacturing Center  
Manufacturer’s Address:  
815 14th Street S.W.  
Loveland, Colorado 80537  
declares, that the product:  
Product Name:  
Model Number:  
Product Options:  
RF Multiplexer  
HP E1366A/E1367A  
All  
conforms to the following Product Specifications:  
Safety:  
IEC 1010-1 (1990) Incl. Amend 1 (1992)/EN61010-1 (1993)  
CSA C22.2 #1010.1 (1992)  
UL 1244  
EMC:  
CISPR 11:1990/EN55011 (1991): Group1, Class A  
IEC 801-2:1991/EN50082-1 (1992): 4kV CD, 8kV AD  
IEC 801-3:1984/EN50082-1 (1992): 3 V/m  
IEC 801-4:1988/EN50082-1 (1992): 1kV Power Line  
.5kV Signal Lines  
Supplementary Information: The product herewith complies with the requirements of the Low Voltage Directive  
73/23/EEC and the EMC Directive 89/336/EEC (inclusive 93/68/EEC) and carries the "CE" mark accordingly.  
Tested in a typical HP B-size mainframe.  
December 5, 1995  
Jim White, QA Manager  
European contact: Your local Hewlett-Packard Sales and Service Office or Hewlett-Packard GmbH, Department  
HQ-TRE, Herrenberger Straße 130, D-71034 Böblingen, Germany (FAX +49-7031-143143).  
HP E1366A & E1367A RF Multiplexer Modules User’s Manual  
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Notes  
8
HP E1366A & E1367A RF Multiplexer Modules User’s Manual  
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10 HP E1366A & E1367A RF Multiplexer Module User’s Manual  
Chapter 1  
Getting Started with the  
HP E1366A/E1367A RF Multiplexers  
Using This Chapter  
This chapter includes an RF multiplexer’s description, addressing  
guidelines, and an example to check initial operation. Chapter contents are:  
Multiplexer Module Description . . . . . . . . . . . . . . . . . . . . . Page 11  
Programming the Multiplexer Module. . . . . . . . . . . . . . . . . Page 13  
Initial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 15  
Multiplexer Module Description  
The HP E1366A 50RF Multiplexer (2 x 4:1) and the HP E1367A 75RF  
Multiplexer (2 x 4:1) are VXIbus and VMEbus B-size register-based  
products which provide bidirectional switching and scanning for user inputs  
and outputs. The multiplexers can operate in a B-size VXIbus or VMEbus  
mainframe or (with an adapter) in a C-size VXIbus mainframe.  
For the RF multiplexers, switching consists of connecting a channel to its  
common terminal. Scanning consists of connecting a series of channels  
(one at a time) to the appropriate common terminal.  
Basic Operation The multiplexers consist of two banks of channels (bank 0 and bank 1) to  
form two 4:1 multiplexers. Bank 0 includes channels 00 through 03 and  
com 00. Bank 1 includes channels 10 through 13 and com 10. Se`e Figure  
1-1 for a simplified switching diagram.  
Each channel is switched (connected to its common) by closing the  
appropriate (nonlatching) relays. Channels 00 through 03 can be switched  
to com 00, and channels 10 through 13 can be switched to com 10. Only  
one channel in each bank can be connected to its common at a time.  
User inputs and outputs to each channel are made through BNC connectors.  
When open (disconnected from common), each channel is terminated in its  
characteristic impedance (50for the E1366A, 75for the E1367A).  
A termination resistor (50for the HP E1366A or 75for the HP E1367A)  
is mounted on each channel, but can be removed as desired. At power-on or  
reset, all channels are open and terminated in their characteristic impedance,  
and both commons are open.  
Chapter 1  
Getting Started with the HP E1366A/E1367A RF Multiplexers 11  
 
Figure 1-1. Multiplexers Switching Diagram  
12 Getting Started with the HP E1366A/E1367A RF Multiplexers  
Chapter 1  
 
Typical The multiplexer relays are configured in a “ tree” structure which provides  
high isolation and low VSWR (voltage standing wave ratio). Each channel  
can switch user inputs up to 42 Vdc or 42 Vac peak. User input frequencies  
to the multiplexers can be from dc to 1.3 GHz.  
Configuration  
The multiplexers can be configured for several arrangements, such as  
standard, tree, or matrix. You can use single scanning, multiple scanning,  
or continuous scanning for any configuration.  
For a SCPI (Standard Commands for Programmable Instruments)  
environment, one or more multiplexers can be defined as a switchbox  
instrument. For a switchbox instrument, all multiplexer channels within the  
instrument can be addressed using a single interface address.  
Programming the Multiplexer Module  
To program the RF multiplexers using SCPI, you must select the controller  
language, interface address, and SCPI commands to be used. Guidelines to  
select SCPI commands for the RF multiplexers follow. See the appropriate  
HP B-size or C-size configuration guide for interface addressing and  
controller language information.  
Note  
This discussion applies to SCPI programming. See Appendix B,  
RF Multiplexers Registers, for information on multiplexer registers.  
Specifying SCPI To address specific channels within an RF multiplexer, you must specify the  
SCPI command and multiplexer channel address. For the RF multiplexers,  
Commands  
use CLOSe <channel_list> to switch (close) channels and use  
OPEN<channel_list> to disconnect channels. Use SCAN <channel_list> to  
scan (sequentially close) multiplexer channels.  
Multiplexer Channel For the RF multiplexers, the channel address (channel_list) is in the form:  
Address  
(@ccnn) for a single channel  
(@ccnn,ccnn) for multiple channels  
(@ccnn:ccnn) for sequential channels  
(@ccnn:ccnn,ccnn:ccnn) for groups of sequential channels  
or any combination of the above  
where "cc" is the multiplexer card number (01-99) and "nn" is the channel  
numbers (00-03 and 10-13).  
Chapter 1  
Getting Started with the HP E1366A/E1367A RF Multiplexers 13  
 
Multiplexer Card The multiplexer card number depends on the switchbox configuration  
(single-module or multiple-module) set for the multiplexers. (Leading  
zeroes can be ignored for the card number.) For a single-module switchbox,  
the card number is always 01.  
Numbers  
For a multiple-module switchbox, the card numbers are 01, 02,...,n. The  
switch module with the lowest logical address is always card number 01.  
The card number with the next successive logical address is card number  
02, and so on. See the HP B-size configuration guide for a definition of  
logical addresses.  
Example: Multiple-Module Switchbox Card Numbers  
Assume the three multiplexers in the following figure form a  
multiple-multiplexer switchbox instrument with multiplexer logical  
addresses of 120, 121, and 122. Since card number 01 is assigned to the  
module with the lowest logical address, etc., the card numbers are as shown.  
Figure 1-2. Multiple-Multiplexer Switchbox Instrument  
Multiplexer Channel RF multiplexer channel numbers are 00 through 03 and 10 through 13.  
The channels can be addressed using channel numbers or channel ranges.  
For a single-module switchbox, channel ranges can span across the two  
channel banks. For multiple-module switchboxes, channel ranges can  
span across the channels of all modules.  
Numbers  
14 Getting Started with the HP E1366A/E1367A RF Multiplexers  
Chapter 1  
 
Use commas (,) to form a channel list or use a colon (:) to form a channel  
range. Only valid channels can be accessed in a channel list or channel  
range. Also, the channel list or channel range must be from a lower channel  
number to a higher channel number. For example, SCAN (@100:213) is  
acceptable, but SCAN (@213:100) generates an error.  
Example: RF Multiplexer Channel Lists/Ranges  
Channel Lists:  
!Close channels 00 and 12 on card 01  
CLOS (@100,112)  
OPEN (@203,210)  
!Open channels 03 and 10 on card 02  
Channel Ranges:  
OPEN (@100:113)  
SCAN (@100:213)  
!Open all channels on card 01  
!Scan all channels on cards 01 and 02  
Initial Operation  
An example program follows which uses Hewlett-Packard BASIC and SCPI  
language to get you started using the RF multiplexers. The computer used in  
the example is an HP 9000 Series 200/300 (or equivalent) controller with HP  
BASIC as the program language. The computer interfaces to the mainframe  
*
using the Hewlett-Packard Interface Bus (HP-IB) .  
This program closes channel 02 of an RF multiplexer at logical address 120  
(secondary address = 120/8 = 15) and queries the channel closure state. The  
result is returned to the controller and displayed (1 = channel closed, 0 =  
channel open). See the HP B-size configuration guide for information on  
addressing.  
Example: Close Multiplexer Channel  
! Close channel 02  
OUTPUT 70915;"CLOS (@102)"  
OUTPUT 70915;"CLOS? (@102)"  
ENTER 70915;Value  
PRINT Value  
! Query channel 02 state  
! Enter result into Value  
! Display result  
END  
*
HP-IB is Hewlett-Packard’s implementation of IEEE Std 488.1-1984  
Chapter 1  
Getting Started with the HP E1366A/E1367A RF Multiplexers 15  
 
Notes  
16 Getting Started with the HP E1366A/E1367A RF Multiplexers  
Chapter 1  
Chapter 2  
Configuring the HP E1366A/E1367A  
RF Multiplexers  
Using This Chapter  
This chapter shows how to make user connections to the RF multiplexers  
and how to configure the multiplexer modules. Chapter contents are:  
Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 17  
Connecting User Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 18  
Typical Multiplexer Configurations . . . . . . . . . . . . . . . . . . . Page 20  
Changing Multiplexer Components. . . . . . . . . . . . . . . . . . . . Page 23  
Warnings and Cautions  
Warning  
SHOCK HAZARD. Only qualified, service-trained personnel  
who are aware of the hazards involved should install, configure,  
or remove the RF multiplexers. Remove all power sources from  
the mainframe and installed modules before installing or  
removing a module.  
Warning  
CHANNEL WIRING INSULATION. All channels that have a  
common connection must be insulated so that the user is  
protected from electrical shock in the event that two or more  
channels are connected together. This means wiring for all  
channels must be insulated as though each channel carries the  
voltage of the highest voltage channel.  
Caution  
MAXIMUM VOLTAGE/CURRENT. Maximum voltage between  
any RF multiplexer center conductor or shield to any other  
center conductor, shield, or chassis ground is 42 Vdc or 42 Vac  
peak. Maximum current per channel or common is 1 A dc or  
1 A ac RMS. Maximum switching power is 24 W or 24 VA per  
channel or common. Maximum power per resistive termination  
is 1 W or 1 VA. Exceeding any limit may damage the module.  
Chapter 2  
Configuring the HP E1366A/E1367A RF Multiplexers 17  
 
Caution  
CENTER CONDUCTOR MAY SHORT TO SHIELD. Each  
channel’s center conductor may momentarily short to the  
shield when the channel is opened or closed. Use only  
resistive (50or 75) or current-limited (<1 A) inputs with less  
than 0.1 µF total capacitance.  
Caution  
STATIC-SENSITIVE DEVICE. Use anti-static procedures when  
removing, configuring, and installing a module. The  
multiplexer modules are susceptible to static discharges. Do  
not install a multiplexer without its metal shield attached.  
Connecting User Inputs  
User inputs to the RF multiplexers are made through user-supplied male BNC  
connectors to the female BNC connectors on the modules. Figure 2-1 shows  
the multiplexer female BNC connectors and associated channel numbers.  
Figure 2-1. BNC Connector Locations  
18 Configuring the HP E1366A/E1367A RF Multiplexers  
Chapter 2  
 
Some guidelines for user input cabling are:  
For best high-frequency performance, user cabling should have at  
least two braided shields or one braid and a foil wrap.  
Always use shielded coaxial cables with the characteristic  
impedance of the multiplexer used (50or 75). Keep cables as  
short as possible, especially in high-frequency circuits or pulse  
circuits where a rise/fall time of <50 nsec is critical.  
Long cables can add delay time which can cause timing problems.  
All test equipment, such as counters, spectrum analyzers, and  
oscilloscopes, must be terminated in the characteristic impedance to  
minimize reflection loss.  
To maintain low dc offset voltages, cables should have copper center  
conductors, not copper-clad steel. RG-233/U cable is recommended.  
Table 2-1 lists Hewlett-Packard BNCcables which meet these  
guidelines.  
Table 2-1. Hewlett-Packard BNC Cables  
Type  
Length  
Part Number  
50 coaxial  
30 cm (12 in)  
61 cm (24 in)  
122 cm (48 in)  
8120-1838  
8120-1839  
8120-1840  
75 coaxial  
30 cm (12 in)  
61 cm (24 in)  
5062-6452  
5063-0061  
Chapter 2  
Configuring the HP E1366A/E1367A RF Multiplexers 19  
 
Typical Multiplexer Configurations  
Typical RF multiplexer configurations are:  
Standard configuration (2 x 4:1 multiplexer)  
Tree configuration (1 x 12:1 multiplexer)  
Matrix-type configuration (4:1 to 4:1 multiplexer)  
Standard Figure 2-2 shows the standard configuration (2 x 4:1) for the RF  
multiplexers. With this configuration, you can switch channels 00-03 to  
com 00 and switch channels 10-13 to com 10. One channel per bank can be  
connected to its common at a time.  
Configuration  
Figure 2-2. Typical Standard Configuration  
20 Configuring the HP E1366A/E1367A RF Multiplexers  
Chapter 2  
 
Tree Configuration Figure 2-3 shows a typical tree configuration which uses two RF  
multiplexers to provide a 1 x 12:1 multiplexer. This configuration provides  
isolation of test points while maintaining characteristic impedance. With  
tree configuration, signal delay time is more than doubled since the signal  
must pass through two channel banks plus extra cabling. Keep cables as  
short as possible, especially between channel banks, to minimize delay.  
Figure 2-3. Typical Tree Configuration  
Chapter 2  
Configuring the HP E1366A/E1367A RF Multiplexers 21  
 
Matrix-Type Figure 2-4 shows the two banks of an RF multiplexer connected to form a  
matrix-type arrangement. This configuration provides a way to connect  
Configuration  
multiple devices under test (DUTs) to multiple test instruments. With this  
configuration, only one channel in bank 0 (one row) can be connected to  
one channel in bank 1 (one column) at a time.  
Figure 2-4. Typical Matrix-Type Configuration  
22 Configuring the HP E1366A/E1367A RF Multiplexers  
Chapter 2  
 
Changing Multiplexer Components  
As required, you can change the logical address switch setting, replace the  
protection fuses, change the interrupt priority jumper setting, or remove  
channel termination resistors. See Figure 2-5 for locations.  
Figure 2-5. RF Multiplexer Component Locations  
Chapter 2  
Configuring the HP E1366A/E1367A RF Multiplexers 23  
 
Notes  
24 Configuring the HP E1366A/E1367A RF Multiplexers  
Chapter 2  
Chapter 3  
Using the HP E1366A/E1367A  
RF Multiplexer Module  
Using This Chapter  
This chapter provides examples to switch multiplexer channels and to scan  
multiplexer channels. As required see Chapter 4, Understanding the RF  
Multiplexers, to modify the examples for your application. Also, see  
Chapter 5, RF Multiplexers Command Reference, for command  
information. Chapter contents are:  
Multiplexer Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 25  
Switching Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 25  
Scanning Channels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 29  
Multiplexer Commands  
Table 3-1. RF Multiplexer Commands Used in Chapter 3  
Command  
Description  
Close channels  
Open channels  
CLOS <channel_list>  
OPEN <channel_list>  
TRIG:SOUR BUS |EXT |HOLD |IMM  
SCAN <channel_list>  
INIT  
Set scanning trigger source  
Define channels to be scanned  
Start scan, close first channel  
Switching Channels  
Switching channels consists of closing or opening a channel. Close  
channels 00-03 by connecting a channel to com 00 or close channels  
10-13 by connecting a channel to com 10. Only one channel per  
bank can be closed at a time.  
Use CLOSe <channel_list> to close channels use  
OPEN <channel_list> to open channels. channel_list has the form  
(@ccnn) for a single channel, (@ccnn,ccnn,...) for two or more  
channels, or (@ccnn:ccnn) for a set of channels where cc = card  
number, nn = channel number.  
Switching configurations include standard, matrix, and tree. See  
Chapter 2 for configuration details.  
Chapter 3  
Using the HP E1366A/E1367A RF Multiplexer Module 25  
 
Example: Standard This example connects channel 02 to com 00 of an RF multiplexer in  
standard configuration. The multiplexer is defined as a single-multiplexer  
switchbox instrument. See the following figure for typical user  
connections. To connect channel 02 to com 00, execute:  
Switching  
CLOS (@102)  
! Connect channel 02 to com 00.  
1 is the card number and 02 is the  
channel number.  
To open the channel, use OPEN (@102).  
Figure 3-1. Standard Switching  
26 Using the HP E1366A/E1367A RF Multiplexer Module  
Chapter 3  
 
Example: Tree This example uses two RF multiplexers in a tree configuration to connect  
com 10 of multiplexer #1 with channel 12 of multiplexer #2. The two  
Switching  
multiplexers form a multiple-multiplexer switchbox instrument with  
multiplexer #1 as card 01 and multiplexer #2 as card 02. See the following  
figure for typical user connections. To make this connection, execute:  
CLOS (@112,212)  
! Connect com 10 of multiplexer #1  
to channel 12 of multiplexer #2.  
To open the channels, use OPEN (@112,212).  
Figure 3-2. Tree Switching  
Chapter 3  
Using the HP E1366A/E1367A RF Multiplexer Module 27  
 
Example: This example connects channel 13 to channel 01 of an RF multiplexer in  
matrix-type configuration. The multiplexer is defined as a single-module  
switchbox instrument. See the following figure for typical user  
connections.  
Matrix-Type  
Switching  
To connect channel 13 to channel 01, execute:  
CLOS (@101,113)  
! Connect channel 01 to channel 13.  
1 is the card number and 01, 13  
are channel numbers.  
Figure 3-3. Matrix-Type Switching  
To open the channels, use OPEN (@101,113).  
Switching Query Channel States. Use CLOSe? <channel_list> or  
OPEN? <channel_list> to query the channel states (open/closed). CLOSe?  
returns a 1 for channels closed, 0 for channels open. OPEN? returns a 0 for  
channels closed, 1 for channels open. (Commands do not account for relay  
Channels  
Comments  
hardware failures.)  
Channel Closure Order. CLOSe <channel_list> can be used to close  
multiple channels (one at a time). However, the sequence in which multiple  
channels are closed with a single command is not guaranteed.  
28 Using the HP E1366A/E1367A RF Multiplexer Module  
Chapter 3  
 
Scanning Channels  
Scanning channels consists of closing a set of channels, one channel  
at a time. You can scan any combination of channels for a  
single-multiplexer or multiple-multiplexer switchbox.  
Single, multiple, or continuous scanning modes are available. Any  
switching configuration can be used for scanning. See Chapter 4.  
Example: Scanning This example shows one way to synchronize instrument measurements of DUTs  
with RF multiplexer channel closures. For measurement synchronization, the HP  
E1300A/E1301A Trig Out BNC port is connected to the instrument External  
Trigger In port. See the following figure for typical user connections.  
Using Trig Out Port  
For this example, the mainframe and instrument are connected via HP-IB  
with mainframe address of 709 and instrument address of 722. The RF  
multiplexer is at logical address 120 (secondary address 15). (You must add  
required instrument commands to line 10.)  
10 OUTPUT 722;"TRIG EXT;...."  
20 OUTPUT 70915;"OUTP ON"  
! Ext triggering  
! Enable Trig Out  
30 OUTPUT 70915;"TRIG:SOUR BUS" ! Bus triggering  
40 OUTPUT 70915;"SCAN (@100:103)" ! Scan channels  
50 OUTPUT 70915;"INIT"  
60 FOR I=1 TO 4  
70 ENTER 722;A  
80 PRINT A  
! Enable scan  
! Start loop  
! Enter result  
! Display result  
! Advance scan  
! Increment count  
90 TRIGGER 70915  
100 NEXT I  
110 END  
Figure 3-4. Scanning Using Trig Out Port  
Chapter 3  
Using the HP E1366A/E1367A RF Multiplexer Module 29  
 
Scanning Channels Scan List Can Extend Across Boundaries. For multiple-multiplexer  
switchbox instruments, the scan list can extend across multiplexer  
boundaries. For example, for a two-multiplexer switchbox instrument,  
Comments  
SCAN (@100:213) will scan all channels in both multiplexers.  
Setting Multiple/Continuous Scans. Use ARM:COUN <number> to set  
from 1 to 32767 scans through the scan list. Use INIT:CONT ON to set  
continuous scanning. See Chapter 4.  
30 Using the HP E1366A/E1367A RF Multiplexer Module  
Chapter 3  
 
Chapter 4  
Understanding the HP E1366A/E1367A  
RF Multiplexers  
Using This Chapter  
This chapter explains techniques to scan RF multiplexer channels and  
shows how to use the Scan Complete bit. The chapter contents are:  
Scanning Channels Commands . . . . . . . . . . . . . . . . . . . . . . Page 31  
Using Scanning Trigger Sources . . . . . . . . . . . . . . . . . . . . . Page 31  
Scanning with External Instruments. . . . . . . . . . . . . . . . . . . Page 31  
Using the Scan Complete Bit . . . . . . . . . . . . . . . . . . . . . . . . Page 36  
Scanning Channels Commands  
Scanning RF multiplexer channels consists of closing a set of channels, one  
at a time. Single scan, multiple (2 to 32767) scans, or continuous scanning  
modes are available. See Figure 4-1 for scanning commands.  
Using Scanning Trigger Sources  
The TRIG:SOUR command specifies the source to advance the scan. You  
can use the TRIG command to advance the scan when TRIG:SOUR BUS or  
TRIG:SOUR HOLD is set. The OUTP command can be used to enable the  
HP E1300A/E1301A Trig Out or the HP E1405A/E1406A port. Figure 4-2  
shows scanning trigger sources.  
Scanning with External Instruments  
Scanning RF multiplexer channels has the same effect as executing multiple  
CLOSe commands. Thus, scanning is useful when the outputs7from a  
number of DUTs are to be measured with an instrument. Two examples  
using HP BASIC programming language follow.  
Chapter 4  
Understanding the HP E1366A/E1367A RF Multiplexers 31  
 
Sets Number of Scanning Cycles  
ARM:COUN<number> sets 1 to 32767 scans  
through the channel list per INIT command.  
Default is one scanning cycle.  
Selects the Trigger Source  
TRIG:SOUR defines the trigger source to  
advance the scan. Default is TRIG:SOUR IMM.  
TRIG:SOUR? queries the current trigger source.  
Sources are:  
BUS = *TRG via HP-IB interface  
EXT = Event In connector  
HOLD = Hold triggering  
IMM = Automatic advance  
Selects Continuous Scanning Cycles  
Use INIT:CONT ON or INIT:CONT 1 to enable  
continuous scanning cycles. Default made is  
fixed number of scans, with number set by  
ARM:COUN<number>.  
Selects Scan Mode  
SCAN:MODE sets the RF multiplexers for  
NONE, VOLT, RES, or FRES. NONE, VOLT,  
and RES have no effect on RF multiplexer  
operation. FRES sets "paired-channel"  
scanning.  
Selects the Scan List  
SCAN<channel_list> defines channels to  
be scanned using the trigger source set by  
the TRIG:SOUR command.  
Enables Scanning  
INIT starts scanning for any trigger source  
and closes the first channel in the channel list.  
Advances the Scan  
TRIG can be used to advance the scan for  
TRIG:SOUR BUS or TRIG:SOUR HOLD. The  
command is not functional when TRIG:SOUR IMM  
or TRIG:SOUR EXT is set.  
Figure 4-1. Scanning Channels Commands  
32 Understanding the HP E1366A/E1367A RF Multiplexers  
Chapter 4  
 
Trigger Hold (TRIG:SOUR HOLD)  
TRIG:SOUR HOLD prevents execution  
of triggers until trigger source is changed.  
Can use TRIG command to trigger a  
switchbox set to TRIG:SOUR HOLD.  
Advance Scan (TRIG)  
Immediate Triggering (TRIG:SOUR IMM)  
Can use TRIG command to ad-  
vance the scan list when switch-  
box is in TRIG:SOUR HOLD or  
TRIG:SOUR BUS. For either  
trigger source, the scan list  
advances one channel per  
TRIG command.  
TRIG:SOUR IMM sets immediate  
(internal) triggering. The scan list is  
automatically advanced. This is the  
default trigger mode.  
Bus Triggering (TRIG:SOUR BUS)  
TRIG:SOUR BUS defines trigger  
source as a *TRG or GET  
command executed over the HP-IB.  
With TRIG:SOUR BUS, the scan list  
is advanced for each *TRG or GET  
command received.  
External Trigger (TRIG)  
TRIG:SOUR EXT sets external  
triggering. The trigger source is a  
(user supplied) input to the Event In  
port. Use a +5V negative-going pulse  
to trigger.  
With two or more switchboxes in a  
mainframe, the first switchbox set for  
EXT trigger keeps the trigger resource  
until the switchbox source is changed  
to BUS, HOLD, or IMM.  
Enabling Trig Out Port (OUTP ON)  
The Trig Out port is shared by all  
instruments in the mainframe. With  
the port enabled (with OUTP ON), it  
generates an output trigger after  
each channel closure for ANY  
switchbox in the mainframe. The  
Trig Out port outputs a +5V  
negative-going pulse.  
Figure 4-2. Scanning Trigger Sources  
Chapter 4  
Understanding the HP E1366A/E1367A RF Multiplexers 33  
Example: Scanning This example uses the HP E1300A/E1301A mainframe "Trig Out" port to  
synchronize the RF multiplexer channel closures to an external  
with External Device  
measurement device. See the figure below for typical user connections.  
For measurement synchronization, the HP E1300A/E1301A Trig Out BNC  
port is connected to the instrument External Trigger In port.  
For this example, the HP E1300A/E1301A and the instrument are  
connected via HP-IB with HP E1300A/E1301A address of 709 and  
instrument address of 722. The RF multiplexer logical address is 120  
(secondary address =120/8 =15). The measurements are transferred  
directly to the computer. (Appropriate instrument commands must be  
added to line 10.) The sequence of operation is:  
1. INIT (line 50) closes channel 100.  
2. The channel closure causes a trigger output from the "Trig Out" port.  
3. Trigger to Ext Trig In initiates channel 100 measurement.  
4. Result is sent to the computer (lines 60 to 80).  
5. TRIGGER command (line 90) advances the scan to channel 101.  
6. Steps 2-5 are repeated for channels 101 through 102.  
10 OUTPUT 722;"TRIG EXT;..."  
20 OUTPUT 70915;"OUTP ON"  
! Configure instrument  
! Enables "Trig Out" port  
30 OUTPUT 70915;"TRIG:SOUR BUS" ! HP-IB bus triggering  
40 OUTPUT 70915;"SCAN (@100;102)" ! Scan channels 00-02  
50 OUTPUT 70915;"INIT"  
60 FOR I = 1 TO 3  
70 ENTER 722;A  
80 PRINT A  
! Enable scan  
! Start count loop  
! Enter reading  
! Display reading  
! Advance scan  
! Increment count  
90 TRIGGER 70915  
100 NEXT I  
110 END  
Figure 4-3. Scanning with External Device  
34 Understanding the HP E1366A/E1367A RF Multiplexers  
Chapter 4  
 
Example: Scanning This example uses the HP E1300A/E1301A mainframe "Trig Out" and  
"Event In" ports to synchronize RF multiplexer channel closures with an  
external measurement device. See the figure below for typical user  
connections. For this example, the mainframe and instrument are connected  
via HP-IB with mainframe address of 709 and instrument address of 722.  
The RF multiplexer’s logical address is 120 (secondary address =120/8 =15).  
Using "Trig Out"  
and " Event In"  
Ports  
With this example, since synchronization with the computer cannot be  
ensured, the external instrument must have internal memory capacity to  
store the readings. Also, you must add the appropriate instrument  
commands to line 10. The sequence of operation is:  
1. INIT (line 50) closes channel 100.  
2. The channel closure causes a trigger output from the "Trig Out" port.  
3. Trigger to Ext Trig In starts channel 100 measurement.  
4. Channel 100 measurement result is stored in instrument.  
5. Trigger is then output from multimeter’s "MEASUREMENT  
COMPLETE" port.  
6. Trigger to "Event In" port advances scan to channel 101.  
7. Steps 2-6 are repeated for channels 101 through 102.  
10 OUTPUT 722;"TRIG EXT;..."  
20 OUTPUT 70915;"OUTP ON"  
! Configure instrument  
! Enables "Trig Out" port  
30 OUTPUT 70915;"TRIG:SOUR EXT" ! Event In triggering  
40 OUTPUT 70915;"SCAN (@100:102)" ! Scan channels 00-02  
50 OUTPUT 70915;"INIT"  
60 END  
! Enable scan  
Figure 4-4. Scan Using "Trig Out" and "Event In" Ports  
Chapter 4  
Understanding the HP E1366A/E1367A RF Multiplexers 35  
 
Using the Scan Complete Bit  
You can use the Scan Complete Bit (bit 8) in the Operation Status register  
of a switchbox to determine when a scanning cycle completes (no other bits  
in the register apply to the switchbox). Bit 8 has a decimal value of 256 and  
you can read it directly with the STAT:OPER? command. Refer to  
STATus:OPERation[:EVENt]? command in Chapter 5 for an example.  
When enabled by the STAT:OPER:ENAB 256 command, the Scan Complete  
Bit will be reported as bit 7 of the Status register. Use the HP-IB Serial Poll  
or the IEEE 488.2 Common Command *STB? to read the Status register.  
When bit 7 of the Status register is enabled by the *SRE 128 Common  
Command to assert an HP-IB Service Request (SRQ), you can interrupt the  
computer when the Scan Complete Bit is set, after a scanning cycle  
completes. This allows the controller to do other operations while the  
scanning cycle is in progress.  
The following example monitors bit 7 in the Status register to determine  
when the scanning cycle completes. The computer used in this example is  
an HP 9000 Series 200/300 used with HP BASIC as the programming  
language. The computer interfaces with an HP E1300A/E1301A mainframe  
over HP-IB. The HP-IB select code is 7, the HP-IB primary address is 09,  
and the HP-IB secondary address is 15.  
Example: Scan  
Complete Interrupt  
10 OUTPUT 70915;"*CLS"  
! Clear all switchbox status structure  
20 OUTPUT 70915;"STAT:OPER:ENAB 256"  
! Enable Scan Complete Bit to  
set bit 7 in Status register  
30 OUTPUT 70915;"*SRE 128"  
! Enable bit 7 of Status register to  
assert SRQ  
40 OUTPUT 70915;"TRIG:SOUR EXT" ! External trigger mode  
50 OUTPUT 70915;"SCAN (@100:105)" ! Select channels to be scanned  
60 OUTPUT 70915;"INIT"  
! Start scanning cycle  
70 WHILE NOT BIT(SPOLL(70915),7)  
! Waiting for scan complete  
80 PRINT "DO OTHER OPERATION HERE"  
! Enter program lines for  
computer to do other operations  
90 END WHILE  
100 PRINT "INTERRUPT GENERATED" ! Program goes to this line after  
interrupt generated by a completed  
scanning cycle  
110 END  
36 Understanding the HP E1366A/E1367A RF Multiplexers  
Chapter 4  
 
l
Chapter 5  
HP E1366A/E1367A RF Multiplexers  
Command Reference  
Using This Chapter  
This chapter describes Standard Commands for Programmable Instruments  
(SCPI) and summarizes IEEE 488.2 Common (*) commands applicable to  
both RF Multiplexer modules. See the appropriate HP B-size or C-size  
configuration guide for additional information on SCPI and Common  
commands. This chapter contains the following sections.  
Command Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 37  
SCPI Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . Page 40  
IEEE 488.2 Common Commands . . . . . . . . . . . . . . . . . . . . . Page 59  
Command Quick Reference. . . . . . . . . . . . . . . . . . . . . . . . . . Page 60  
Command Types  
Commands are separated into two types: IEEE 488.2 Common commands  
and SCPI commands.  
Common The IEEE 488.2 standard defines the Common commands that perform  
functions like reset, self-test, status byte query, etc. Common commands  
Command Format  
are four or five characters in length, always begin with the asterisk character  
(*), and may include one or more parameters. The command keyword is  
separated from the first parameter by a space character. Some examples of  
Common commands are shown be ow:  
*RST  
*ESR 32  
*STB?  
SCPI Command SCPI commands perform functions like closing switches, and querying  
instrument states or retrieving data. A subsystem command structure is a  
Format  
hierarchical structure that usually consists of a top-level (or root) command,  
one or more lower-level commands, and their parameters. The following  
example shows part of a typical subsystem:  
[ROUTe:]  
CLOSe<channel_list>  
SCAN<channel_list>  
:MODE?  
[ROUTe:] is the root command, CLOSe and SCAN are second-level  
commands with parameters, and :MODE? is a third-level command.  
Chapter 5  
HP E1366A/E1367A RF Multiplexers Command Reference 37  
 
Command Separator A colon (:) always separates one command from the next lower-level  
command as shown below:  
ROUTe:SCAN:MODE?  
Colons separate the root command from the second-level command  
([ROUTe:]SCAN) and the second level from the third level (SCAN:MODE?).  
Abbreviated The command syntax shows most commands as a mixture of upper- and  
lowercase letters. The uppercase letters indicate the abbreviated spelling for  
the command. For shorter program lines, send the abbreviated form. For  
better program readability, you may send the entire command. The  
instrument will accept either the abbreviated form or the entire command.  
Commands  
For example, if the command syntax shows MEASure, then MEAS and  
MEASURE are both acceptable forms. Other forms of MEASure, such as  
MEASU or MEASUR will generate an error. You may use upper- or  
lowercase letters. Therefore, MEASURE, measure, and MeAsUrE are all  
acceptable.  
Implied Commands Implied commands are those which appear in square brackets ( [ ] ) in the  
command syntax. (Note that the brackets are not part of the command and  
are not sent to the instrument.) Suppose you send a second-level command  
but do not send the preceding implied command. In this case, the  
instrument assumes you intend to use the implied command and it responds  
as if you had sent it. Examine the SOURce subsystem shown below:  
[SOURce:]  
PULSe  
:COUNt <count>  
:COUNt? [<MIN | MAX>]  
:PERiod <period>  
:PERiod? [<MIN | MAX>]  
The root command SOURce: is an implied command. To set the  
instrument’s pulse count to 25, you can send either of the following  
command statements:  
SOUR:PULS:COUN 25  
or  
PULS:COUN 25  
38 HP E1366A/E1367A RF Multiplexers Command Reference  
Chapter 5  
 
Parameters Parameter Types. The following table contains explanations and examples  
of parameter types you might see later in this chapter.  
Table 5-1. SCPI Parameter Types  
Parameter Type Explanations and Examples  
Numeric  
Accepts all commonly used decimal representations of  
numbers including optional signs, decimal points, and  
scientific notation.  
123, 123E2, -123, -1.23E2, .123, 1.23E-2, 1.23000E-01.  
Special cases include MIN, MAX, and INF.  
Boolean  
Discrete  
Represents a single binary condition that is either  
true or false.  
ON, OFF, 1, 0.  
Selects from a finite number of values. These parameters  
use mnemonics to represent each valid setting.  
An example is the TRIGger:SOURce <source> command  
where <source> can be BUS, EXT, HOLD, or IMM.  
Optional Parameters. Parameters shown within square brackets ( [ ] ) are  
optional parameters. (Note that the brackets are not part of the command  
and are not sent to the instrument.) If you do not specify a value for an  
optional parameter, the instrument chooses a default value. For example,  
consider the ARM:COUNt? [<MIN | MAX>] command. If you send the  
command without specifying a parameter, the present ARM:COUNt value is  
returned. If you send the MIN parameter, the command returns the  
minimum count available. If you send the MAX parameter, the command  
returns the maximum count available. Be sure to place a space between the  
command and the parameter.  
Linking Commands Linking IEEE 488.2 Common Commands with SCPI Commands. Use  
a semicolon (;) between the commands. For example:  
*RST;OUTP ON  
or  
TRIG:SOUR HOLD;*RST  
Linking Multiple SCPI Commands. Use both a semicolon (;) and a colon  
(:) between the commands. For example:  
ARM COUN 1;:TRIG:SOUR EXT  
Chapter 5  
HP E1366A/E1367A RF Multiplexers Command Reference 39  
 
SCPI Command Reference  
This section describes the Standard Commands for Programmable  
Instruments (SCPI) commands for the RF multiplexers. Commands are  
listed alphabetically by subsystem and within each subsystem.  
ABORt  
The ABORt subsystem stops a scan in progress when the scan is enabled via  
the interface, and the trigger modes are TRIGger:SOURce BUS or  
TRIGger:SOURce HOLD.  
Subsystem Syntax ABORt  
Comments  
ABORt operation invalidates the current channel list and sets  
ARM:COUNt 1 (one scanning cycle per INITiate command), sets  
INITiate CONTinuous OFF (no continuous scanning cycles), and sets  
TRIGger:SOURce IMMediate (continuous internal triggering).  
Stopping Scans Enabled from Interface: When a scan is enabled  
from the interface, use an interface CLEAR command or the  
HP E1301A front panel Reset Instr” or “Clear Instr” key to stop  
the scan.  
When the scan is enabled from the interface and the trigger source is  
TRIGger:SOURce BUS or TRIGger:SOURce HOLD, use ABORt or  
the HP E1301A front panel Reset Instr” or “Clear Instr” key to  
stop the scan.  
Stopping Scans Enabled from Front Panel: When a scan is  
enabled from the HP E1301A front panel, execute *RST entered via  
the interface or the front panel Reset Instr” or Clear Instr” key to  
stop the scan.  
Related Commands: ARM, INITiate:CONTinuous, [ROUTe:]SCAN,  
TRIGger  
Example Stopping a Scan with ABORt  
TRIG:SOUR BUS  
!*TRG command is trigger source  
! Set continuous scanning  
! Scan channels 00-03  
INIT:CONT ON  
SCAN (@100:103)  
INIT  
! Start scan, close channel 00  
.
.
ABOR  
! Abort scan in progress  
40 HP E1366A/E1367A RF Multiplexers Command Reference  
Chapter 5  
 
ARM  
The ARM subsystem selects the number of scanning cycles (1 through  
32767) for each INITiate command.  
Subsystem Syntax ARM  
:COUNt <number> MIN | MAX  
:COUNt? [MIN | MAX]  
:COUNt  
ARM:COUNt <number> MIN | MAX allows scanning cycles to occur a  
multiple of times (1 to 32767) with one INITiate command when  
INITiate:CONTinuous OFF |0 is set. MIN sets 1 cycle and MAX sets 32767  
cycles.  
Parameters  
Parameter Name  
Parameter Type  
Range of Values  
numeric  
1 |32767 |MIN |MAX  
<number>  
Comments  
Number of Scans: Use only values between 1 to 32767 for the  
number of scanning cycles.  
Related Commands: ABORt, INITiate:IMMediate  
*RST Condition: ARM:COUNt 1  
Example Setting Ten Scanning Cycles  
This example sets an RF multiplexer for 10 scans of channels 00 through  
03. When the scan sequence completes, channel 03 is closed.  
ARM:COUN 10  
SCAN (@100:103)  
INIT  
! Set 10 scans per INIT command  
! Scan channels 00-03  
! Start scan, close channel 00  
Chapter 5  
HP E1366A/E1367A RF Multiplexers Command Reference 41  
 
:COUNt?  
ARM:COUNt? [MIN | MAX] returns current number of scanning cycles set  
by ARM:COUNt. The current number of scan cycles is returned when MIN  
or MAX is not supplied. With MIN or MAX passed as parameters, MIN  
returns 1 and MAX returns 32767.  
Parameters  
Parameter Name  
Parameter Type  
Range of Values  
MIN | MAX  
numeric  
MIN = 1, MAX = 32767  
Comments  
Related Commands: INITiate[:IMMediate]  
Example Query Number of Scanning Cycles  
This example sets a switchbox for 10 scanning cycles of channels 00  
through 03 and queries the number of scan cycles set. The ARM:COUN?  
command returns 10.  
ARM:COUN 10  
ARM COUN?  
! Set 10 scans per INIT command  
! Query number of scans  
42 HP E1366A/E1367A RF Multiplexers Command Reference  
Chapter 5  
 
DISPlay  
The DISPlay subsystem monitors the channel state of a selected module  
(or card) in a switchbox. This subsystem operates only with mainframes  
which have a display, such as the HP 75000 Series B Mainframe  
(HP E1301A).  
Subsystem Syntax DISPlay  
:MONitor  
[:STATe] <boolean>  
:CARD <number> | AUTO  
:MONitor[:STATe] DISPlay:MONitor[:STATe] <boolean> turns the monitor mode on or off.  
Parameters  
Parameter Name  
Parameter Type  
Range of Values  
ON | OFF | 1 | 0  
boolean  
ON | OFF | 1 | 0  
Comments  
Monitoring Switchbox Channels: DISPlay[:STATe] ON or  
DISPlay[:STATe] 1 turns the monitor mode on to show the channel  
state of the selected module. DISPlay[:STATe] OFF or  
DISPlay[:STATe] 0 turns the monitor mode off.  
Selecting the Module to be Monitored: Use the  
DISPlay:MONitor:CARD <number> AUTO command to select the  
module.  
Monitor Mode on an HP E1301A Mainframe Display: A typical  
display for the HP E1366A or HP E1367A RF Multiplexer module  
follows, where channel 00 (in bank 0) and channel 13 (in bank 1) are  
closed.  
B0:0 B1:3  
*RST Condition: DISPlay:MONitor[:STATe] OFF | 0  
Example Enabling the Monitor Mode  
DISP:MON:CARD 2  
DISP:MON 1  
! Selects module #2 in a switchbox  
! Turns the monitor mode ON  
Chapter 5  
HP E1366A/E1367A RF Multiplexers Command Reference 43  
 
:MONitor:CARD DISPlay:MONitor:CARD <number> | AUTO selects the module in a  
switchbox to be monitored.  
Parameters  
Parameter Name  
Parameter Type  
Range of Values  
numeric  
1-99  
<number> | AUTO  
Comments  
Selecting a Specific Module to be Monitored: Use the  
DISPlay:MONitor:CARD command to send the module number for  
the switchbox to be monitored.  
Selecting the Present Module to be Monitored: Use the  
DISPlay:MONitor:AUTO command to select the last module  
addressed by a switching command (e.g., [ROUTe:]CLOSe).  
*RST Condition: DISPlay:MONitor:CARD AUTO  
Example Select Module #2 in a Switchbox for Monitoring  
DISP:MON:CARD 2  
! Selects module #2 in a switchbox  
44 HP E1366A/E1367A RF Multiplexers Command Reference  
Chapter 5  
 
INITiate  
The INITiate subsystem selects continuous scanning cycles and starts the  
scanning cycle.  
Subsystem Syntax INITiate  
:CONTinuous ON | OFF | 1 | 0  
:CONTinuous?  
[:IMMediate]  
:CONTinuous INITiate:CONTinuous ON | OFF | 1 | 0 enables or disables continuous  
scanning cycles for the switchbox.  
Parameters  
Parameter Name  
Parameter Type  
Range of Values  
ON | OFF | 1 | 0  
boolean  
ON | OFF | 1 | 0  
Comments  
Continuous Scanning Operation: Continuous scanning is enabled  
with the INITiate:CONTinuous ON or INITiate:CONTinuous 1  
command. Sending the INITiate[:IMMediate] command closes the  
first channel in the channel list.  
Each trigger from a trigger source selected by the TRIGger:SOURce  
command advances the scan through the channel list. A trigger at  
the end of the channel list closes the first channel in the channel list  
and the scan cycle repeats.  
Non-Continuous Scanning Operation: This is enabled with the  
INITiate:CONTinuous OFF or INIT:CONT 0 command. Sending the  
INIT:IMM command closes the first channel in the channel list.  
Each trigger from a trigger source selected by the TRIGger:SOURce  
command advances the scan through the channel list. At the end of  
the scanning cycle, all channels in the channel list are closed.  
Stopping Continuous Scans: See the ABORt command.  
Related Commands: ABORt, ARM:COUNt, TRIGger  
*RST Condition: INITiate:CONTinuous OFF  
Example Enabling Continuous Scans  
This example enables continuous scanning of channels 00 through 03 of a  
single-module switchbox. Since TRIGger:SOURce IMMediate (default) is  
set, use an interface clear command (such as CLEAR) to stop the scan.  
INIT:CONT ON  
SCAN (@100:103)  
INIT  
! Enable continuous scanning  
! Define channel list  
! Start scan cycle, close channel 00  
Chapter 5  
HP E1366A/E1367A RF Multiplexers Command Reference 45  
 
:CONTinuous? INITiate:CONTinuous? queries the scanning state. With continuous  
scanning enabled, the command returns 1. With continuous scanning  
disabled, the command returns 0.  
Example Query Continuous Scanning State  
This example enables continuous scanning of a switchbox and queries the  
state. Since continuous scanning is enabled, INIT:CONT? returns 1.  
INIT:CONT ON  
INIT:CONT?  
! Enable continuous scanning  
! Query continuous scanning state  
[:IMMediate] INITiate[:IMMediate] starts the scanning cycle and closes the first channel  
in the channel list. Successive triggers from the source selected by the  
TRIGger:SOURce command advances the scan through the channel list.  
Comments  
Starting the Scanning Cycle: The INITiate[:IMMediate] command  
starts scanning by closing the first channel in the channel list. Each  
trigger received advances the scan to the next channel in the channel  
list. An invalid channel list definition generates an error (see  
[ROUTe:]SCAN command).  
Stopping Scanning Cycles: See the ABORt command.  
Example Enabling a Single Scan  
This example enables a single scan of channels 00 through 03 of a  
single-module switchbox. The trigger source to advance the scan is  
immediate (internal) triggering set with (default) TRIGger:SOURce  
IMMediate.  
SCAN (@100:103)  
INIT  
! Scan channels 00-03  
! Begin scan, close channel 00 (use  
immediate triggering)  
46 HP E1366A/E1367A RF Multiplexers Command Reference  
Chapter 5  
 
OUTPut  
The OUTPut subsystem enables or disables the Trig Out” port of the  
HP E1300A/E1301A mainframe or the HP E1405A/E1406A module.  
Subsystem Syntax OUTPut  
[:STATe] ON | OFF | 1 | 0  
[:STATe]?  
[:STATe] OUTPut[:STATe] ON | OFF | 1 | 0 enables/disables the Trig Out” port on  
the rear panel of the HP E1300A/E1301A mainframe or the  
HP E1405A/E1406A module. OUTPut[:STATe] ON | 1 enables the port  
and OUTPut[:STATe] OFF | 0 disables the port.  
Parameters  
Parameter Name  
Parameter Type  
Range of Values  
ON | OFF | 1 | 0  
boolean  
ON | OFF | 1 | 0  
Comments  
Enabling “Trig Out” Port: When enabled, a pulse is output from  
the Trig Out” port after each scanned switchbox channel is closed.  
If disabled, a pulse is not output from the port after channel closures.  
The output pulse is a +5 V negative-going pulse.  
“Trig Out” Port Shared by Switchboxes: When enabled, the  
Trig Out” port is pulsed by any switchbox each time a scanned  
channel is closed. To disable the output for a specific switchbox,  
send the OUTPut[:STATe] OFF or OUTPut[:STATe] 0 command for  
that switchbox.  
Related Commands: [ROUTE:]SCAN, TRIGger:SOURce  
*RST Condition: OUTPut[:STATe] OFF (port disabled)  
Example Enable "Trig Out" Port  
OUTP:STAT ON  
! Enable “Trig Out” port to output  
pulse after each scanned channel is  
closed  
[:STATe]? OUTPut[:STATe]? queries the present state of the Trig Out” port. The  
command returns 1 if the port is enabled or 0 if the port is disabled.  
Example Query “Trig Out” Port Enable State  
This example enables the Trig Out” Port and queries the enable state. The  
OUTPut[:STATe]? command returns 1 since the port is enabled.  
OUTP:STAT ON  
OUTP:STAT?  
! Enable “Trig Out” port  
! Query port enable state  
Chapter 5  
HP E1366A/E1367A RF Multiplexers Command Reference 47  
 
[ROUTe:]  
The ROUTe subsystem controls switching and scanning operations for RF  
multiplexer modules in a switchbox.  
Subsystem Syntax [ROUTe:]  
CLOSe <channel_list>  
CLOSe? <channel_list>  
OPEN <channel_list>  
OPEN? <channel_list>  
SCAN <channel_list>  
:MODE NONE | VOLT | RES | FRES  
:MODE?  
CLOSe [ROUTe:]CLOSe <channel_list> closes the RF multiplexer channels  
specified by channel_list. The channel_list has the form (@ccnn) where  
cc = card number (01-99) and nn = channel number (00-03 and 10-13).  
Parameters  
Parameter Name  
Parameter Type  
Range of Values  
numeric  
cc00-cc03, cc10-cc13  
<channel_list>  
Comments  
Closing Channels: To close:  
a single channel, use [ROUTe:]CLOSe (@ccnn)  
multiple channels, use [ROUTe:]CLOSe (@ccnn,ccnn)  
sequential channels, use [ROUTe:]CLOSe (@ccnn:ccnn)  
groups of sequential channels, use  
[ROUTe:]CLOSe (@ccnn:ccnn,ccnn:ccnn)  
or any combination.  
Closure order for multiple channels with a single command is not  
guaranteed.  
Related Commands: [ROUTe:]OPEN, [ROUTe:]CLOSe?  
*RST Condition: All channels open.  
Example Closing Multiplexer Channels  
This example closes channels 100 and 213 of a two-module switchbox (card  
numbers 01 and 02).  
CLOS (@100,213)  
! Close channels 100 and 213.  
100 closes channel 00 of card #1;  
213 closes channel 13 of card #2  
48 HP E1366A/E1367A RF Multiplexers Command Reference  
Chapter 5  
 
CLOSe? [ROUTe:]CLOSe? <channel_list> returns the current state of the channel(s)  
queried. The channel_list is in the form (@ccnn) (see [ROUTe:]CLOSe for  
definition). The command returns 1 for channel(s) closed or returns 0 for  
channel(s) opened.  
Comments  
Query is Software Readback: The [ROUTe:]CLOSe? command  
returns the current software state of the channel(s) specified. It does  
not account for relay hardware failures. A maximum of 127  
channels at a time can be queried for a multi-module switchbox.  
Example Query Channel Closure  
This example closes channels 100 and 213 of a two-module switchbox and  
queries channel closure. Since the channels are programmed to be closed,  
1,1 is returned as a string.  
CLOS (@100,213)  
CLOS? (@100,213)  
! Close channels 100 and 213  
! Query channels 100 and 213 state  
OPEN [ROUTe:]OPEN <channel_list> opens the RF multiplexer channels  
specified by channel_list. The channel_list has the form (@ccnn) where  
cc = card number (00-99) and nn = channel number (00-03 and 10-13).  
Parameters  
Parameter Name  
Parameter Type  
Range of Values  
<channel_list>  
numeric  
cc00-cc03, cc10-cc13  
Comments  
Opening Channels: To open:  
a single channel, use [ROUTe:]OPEN (@ccnn)  
for multiple channels, use [ROUTe:]OPEN (@ccnn,ccnn)  
sequential channels, use [ROUTe:]OPEN (@ccnn:ccnn)  
groups of sequential channels, use  
[ROUTe:]OPEN (@ccnn:ccnn,ccnn:ccnn)  
or any combination.  
Opening order for multiple channels with a single command is not  
guaranteed.  
Related Commands: [ROUTe:]CLOSe, [ROUTe:]OPEN?  
*RST Condition: All channels open.  
Example Opening Channels  
This example opens channels 100 and 213 of a two-module switchbox (card  
numbers 01 and 02).  
OPEN (@100,213)  
! Open channels 100 and 213.  
100 opens channel 00 of card #1;  
213 opens channel 13 of card #2  
Chapter 5  
HP E1366A/E1367A RF Multiplexers Command Reference 49  
 
OPEN? [ROUTe:]OPEN? <channel_list> returns the current state of the channel(s)  
queried. The channel_list is in the form (@ccnn) (see [ROUTe:]OPEN for  
definition). The command returns 1 for channel(s) open or returns 0 for  
channel(s) closed.  
Comments  
Query is Software Readback: The [ROUTe:]OPEN? command  
returns the current software state of the channels specified. It does  
not account for relay hardware failures. A maximum of 127  
channels at a time can be queried for a multi-module switchbox.  
Example Query Channel Open State  
This example opens channels 100 and 213 of a two-module switchbox and  
queries channel 213 state. Since channel 213 is programmed to be open, 1  
is returned.  
OPEN (@100,213)  
OPEN? (@213)  
! Open channels 100 and 213  
! Query channel 213 state  
50 HP E1366A/E1367A RF Multiplexers Command Reference  
Chapter 5  
 
SCAN [ROUTe:]SCAN <channel_list> defines the channels to be scanned. The  
channel_list has the form (@ccnn) where cc = card number (01-99) and  
nn = channel number (00-03 and 10-13).  
Parameters  
Parameter Name  
Parameter Type  
Range of Values  
numeric  
cc00-cc03, cc10-cc13  
<channel_list>  
Comments  
Defining Scan List: When executing [ROUTe:]SCAN, the channel  
list is checked for valid card and channel numbers. An error is  
generated for an invalid channel list.  
Scanning Channels: You can scan single channels (@ccnn);  
multiple channels (@ccnn,ccnn,...); sequential channels  
(@ccnn:ccnn); groups of sequential channels  
(@ccnn:ccnn,ccnn:ccnn); or any combination.  
Scanning Operation: When a valid channel list is defined,  
INITiate[:IMMediate] begins the scan and closes the first channel in  
the channel list. Successive triggers from the source specified by  
TRIGger:SOURce advances the scan through the channel list.  
Stopping Scan: See the ABORt command.  
Related Commands: TRIGger, TRIGger:SOURce  
*RST Condition: All channels open.  
Example Scanning Using External Devices  
See Chapter 4, Example: Scanning With External Device” or Example:  
Scanning Using "Trig Out" and "Event In" Ports” for example scanning  
programs using external instruments.  
Chapter 5  
HP E1366A/E1367A RF Multiplexers Command Reference 51  
 
SCAN:MODE [ROUTe:]SCAN:MODE NONE | VOLT | RES | FRES sets the scan mode for  
the RF multiplexers. NONE, VOLT, and RES have no effect on multiplexer  
operation. With FRES, the switch is set for paired-channel” scanning.  
That is, when a channel in bank 0 is closed, the associated channel in bank 1  
is simultaneously closed.  
Parameters  
Parameter Name  
Parameter Type  
Range of Values  
NONE | VOLT |  
RES | FRES  
discrete  
NONE | VOLT |  
RES | FRES  
Comments  
Order of Command Execution: The [ROUTe:]SCAN:MODE  
command must be executed before the [ROUTe:]SCAN <channel_list>  
command.  
FRES Mode Description: With FRES, and channel closed in bank 0  
automatically closes the paired channel in bank 1. For example, with  
FRES, closing channel 00 also simultaneously closes channel 10,  
closing channel 01 closes channel 11, etc. Use only channels 00-03  
for the channel_list. Specifying channels 10-13 causes an error.  
*RST Condition: ROUT:SCAN:MODE NONE  
Example Selecting Paired-Channel Scanning  
TRIG:SOUR EXT  
SCAN:MODE FRES  
SCAN (@100:103)  
INIT  
! External trigger source  
! Paired-channel scanning mode  
! Select channels for scanning  
! Start scanning, close channels  
100 and 110  
SCAN:MODE? [ROUTe:]SCAN:MODE? returns the current state of the scan mode. The  
command returns "NONE", "VOLT","RES", or "FRES" depending on  
the [ROUTE:]SCAN:MODE parameter setting.  
Example Query Scan Mode  
Since this example selects the FRES (paired-channel scanning), the query  
command returns "FRES".  
SCAN:MODE FRES  
SCAN:MODE?  
! Selects paired-channel scanning  
! Query scanning mode  
52 HP E1366A/E1367A RF Multiplexers Command Reference  
Chapter 5  
 
STATus  
The STATus subsystem reports the bit values of a Standard Operation  
Status register. It enables the Status register to set a bit after a bit is set to 1  
by the Standard Operation register.  
Subsystem Syntax STATus  
:OPERation  
[:EVENt]?  
:ENABle <number>  
:OPERation[:EVENt]? STATus:OPERation[:EVENt]? returns the bit value of the Operation Status  
register (only bit 8 is used by the multiplexer modules).  
Comments  
Setting Bit 8 of the Operation Status Register: Bit 8 (Scan  
Complete) is set to 1 after a scanning cycle completes. Bit 8 returns  
0 after sending the STATus:OPERation[:EVENt]? command.  
Returned Data after sending the STATus:OPERation[:EVENt]?  
Command: The command returns +256 if bit 8 of the Operation  
Status register is set to 1. The command returns +0 if bit 8 of the  
Operation Status register is set to 0.  
Related Commands: [ROUTe:]SCAN  
Example Reading the Operation Status Register After a Scanning Cycle  
STAT:OPER?  
! Returns the bit values of the  
Standard Operation Status  
register. Returns +256 if bit 8 is  
set to 1 or returns +0 if bit 8 is set  
to 0.  
:OPERation:ENABle STATus:OPERation:ENABle <number> enables the Operation Status  
register to set a bit in the Status register. For RF multiplexer modules,  
setting bit 8 in the Operation Status register to 1 sets bit 7 in the Status  
register to 1.  
Parameters  
Parameter Name  
Parameter Type  
Range of Values  
numeric  
1-32767  
<number>  
Comments  
Setting Bit 7 of the Status Register:  
STATus:OPERation:ENABle 256 sets bit 7 of the Status register to 1  
after bit 8 of the Operation Status register is set to 1.  
Related Commands: [ROUTe:]SCAN  
Example Enabling Status Register Bit 7  
STAT:OPER:ENAB 256  
! Enables bit 7 of Status register  
Chapter 5  
HP E1366A/E1367A RF Multiplexers Command Reference 53  
 
SYSTem  
The SYSTem subsystem returns error numbers/messages in the error queue  
of a switchbox, and returns module types and descriptions in a switchbox.  
Subsystem Syntax SYSTem  
:ERRor?  
:CDEScription? <number>  
:CTYPe? <number>  
:CPON <number> | ALL  
:ERRor? SYSTem:ERRor? returns the error numbers/messages in the error queue of  
a switchbox. See Appendix C for error message information.  
Comments  
Error Numbers/Messages in the Error Queue: Each error  
generated by a switchbox stores an error number and corresponding  
error message in the error queue. The error number is always  
negative and the error message can be up to 255 characters long.  
Clearing the Error Queue: An error number/message is removed  
from the queue each time the SYSTem:ERRor? command is sent.  
The errors are cleared first-in, first-out. When the queue is empty,  
each following SYSTem:ERRor? command returns 0, No error.  
To clear all error numbers/messages in the queue, execute *CLS.  
Maximum Error Numbers/Messages in the Error Queue: The  
queue holds a maximum of 30 error numbers/messages for each  
switchbox. If it overflows, the last error in the queue is replaced by  
-350, Too many errors. The least recent error numbers/messages  
remain in the queue and the most recent are discarded.  
Example Reading the Error Queue  
SYST:ERR?  
! Query the error queue  
:CDEScription? SYSTem:CDEScription? <number> returns the description of a selected  
module (card) in a switchbox.  
Parameters  
Parameter Name  
Parameter Type  
Range of Values  
<number>  
numeric  
1-99  
Comments  
RF Multiplexers Module Description:  
The SYST:CDESciption? <number> command returns: 50 Ohm RF  
Mux” for the HP E1366A or 75 Ohm RF Mux” for the HP E1367A.  
Example Reading the Description of a Card #1 Module  
SYST:CDES? 1  
! Return the description  
:CTYPe? SYSTem:CTYPe? <number> returns the module (card) type of a selected  
module in a switchbox.  
54 HP E1366A/E1367A RF Multiplexers Command Reference  
Chapter 5  
 
Parameters  
Comments  
Parameter Name  
Parameter Type  
Range of Values  
numeric  
1-99  
<number>  
RF Multiplexers Model Number:  
The SYSTem:CTYPe? <number> command returns  
"HEWLETT-PACKARD,E1366A,0,A.01.00" (E1366A), or  
returns "HEWLETT-PACKARD,E1367A,0,A.01.00"  
(E1367A), where the "0" after "E1366A"or "E1367A" is the  
module serial number (always 0) and "A.01.00" is an example  
of the module revision code number.  
Example Reading the Model Number of a Card #1 Module  
SYST:CTYP? 1  
! Return the model number  
:CPON SYSTem:CPON <number> | ALL sets the selected module (card) in a  
switchbox to its power-on state.  
Parameters  
Parameter Name  
Parameter Type  
Range of Values  
numeric  
1-99  
<number>  
Comments  
RF Multiplexers Power-On State: The power-on state is all  
channels (relays) open. Note that *RST opens all channels of all  
modules in a switchbox, while SYSTem:CPON opens the channels  
in only the module (card) specified in the command.  
Example Setting Card #1 Module to its Power-on State  
SYST:CPON 1  
! Sets module #1 to power-on state  
Chapter 5  
HP E1366A/E1367A RF Multiplexers Command Reference 55  
 
TRIGger  
The TRIGger subsystem controls the triggering operation of RF multiplexer  
modules in a switchbox.  
Subsystem Syntax TRIGger  
[:IMMediate]  
:SOURce BUS | EXTernal | HOLD | IMMediate  
:SOURce?  
[:IMMediate] TRIGger[:IMMediate] causes a trigger to occur when the defined trigger  
source is TRIGger:SOURce HOLD or TRIGger:SOURce BUS.  
Comments  
Executing the TRIGger[:IMMediate] Command: A channel list  
must be defined with [ROUTe:]SCAN <channel_list> and an  
INITiate[:IMMediate] command must be executed before  
TRIGger[:IMMediate] will be executed.  
HOLD or BUS Source Remains: The TRIGger:SOURce HOLD or  
TRIGger:SOURce BUS commands remain in effect, if selected, after  
triggering a switchbox with the TRIGger[:IMMediate] command.  
Related Commands: INITiate, [ROUTe:]SCAN  
Example Advancing Scan Using the TRIGger Command  
This example uses the TRIGger command to advance the scan of a  
single-module switchbox from channel 00 through 03. Since  
TRIGger:SOURce HOLD is set, the scan is advanced one channel each time  
TRIGger is executed.  
TRIG:SOUR HOLD  
SCAN (@100:103)  
INIT  
! Sets trigger source to HOLD  
! Defines channel list  
! Begin scan, close channel 00  
! Start count loop  
loop statement  
TRIG  
! Advance scan to next channel  
! Increment loop count  
increment loop  
56 HP E1366A/E1367A RF Multiplexers Command Reference  
Chapter 5  
 
:SOURce  
TRIGger:SOURce BUS | EXTernal | HOLD | IMMediate specifies the  
trigger source to advance the channel list during scanning.  
Parameters  
Parameter Name  
BUS  
Parameter Type  
discrete  
Range of Values  
*TRG or GET command  
“Event In” BNC port  
Hold triggering  
EXTernal  
HOLD  
discrete  
discrete  
IMMediate  
discrete  
Immediate triggering  
Comments  
Enabling the Trigger Source: The TRIGger:SOURce command  
only selects the trigger source. The INITiate[:IMMediate] command  
enables the trigger source.  
Using the TRIG Command: You can use TRIGger[:IMMediate] to  
advance the scan when TRIGger:SOURce HOLD or  
TRIGger:SOURce BUS is selected.  
Using External Trigger Inputs: With TRIGger:SOURce EXTernal  
selected, only one switchbox at a time can use the external trigger  
input at the HP E1300A/E1301A mainframe Event In” BNC port.  
The trigger input is assigned to the first switchbox that requested the  
external trigger source (with a TRIGger:SOURce EXTernal  
command).  
Assigning External Trigger: A switchbox assigned with  
TRIGger:SOURce EXTernal remains assigned to that source until the  
switchbox trigger source is changed to BUS, HOLD, or IMMediate.  
When the source is changed, the external trigger source is available  
to the next switchbox which requests it (with a  
TRIGger:SOURce EXTernal command). If a switchbox requests an  
external trigger input already assigned to another switchbox an error  
is generated.  
Using Bus Triggers: To trigger the switchbox with  
TRIGger:SOURce BUS selected, use the IEEE 488.2 common  
command *TRG or the HP-IB Group Execute Trigger (GET)  
command.  
Trig Out Port Shared by Switchboxes: See the OUTPut  
command.  
Related Commands: ABORt, [ROUTe:]SCAN, TRIGger  
*RST Condition: TRIGger:SOURce IMMediate  
Chapter 5  
HP E1366A/E1367A RF Multiplexers Command Reference 57  
 
Example Scanning Using External Triggers  
This example uses external triggering (TRIG:SOUR EXT) to scan channels  
00 through 03 of a single-module switchbox. The trigger source to advance  
the scan is the input to the Event In” BNC on an HP E1300A/E1301A  
mainframe. When INIT is executed, the scan is started and channel 00 is  
closed. Then each trigger received at the Event In” BNC advances the  
scan to the next channel.  
TRIG:SOUR EXT  
SCAN (@100:103)  
INIT  
! Select external triggering  
! Scan channels 00 through 03  
! Begin scan, close channel 00  
! Advance scan to next channel  
trigger externally  
Example Scanning Using Bus Triggers  
This example uses bus triggering (TRIG:SOUR BUS) to scan channels 00  
through 03 of a single-module switchbox. The trigger source to advance the  
scan is the *TRG command (as set with TRIGger:SOURce BUS). When  
INIT is executed, the scan is started and channel 00 is closed. Then each  
*TRG command advances the scan to the next channel.  
TRIG:SOUR BUS  
SCAN (@100:103)  
INIT  
! Select interface (bus) triggering  
! Scan channels 00 through 03  
! Start scan, close channel 00  
! Loop to scan all channels  
loop statement  
*TRG  
! Advance scan using bus triggering  
! Increment loop count  
increment loop  
:SOURce? TRIGger:SOURce? returns the current trigger source for the switchbox.  
Command returns either "BUS", "EXT", " HOLD", or "IMM"for trigger  
sources BUS, EXTernal, HOLD, or IMMediate, respectively.  
Example Query Trigger Source  
This example sets external triggering and queries the trigger source. Since  
external triggering is set, TRIG:SOUR? returns "EXT".  
TRIG:SOUR EXT  
TRIG:SOUR?  
! Set external trigger source  
! Query trigger source  
58 HP E1366A/E1367A RF Multiplexers Command Reference  
Chapter 5  
 
IEEE 488.2 Common Commands  
The following table lists the IEEE 488.2 Common (*) Commands that apply  
to the RF Multiplexer module. The operation of some of these commands is  
described in Chapter 4 of this manual. For information on Common  
Commands, refer to the HP B-size configuration guide or the ANSI/IEEE  
Standard 488.2-1987.  
Command Title  
Description  
*IDN?  
*RST  
Identification  
Reset  
Returns identification string of the switchbox.  
Opens all channels, and invalidates current channel list for Opens all  
channels, and invalidates current channel list for scanning. Sets  
ARM:COUN 1, TRIG:SOUR IMM, and INIT:CONT OFF.  
*TST?  
Self-Test  
Always returns 0.  
See note below.  
See note below.  
See note below.  
*OPC  
*OPC?  
*WAI  
Operation Complete  
Operation Complete Query  
Wait to Complete  
*CLS  
Clear status  
Clears all status registers (see STATus:OPERation[:EVENt]?).  
See note below.  
*ESE  
Event status enable  
Event status enable query  
Event status register query  
Service request enable  
*ESE?  
*ESR?  
*SRE  
*SRE?  
*STB?  
See note below.  
See note below.  
Enables status register bits (see Chapter 4 for operation).  
Service request enable query See note below.  
Read status byte query  
See note below.  
*TRG  
Trigger  
Triggers the switchbox to advance the scan when scan is enabled and  
trigger source is TRIGger:SOURce BUS.  
*RCL  
*SAV  
Recall instrument state  
Store instrument state  
See note below.  
See note below.  
Note: These commands apply to many instruments and are not documented in detail here. See the  
appropriate HP B-size or C-size configuration guide, or the ANSI/IEEE Standard 488.2-1987 for more information.  
Chapter 5  
HP E1366A/E1367A RF Multiplexers Command Reference 59  
 
Command Quick Reference  
The following tables summarize SCPI and IEEE 488.2 Common (*)  
commands for the RF Multiplexer modules used in a switchbox.  
SCPI Commands Quick Reference  
Command  
ABORt  
ARM  
Description  
Abort a scan in progress.  
Multiple scans per INIT command.  
Query number of scans.  
:COUNt <number>  
:COUNt? [MIN |MAX]  
DISPlay  
INITiate  
Selects monitor mode.  
:MONitor[:STATe] <boolean>  
Selects module to be monitored.  
:MONitor:CARD <number>|AUTO  
:CONTinuous ON |OFF  
:CONTinuous?  
[:IMMediate]  
Enables/disables continuous scanning.  
Query continuous scan state.  
Starts a scanning cycle.  
OUTPut  
[:STATe] ON |OFF  
[:STATe]?  
Enables/disables "Trig Out" pulse.  
Query port enable state.  
[ROUTe:]  
Close channel(s).  
Query channel(s) closed.  
Open channel(s).  
Query channel(s) opened.  
Define channels for scanning.  
CLOSe <channel_list>  
CLOSe? <channel_list>  
OPEN <channel_list>  
OPEN? <channel_list>  
SCAN <channel_list>  
SCAN:MODE NONE |VOLT |  
RES |FRES  
Sets scan mode.  
STATus  
:OPERation[:EVENt]?  
:OPERation:ENABle  
Returns status of Operation Status register.  
Enables the Operation Status register to set a bit in the Status register.  
SYSTem  
:ERRor?  
Returns error number/message in a switchbox Error Queue.  
Returns description of module in a switchbox  
Returns the module type.  
:CDEScription? <number>.  
:CTYPe? <number>  
:CPON <number>|ALL  
Sets specified module to its power-on state.  
TRIGger  
[:IMMediate]  
Causes a trigger to occur.  
Trigger source is *TRG.  
Trigger source is "Event In".  
Hold off triggering.  
Continuous (internal) triggers.  
Query scan trigger source.  
:SOURce BUS  
:SOURce EXTernal  
:SOURce HOLD  
:SOURce IMMediate  
:SOURce?  
IEEE 488.2 Common Commands Quick Reference  
Command  
Title  
Description  
*RST  
Reset  
Opens all channels, and invalidates current channel list for scanning. Sets  
ARM:COUN 1, TRIG:SOUR IMM, and INIT:CONT OFF.  
*TRG  
Bus Trigger  
Self-Test  
When scan is enabled and trigger source is TRIG:SOUR BUS, use the  
*TRG command to trigger the switchbox to advance the scan.  
*TST?  
Always returns 0.  
60 HP E1366A/E1367A RF Multiplexers Command Reference  
Chapter 5  
 
Appendix A  
HP E1366A/E1367A RF Multiplexer  
Specifications  
Input Characteristics  
AC Performance  
Maximum Voltage - any center or shield For Z = Z = 50(E1366A)  
L
S
to any other center, shield, or chassis:  
For Z = Z = 75(E1367A)  
L
S
42 V Peak  
<10MHz  
<100MHz  
<500MHz  
<1.3GHz  
Maximum Current per Channel or  
Insertion Loss (dB)  
Common: 1 Adc or ac  
rms  
(40°C, 65% RH)  
Crosstalk(dB) (Channel-Channel*, or Channel-Common)  
<0.3  
<0.7  
<1.5  
<3.0  
1
Maximum Power per Channel or  
Common: 24 W or 24 VA  
<-90  
<1.2  
<-80  
<-60  
<-40  
VSWR  
<1.25  
<1.35  
<1.55  
* With one channel closed.  
General  
1 Specification assumes 50or 75termination. If all channels  
unterminated, derate specification by 6dB.  
Channels consist of non-latching  
armature relays.  
Risetime: <300psec  
Signal Delay: <3nsec ± 50psec  
Typical Relay Life:  
With no load: 5 x 10 operations  
With max. rated load: 10 operations  
6
Capacitance:  
Center-shield <60pF  
5
Note: Relays are subject to normal wearout  
Chassis-shield <0.15µF  
based on the number of operations.  
Module Size/Device Type: B, register-based  
Connectors Used: P1  
DC Performance  
Thermal Offset: <6µV  
Number of Slots: 1  
Typical Closed Channel Resistance:  
VXIbus Interface Capability:  
Slave, Interrupter, A16, D16  
<1Ω  
End of Relay Life Closed Channel  
Interrupt Level: 1-7, selectable  
Resistance: <3Ω  
Power Requirements:  
Insulation Resistance  
Voltage  
+5  
+12  
(any terminal to any terminal):  
(40° C, 65% RH): >10 Ω  
8
Peak module current, IPM (A):  
Dynamic module current, IDM (A):  
0.10 0.18  
0.01 0.01  
Watts/Slot: 3.0  
Appendix A  
HP E1366A/E1367A RF Multiplexer Specifications 61  
 
Typical Crosstalk (channel-channel)  
Cooling/Slot:  
0.05 mm H O @ 0.25 liter/sec  
2
Humidity: 65% 0° to 40° C  
Operating Temperature: 0° to 55° C  
Storage Temperature: - 40° to 75° C  
EMC, RFI, Safety:  
meets FTZ1046/1984, CSA556B, IEC348, UL1244  
Net Weight (kg): 0.7  
Typical Return/Loss VSVR  
Typical Insertion Loss  
62 HP E1366A/E1367A RF Multiplexer Specifications  
Appendix A  
Relay Life  
Electromechanical relays are subject to normal wear-out. Relay life  
depends on several factors. The effects of loading and switching frequency  
are briefly discussed below:  
Relay Load. In general, higher power switching reduces relay life. In  
addition, capacitive/inductive loads and high inrush currents (e.g., turning  
on a lamp or starting a motor) reduces relay life. Exceeding specified  
maximum inputs can cause catastrophic failure.  
Switching Frequency. Relay contacts heat up when switched. As the  
switching frequency increases, the contacts have less time to dissipate heat.  
The resulting increase in contact temperature also reduces relay life.  
End of Life A preventative maintenance routine can prevent problems caused by  
unexpected relay failure. The end of the life of the relay can be determined  
Detection  
by using the three methods described below. The best method (or  
combination of methods), as well as the failure criteria, depends on the  
application in which the relay is used.  
Contact Resistance. As the relay begins to wear out, its contact resistance  
increases. When the resistance exceeds a predeterminded value, the relay  
should be replaced.  
Stability of Contact Resistance. The stability of the contact resistance  
decreases with age. Using this method, the contact resistance is measured  
several (5-10) times, and the variance of the measurements is determined.  
An increase in the variance indicates deteriorating performance.  
Number of Operations. Relays can be replaced after a predetermined  
number of contact closures. However, this method requires knowledge of  
the applied load and life specifications for the applied load.  
Replacement The replacement strategy depends on the application. If some relays are  
used more often, or at a higher load, than the others, the relays can be  
Strategy  
individually replaced as needed. If all the relays see similar loads and  
switching frequencies, the entire circuit board should be replaced when the  
end of life approaches. The sensitivity of the application should be weighed  
against the cost of replacing relays with some useful life remaining.  
Note  
Relays that wear out normally or fail due to misuse should not be  
considered defective and are not covered by the product’s warranty.  
Appendix A  
HP E1366A/E1367A RF Multiplexer Specifications 63  
 
Notes  
64 HP E1366A/E1367A RF Multiplexer Specifications  
Appendix A  
Appendix B  
HP E1366A/E1367A Multiplexer Registers  
Register Definitions The HP E1366A and HP E1367A RF multiplexers are register-based slave  
devices. Register definitions are:  
ID Register  
Appendix B  
HP E1366A/E1367A Multiplexer Registers 65  
 
Addressing the Registers  
To read or write to specific registers, you must use the register address.  
Since the addresses for HP 75000 Series B or Series C plug-in modules are  
A00 through A15, use the VME A16 mnemonic for the address space. The  
address space within the mainframe/command module memory map  
depends on the mainframe/command module used. For example, the address  
of the HP E1300A/E1301A Mainframe starts at 1F0000 .  
h
For the HP E1300/E1301, the A16 space is divided so modules are  
addressed only at locations beginning with C000 within A16. Each  
h
module is allocated 64 register addresses (40 ). The module base address is  
h
related to the logical address set by the logical address switch (LADDR) on  
the module:  
base address (h) = (logical addressh)*40h + C000h  
For the RF multiplexers, the factory-set logical address is 120 (78 ), so the  
h
base address = (78 )*(40 ) + C000 = DE00 . Then, for example, to address  
h
h
h
h
the Status/Control register of an RF multiplexer in an HP E1300A/E1301A,  
the register address = [A16 location] + [base address] + [register offset]  
h
h
h
= 1F0000 + DE00 + 04 = 1FDE04 .  
h
h
h
h
Reading the Registers  
You can read the following RF multiplexer registers:  
ID register (base + 00 )  
h
Device Type register (base + 02 )  
h
Status/Control register (base + 04 )  
h
Bank 0 Channel Enable register (base + 08 )  
h
h
Bank 1 Channel Enable register (base + A )  
ID/Device Type For either RF multiplexer, a read of the ID register (address base + 00 )  
h
returns FFFF since the multiplexers are manufactured by Hewlett-Packard  
and are A16 only, register-based devices. The Device Type register (base +  
h
Registers  
02 ) returns FF80 for the HP E1366A (50) multiplexer and returns FF84  
h
h
h
for the HP E1367A (75) multiplexer.  
Status/Control Each relay requires about 15 msec execution time (close to open or open to  
close) during which time the RF multiplexers are busy. A read of the  
Register  
Status/Control register (base + 04 ) returns FFFF when the module is not  
h
h
busy or returns FF7F (bit 7 is low-true) when the module is busy.  
h
Channel Enable A read of either of the two Channel Enable registers (base + 08 for bank 0  
h
or base + A for bank 1) always returns FFFF , regardless of the channel  
states.  
h
h
Registers  
66 HP E1366A/E1367A Multiplexer Registers  
Appendix B  
 
Writing to the Registers  
You can write to the following RF multiplexer registers:  
Status/Control register (base + 04 )  
h
Bank 0 Channel Enable register (base + 08 )  
h
h
Bank 1 Channel Enable register (base + A )  
Status/Control The only write allowed to the Status/Control register (base + 04 ) is to bit 0.  
h
Writing a 1” to bit 0 resets the multiplexer to its power-on state with all  
channels open and terminated and both commons open.  
Register  
Channel Enable Writes to the Channel Enable registers (base + 08 and base + A ) enabling  
h
h
you to open or close the desired channel (see Register Defintions at the  
beginning of this chapter). For example, write a 1” to bit 2 of the bank 0  
Channel Enable register to close channel 02. Or, write a 1” to bit 3 of the  
Bank 1 Channel Enable register to close channel 13. Writing a 0” to bits  
0 - 3 results in all channels open and terminated and the common open.  
Only one channel per bank can be closed at a time. Any bit pattern not  
shown in Register Defintions at the beginning of this chapter, results in the  
lowest-numbered channel being closed.  
Registers  
Appendix B  
HP E1366A/E1367A Multiplexer Registers 67  
 
68 HP E1366A/E1367A Multiplexer Registers  
Appendix B  
Appendix C  
HP E1366A/E1367A RF Multiplexer Error  
Messages  
The table below lists the error messages associated with the multiplexer  
modules programmed by SCPI. See the appropriate mainframe manual for  
a complete list of error messages.  
No.  
Title  
Potential Cause(s)  
-211 Trigger ignored  
Trigger received when scan not enabled. Trigger received after scan complete.  
Trigger too fast.  
-213 Init Ignored  
Attempting to execute an INIT command when a scan is already in progress.  
Attempting to execute a command with a parameter not applicable to the command.  
-224 Illegal parameter value  
1500 External trigger source  
already allocated  
Assigning an external trigger source to a switchbox when the trigger source has  
already been assigned to another switchbox.  
2000 Invalid card number  
Addressing a module (card) in a switchbox that is not part of the switchbox.  
2001 Invalid channel number  
Attempting to address a channel of a module in a switchbox that is not supported by  
the module (e.g., channel 99 of a multiplexer module).  
2006 Command not supported  
on this card  
Sending a command to a module (card) in a switchbox that is unsupported by the  
module.  
2008 Scan list not initialized  
Executing a scan without the INIT command.  
2009 Too many channels in  
channel list  
Attempting to address more channels than available in the switchbox.  
2012 Invalid Channel Range  
Invalid channel(s) specified in SCAN <channel_list> command. Attempting to begin  
scanning when no valid channel l t is defined.  
2600 Function not supported  
on this card  
Sending a command to a module (card) in a switchbox that is not supported by the  
module or switchbox.  
2601 Channel list required  
Sending a command requiring a channel list without the channel list.  
Appendix C  
HP E1366A/E1367A RF Multiplexer Error Messages 69  
 
70 HP E1366A/E1367A RF Multiplexer Error Messages  
Appendix C  
Index  
HP E1366A/67A RF Multiplexers User’s Manual  
Command Reference  
A
Address  
Addressing  
B
Commands  
Bank  
C
Channel  
HP E1366A/67A RF Multiplexers User’s Manual Index 71  
E
Error Message  
Examples  
Components  
F
G
H
HP-IB  
D
72 HP E1366A/67A RF Multiplexers User’s Manual Index  
I
N
O
Operation  
L
P
M
Multiplexer  
Q
Quick Reference  
R
Reading  
Registers  
HP E1366A/67A RF Multiplexers User’s Manual Index 73  
Switch  
Switchbox  
S
Scan Complete Bit  
Scanning  
T
U
V
Setting  
W
Writing  
Standard Commands for Programmable Instruments  
74 HP E1366A/67A RF Multiplexers User’s Manual Index  

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