Agilent Technologies Mouse 66001A User Manual

USER’S GUIDE

Agilent Technologies

Series 661xxA

MPS POWER MODULES

& Model 66001A MPS KEYBOARD

ꢀA

Agilent Part No. 5959-3386

Microfiche Part No. 5959-3387

Printed in Malaysia

September 2004

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SAFETY SUMMARY

The following general safety precautions must be observed during all phases of operation of this power module. Failure to

comply with these precautions or with specific warnings elsewhere in this guide violates safety standards of design,

manufacture, and intended use of the power module. Agilent Technologies assumes no liability for the customer's failure to

comply with these requirements.

GENERAL

When installed in a properly wired mainframe, this product is a Safety Class 1 instrument (provided with a protective earth terminal).

Any LEDs used in this product are Class 1 LEDs as per IEC 825-l.

This ISM device complies with Canadian ICES-001. Cet appareil ISM est conforme à la norme NMB-001 du Canada.

ENVIRONMENTAL CONDITIONS

With the exceptions noted, all instruments are intended for indoor use in an installation category II, pollution degree 2 environment.

They are designed to operate at a maximum relative humidity of 95% and at altitudes of up to 2000 meters. Refer to the specifications

tables for the ac mains voltage requirements and ambient operating temperature range.

BEFORE APPLYING POWER.

Verify that the power module line voltage switch is set to match the available line voltage.

GROUND THE INSTRUMENT.

To minimize shock hazard, the mainframe must be connected to an electrical ground. The mainframe must be connected to the ac power

supply mains through a three-conductor power cable, with the third wire firmly connected to an electrical ground (safety ground) at the

power outlet. Any interruption of the protective (grounding) conductor or disconnection of the protective earth terminal will cause a

potential shock hazard that could result in personal injury. If

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE.

Do not operate the instrument in the presence of flammable gases or fumes.

KEEP AWAY FROM LIVE CIRCUITS.

Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be made by qualified

service personnel. Do not replace components with power cable connected. Under certain conditions, dangerous voltages may exist even

with the power cable removed. To avoid injuries, always disconnect power, discharge circuits and remove external voltage sources before

touching components.

DO NOT SERVICE OR ADJUST ALONE.

Do not attempt internal service or adjustment unless another person, capable of rendering first aid and resuscitation, is present.

DO NOT EXCEED INPUT RATINGS.

This mainframe is equipped with a power line filter to reduce electromagnetic interference and must be connected to a properly grounded

receptacle to minimize electric shock hazard. Operation at line voltages or frequencies in excess of those stated on the line rating label

may cause leakage currents in excess of 5.0 mA peak.

SAFETY SYMBOLS.

The WARNING sign denotes a hazard. It calls attention to a procedure, practice, or the like, which, if not correctly

performed or adhered to, could result in personal injury. Do not proceed beyond a WARNING sign until the

indicated conditions are fully understood and met.

The CAUTION sign denotes a hazard. It calls attention to an operating procedure, or the like, which, if not correctly

performed or adhered to, could result in damage to or destruction of part or all of the product. Do not proceed

beyond a CAUTION sign until the indicated conditions are fully understood and met.

DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT.

Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification to the

instrument. Return the instrument to an Agilent Technologies Sales and Service Office for service and repair to ensure that safety

features are maintained.

Instruments that appear damaged or defective should be made inoperative and secured against unintended operation until they can be

repaired by qualified service personnel.

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SAFETY SYMBOL DEFINITIONS

Symbol

Description

Direct current

Symbol

Description

Terminal for Line conductor on permanently

installed equipment

Alternating current

Caution, risk of electric shock

Both direct and alternating current

Three-phase alternating current

Earth (ground) terminal

Caution, hot surface

Caution (refer to accompanying documents)

In position of a bi-stable push control

Protective earth (ground) terminal

Frame or chassis terminal

Out position of a bi-stable push control

On (supply)

Terminal for Neutral conductor on

permanently installed equipment

Off (supply)

Terminal is at earth potential

Standby (supply) - Units with this symbol are not

completely disconnected from ac mains when this

switch is off. To completely disconnect the unit from

ac mains, either disconnect the power cord or have a

qualified electrician install an external switch.

(Used for measurement and control

circuits designed to be operated with

one terminal at earth potential.)

Herstellerbescheinigung

Diese Information steht im Zusammenhang mit den Anforderungen der Maschinenläminformationsverordnung vom 18

Januar 1991. * Schalldruckpegel Lp <70 dB(A) * Am Arbeitsplatz * Normaler Betrieb * Nach EN 27779 (Typprufung).

Manufacturer's Declaration

This statement is provided to comply with the requirements of the German Sound Emission Directive, from 18 January

1991. * Sound Pressure Lp <70 dB(A) *At Operator Position * Normal Operation * According to EN 27779 (Type Test).

Printing History

The current edition of this guide is indicated below. Reprints of this guide containing minor corrections and updates may

have the same printing date. New editions are identified by a new printing date and, in some cases, by a new part number.

A new edition incorporates all new or corrected material since the previous edition. Changes to the guide occurring

between editions are covered by change sheets shipped with the guide.

Edition 1......Feb, Apr, Oct, 1992

....................July 1993; June 1997

....................April 2000; September 2004

This document contains proprietary information protected by copyright. All rights are reserved. No part of this document

may be photocopied, reproduced, or translated into another language without the prior consent of Agilent Technologies.

The information contained in this document is subject to change without notice.

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DECLARATION OF CONFORMITY

According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014

Manufacturer’s Name and Address

Responsible Party

Agilent Technologies, Inc.

550 Clark Drive, Suite 101

Budd Lake, New Jersey 07828

USA

Alternate Manufacturing Site

Agilent Technologies (Malaysia) Sdn. Bhd

Malaysia Manufacturing

Bayan Lepas Free Industrial Zone, PH III

11900 Penang,

Malaysia

Declares under sole responsibility that the product as originally delivered

Product Names a) Modular Power System Mainframe

b) Keyboard

c) dc Power Modules

Model Numbers a) 66000A

b) 66001A

c) 66101A; 66102A; 6103A; 66104A; 66105A; 66106A

Product Options This declaration covers all options and customized products based on the above

products.

Complies with the essential requirements of the Low Voltage Directive 73/23/EEC and the EMC

Directive 89/336/EEC (including 93/68/EEC) and carries the CE Marking accordingly.

EMC Information

ISM Group 1 Class A Emissions

As detailed in Electromagnetic Compatibility (EMC), Certificate of Conformance Number

CC/TCF/00/077 based on Technical Construction File (TCF) HPNJ4, dated

Oct. 30, 1997

Assessed by: Celestica Ltd, Appointed Competent Body

Westfields House, West Avenue

Kidsgrove, Stoke-on-Trent

Straffordshire, ST7 1TL

United Kingdom

Safety Information

and Conforms to the following safety standards.

IEC 61010-1:2001 / EN 61010-1:2001

UL 1244

CSA C22.2 No. 1010.1:1992

This DoC applies to above-listed products placed on the EU market after:

January 1, 2004

Date

Bill Darcy/ Regulations Manager

For further information, please contact your local Agilent Technologies sales office, agent or distributor, or

Agilent Technologies Deutschland GmbH, Herrenberger Straβe 130, D71034 Böblingen, Germany

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Table of Contents

General Information

Introduction ..................................................................................................................................................9

Safety Considerations...................................................................................................................................9

Instrument Identification ..............................................................................................................................9

Options .........................................................................................................................................................9

Accessories.................................................................................................................................................10

Description .................................................................................................................................................10

Programming...........................................................................................................................................10

Output Characteristic...............................................................................................................................10

Specifications and Supplemental Characteristics .......................................................................................11

Installation

Inspection ...................................................................................................................................................17

Damage....................................................................................................................................................17

Items Supplied.........................................................................................................................................17

Switches .....................................................................................................................................................17

Line Voltage Switches.............................................................................................................................17

Configuration Switch...............................................................................................................................17

Remote Inhibit (RI) Function Switches................................................................................................19

Display Function Switch.......................................................................................................................19

Calibration Function Switch.................................................................................................................19

Power On Function Switch...................................................................................................................19

Installing the Module in the Mainframe .....................................................................................................20

Connecting the Load...................................................................................................................................20

Output Connector ....................................................................................................................................20

Output Connections..............................................................................................................................21

Selecting the Proper Wire Size.............................................................................................................21

Output Isolation....................................................................................................................................21

Local Voltage Sensing.............................................................................................................................21

Remote Voltage Sensing .........................................................................................................................22

Voltage Readback ................................................................................................................................22

Output Rating .......................................................................................................................................23

Output Noise ........................................................................................................................................23

Parallel Operation....................................................................................................................................23

Series Operation ......................................................................................................................................24

Multiple Loads ........................................................................................................................................25

Optional Relay Connector .......................................................................................................................25

Capacitive Loads .....................................................................................................................................26

Inductive Loads.......................................................................................................................................26

OVP Considerations................................................................................................................................26

Battery Charging .....................................................................................................................................26

Connecting the Controller ..........................................................................................................................26

Turn-On Checkout

Introduction ................................................................................................................................................27

Module Panel Display ................................................................................................................................27

Module Turn-On State................................................................................................................................28

Checking Basic Module Functions.............................................................................................................28

In Case of Trouble......................................................................................................................................29

Mainframe Failure...................................................................................................................................29

Module Line Fuse....................................................................................................................................29

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Table of Contents (continued)

Module Output Connector.......................................................................................................................29

Error Messages...................................................................................................................................29-30

Basic Power Module Commands

Introduction ................................................................................................................................................31

GPIB Controller ......................................................................................................................................31

MPS Keyboard ........................................................................................................................................31

Synopsis of Commands..............................................................................................................................31

Controlling the Output State....................................................................................................................32

Controlling Protection Functions.............................................................................................................32

Controlling Fixed-Mode Output..............................................................................................................32

Controlling List-Mode Output.................................................................................................................33

Controlling Triggers................................................................................................................................33

Using RI/DFI Functions ..........................................................................................................................34

Changing the Power-On State ....................................................................................................................34

Calibration

Introduction................................................................................................................................................35

Enabling or Disabling the Calibration Function .........................................................................................35

Hardware Control....................................................................................................................................35

Software Control .....................................................................................................................................35

Changing the Calibration Password............................................................................................................35

Performing a Calibration ............................................................................................................................35

Equipment Required................................................................................................................................36

Calibrating Voltage .................................................................................................................................36

Calibrating Current..................................................................................................................................37

Using the CAL:AUTO Command...........................................................................................................38

Recovering the Factory Calibration Constants ...........................................................................................38

Recovering from a Lost Calibration Password...........................................................................................38

Calibration Error Messages ........................................................................................................................38

Agilent BASIC Calibration Program............................................................................................................38

Using the Agilent 66001A MPS Keyboard

Introduction ................................................................................................................................................41

Connecting the Keyboard...........................................................................................................................41

Keyboard Description.................................................................................................................................42

Using the Display.......................................................................................................................................45

Changing or Entering Values...................................................................................................................45

Displaying Status.....................................................................................................................................45

Sending SCPI Commands ..........................................................................................................................46

Command Example .................................................................................................................................46

Query Example........................................................................................................................................47

Error Example .........................................................................................................................................48

SCPI Command Tree..................................................................................................................................50

Index...............................................................................................................................................51

Agilent Sales and Support Offices ..............................................................................................54

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General Information

Introduction

This guide describes how to install, check out, operate, and calibrate the Agilent Series 661xxA power modules used in the

Agilent 66000 Modular Power System. Programming the power module from the optional Agilent 66001A Keyboard is

described in Appendix B of this guide. Programming the power module over the GPIB bus is covered in the module

Programming Guide (see "Related Documents", below). Setting the GPIB address is described in the mainframe

Installation Guide. For complete verification procedures, see the module Service Guide (listed under "Related Documents",

below). The Agilent 66000A Modular Power System Product Note has specific application programs in several DOS-

compatible languages and GPIB interface drivers.

Related Documents

Document

Agilent Part No.

5959-3362

Programming Guide for Agilent Series 66lxxA MPS Power Modules

Installation Guide for DC Module Connectors

5959-3366

Service Guide for Agilent Series 66lxxA Power Modules

Installation Guide for Agilent 66000A Modular Power System Mainframe

Service Guide for Agilent 66000A Modular Power System Mainframe

Quick Reference Card for Optional Agilent 66001A MPS Keyboard*

Agilent 66000A Modular Power System Product Note

5959-3364

66000-90001

66000-90003

66001-90001

5988-2800EN

* A Quick Reference Card is shipped with each Agilent 66000 mainframe.

Safety Considerations

When properly installed in the mainframe, the power module is part of a subsystem that constitutes a Safety Class 1

instrument. The power module has a protective earth connection that is completed through a contact spring in the

mainframe backplane. When the power module is moved in and out of the mainframe, the earth ground connection is made

before ac power is connected and is removed after ac power is disconnected.

Instrument Identification

Agilent Technologies instruments are identified by a 10-digit serial number. The format is described as follows: first two

letters indicate the country of manufacture. The next four digits are a code that identify either the date of manufacture or of a

significant design change. The last four digits are a sequential number assigned to each instrument.

Item

3648

0101

Description

The first two letters indicates the country of manufacture, where US = USA; MY = Malaysia; SG = Singapore.

This is a code that identifies either the date of manufacture or the date of a significant design change.

The last four digits are a unique number assigned to each power supply.

Options

Option

760

0L2

Description

Output Connector with Isolation/Polarity Reversal Relays

Extra set of Documentation

0B3

Series 661xxA Service Guide

General Information

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Accessories

Agilent No.

Description

34551A

Rack mount for Agilent 66001A MPS keyboard

Description

The Agilent 66lxxA Series Power Modules are used in the Agilent 66000 Modular Power System (MPS) mainframe to

provide a range of dc output voltages and currents. The modules are installed or removed from the front of the mainframe

without the need for disconnecting any wires. Modules may be connected in series or parallel to provide increased output

voltages or currents. The modules can be equipped with optional isolation and polarity reversal relays that are built into the

module output connector.

The power module front panel has digital readouts of output voltage and current. It also has annunciators that indicate:

constant voltage, constant current, or unregulated operation

activation of a protection circuit

disabling of the output

remote operation (addressed by the controller)

Programming

The power module is programmed over the GPIB from a controller using SCPI (Standard Commands for Programmable

Instruments). This makes power module programs compatible with those of all other instruments controlled with this

language. Among the functions that can be programmed are output voltage and current, OVP (overvoltage protection),

OCP (overcurrent protection), status registers, output relays, and output voltage and current calibration.

In addition, the power module has programmable trigger, list, and RI/DFI (remote inhibit/discrete fault indicator)

subsystems. Triggers can occur from signals at the mainframe TRIG IN jack or from selected internal events. The list

subsystem generates preprogrammed sequential outputs in response to triggers. The RI/DFI subsystem generates an output

on the mainframe FLT line in response to selected internal events or turns off the output in response to an input on the

mainframe INH line.

The power module also can be programmed locally from the optional Agilent 66001A MPS Keyboard. The keyboard has

an alphabetical command menu for all power module SCPI commands. By scrolling through the menu and entering the

appropriate parameters, commands may be created for development or debugging.

Output Characteristic

The power module can operate in either CV (constant voltage) or CC (constant current) mode over its voltage and current

output range (see Table 1-1). The operating locus (see Output Characteristic Curve in Table 1-2) shows a single-range,

limited two-quadrant capability. The operating point is determined by the voltage setting (V_S), the current setting (I_S) and

the load impedance (R_l). Two operating points are shown. Point 1 is defined by the load line cutting the operating locus in

the CV region, which defines the CV mode (curve A). In this mode, the power module will maintain the voltage at V_Sfor

varying load currents (determined by V÷R_l) up to I_S. If the load demands a current greater than I_S, the power module

switches to CC mode. CC mode (curve B) is defined by the load line cutting the operating locus in the CC region (see Point

2). Under this condition, the power module maintains the current at I_Sat some voltage determined by I_Sx R_l.

10 General Information

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When the power module is operated beyond either rated output, the performance specifications are not guaranteed, although

typical performance may be good. Operation in quadrant 2 is limited to about 10% of the maximum rated positive output

current. This allows the power module to sink current for more rapid downprogramming in the CV mode.

Specifications and Supplemental Characteristics

Table 1-1 lists the specifications of the power modules. Specifications are warranted over the specified temperature range.

Table 1-2 lists the supplemental characteristics, which are not warranted but are descriptions of performance determined

either by design or type testing.

Table 1-1. Performance Specifications

Agilent Model

Parameter

66101A

66102A

66103A

66104A

66105A

66106A

Specifications are warranted over the temperature range 0 to 55° C with a resistive load and the output connected for local

sensing. Derate the output current 1% per °C from 40° C to 55°C.

Output Ratings

Voltage:

Current:

Power:

0 - 8 V

0 - 16 A

128 W

0 - 20 V

0 - 7.5 A

150 W

0 - 35 V

0 - 4.5 A

157.5 W

0 - 60 V

0 - 2.5 A

150 W

0 - 120 V

0 - 1.25 A

150 W

0 - 200 V

0 - 0.75 A

150 W

Programming Accuracy @

calibration temperature ± 5 °C)*

Voltage:

Current:

0.03% +

3 mV

6 mA

8 mV

3 mA

13 mV

2 mA

27 mV

1.2 mA

54 mV

0.6 mA

90 mV

0.4 mA

*Factory calibration temperature =

25 °C

Ripple & Noise (from 20 Hz to 20

MHz with outputs ungrounded, or with

either output terminal grounded)

Constant Voltage:

Constant Current:

rms

p-p

rms

2 mV

5 mV

8 mA

3 mV

7 mV

4 mA

5 mV

10 mV

2 mA

9 mV

15 mV

1 mA

18 mV

25 mV

1 mA

30 mV

50 mV

1 mA

Readback Accuracy

With respect to actual output @

calibration temperature following self

calibration.*

Voltage:

Current:

0.02% +

2 mV

6 mA

5 mV

3 mA

8 mV

2 mA

16 mV

1 mA

32 mV

0.6 mA

54 mV

0.3 mA

*Factory calibration temperature =

25 °C

Load Regulation (change in output

voltage or current for any load change

within ratings)

Voltage:

Current:

1 mV

0.5 mA

1 mV

0.2 mA

1 mV

0.2 mA

2 mV

0.1 mA

4 mV

50 µA

7 mV

30 µA

General Information 11

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Table 1-1. Performance Specifications (continued)

Agilent Model

Parameter

Line Regulation (change in output

voltage or current for any line change

within ratings)

66101A

66102A

66103A

66104A

66105A

66106A

Voltage:

Current:

0.5 mV

0.75 mA

0.5 mV

0.5. mA

1 mV

0.3 mA

2 mV

0.1 mA

3 mV

50 µA

5 mV

30 µA

Transient Response Time (for output

voltage to recover to within 100 mV of

its previous level following a step

change in load current that is up to 10%

of the power module rated output

current.

< 1 ms

AC Input Ratings (selectable via

module switch- see Chapter 2)

Nominal line voltage (Vac)

115 V switch setting

230 V switch setting

Frequency range:

87- 132 Vac

174- 250 Vac

47 - 63 Hz

Output Terminal Isolation (maximum,

from output to the mainframe chassis

ground):

±240 Vdc

Table 1-2. Supplemental Characteristics

Agilent Model

Parameter

Output Programming Range

(Maximum programmable values):

Voltage:

Current:

OV Protection:

66101A

66102A

66103A

66104A

66105A

66106A

8.190 V

16.380 A

9.6 V

20.475 V

7.678 A

24.0 V

35.831 V

4.607 A

42.0 V

61.425 V

2.559 A

72.0 V

122.85 V

1.280 A

144.0 V

204.75 V

0.768 A

240.0 V

Average Programming Resolution

Voltage:

Current:

2.4 mV

4.6 mA

50 mV

5.9 mV

2.3 mA

120 mV

500 mV

10.4 mV

1.4 mA

200 mV

800 mV

18.0 mV

0.75 mA

375 mV

1 V

36.0 mV

0.39 mA

750 mV

1.5 V

60.0 mV

0.23 mA

1.25 V

2.5 V

OV Protection:

OVP Accuracy (@ calibration

temperature ±5° C):*

* Factory calibration temp = 25° C

250 mV

Readback Resolution

Voltage:

Current:

0.305 mV

0.587 mA

0.763 mV

0.293 mA

1.335 mV

0.169 mA

2.289 mV

0.099 mA

4.577 mV

0.049 mA

7.629 mV

0.030 mA

Drift (Temperature Stability)

(following a 30-minute warmup, change

in output over 8 hours under constant

line, load, and ambient temperature)

Voltage:

Current:

0.02% +

0.4 mV

8 mA

1 mV

5 mA

2 mV

2.5 mA

3 mV

1.3 mA

6 mV

0.63 mA

10 mV

0.38 mA

12 General Information

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Table 1-2. Supplemental Characteristics (continued)

Agilent Model

Parameter

Temperature Coefficients (change in

output per °C after a 30-minute

warmup)

66101A

66102A

66103A

66104A

66105A

66106A

Output Voltage:

Output Current:

Voltage Readback:

± Current Readback:

OV Protection:

30 ppm +

20 ppm +

0.1 mV

0.2 mA

0.1 mV

0.2 mA

1 mV

0.2 mV

0.1 mA

0.2 mV

0.1 mA

2 mV

0.3 mV

0.05 mA

0.2 mV

0.05 mA

4 mV

0.6 mV

0.03 mA

0.7 mV

0.02 mA

8 mV

1.1 mV

0.01 mA

0.7 mV

0.02 mA

16 mV

1.8 mV

0.006 mA

1.1 mV

0.02 mA

30 mV

Maximum Reverse Current

(maximum current, without damage,

that the power module will withstand

while turned on and with the dc output

reverse biased by an external dc

source):

16 A

7.5 A

4.5 A

2.5 A

1.25 A

0.75 A

Typical Output Common Mode Noise

Current*

rms:

0.5 mA

peak-peak:

5 mA

* Referenced to mainframe chassis ground.

Remote Sensing Capability

Voltage drop per lead:

Up to 1/2 of rated output voltage

Load voltage:

Subtract voltage drop in load leads from specified output voltage rating

Load Regulation:

For each 1-volt change in the negative output lead due to load current change,

add 2 mV to the voltage load regulation specification (see Table 1-1).

Command Processing Time (average

time for output to begin to change after

receipt of digital data when the power

module is connected directly to the

GPIB):

20 ms

Output Voltage Programming

Response Time*

Time for output to change from 10% to

90% of its total excursion:

< 20 ms

Time for output to change from 90% to

10% of its total excursion:

< 20 ms

< 50 ms

Time for output voltage to settle to

within 0.1% of the final value:

120 ms

* Excluding command processing time

General Information 13

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Table 1-2. Supplemental Characteristics (continued)

Agilent Model

Parameter

Trigger Response Time (average time

for the output voltage or current to

begin to change upon receipt of an

external trigger)

66101A

66102A

66103A

66104A

66105A

66106A

With GPIB activity:

5 ms

3 ms

Without GPIB activity:

Trigger Maximum Frequency (for

repetitive external triggering, the

maximum frequency for which the

Trigger Response Time is valid)

With GPIB activity:

75 Hz

85 Hz

Without GPIB activity:

Dwell Time

Programmable range:

Resolution:

10 ms to 65 s

2 ms

Accuracy

With GPIB activity:

Without GPIB activity:

± 5 ms

± 2.5 ms

Downprogramming:

Monotonicity:

Active downprogrammer sinks approximately 10% of rated output current

Output is monotonic over entire rated voltage, current, and temperature range

GPIB Interface Capabilities

Interface Signals (see IEEE 488.1):

Programming Language:

Serial Link Capabilities (maximum

power modules sharing one GPIB

primary address)

AH1,C0,DC1, DT1,EI,LE4,PP0, RL1,SH1,SR1,TE6

SCPI (Standard Commands for Programmable Instruments)

Savable States

Nonvolatile memory locations:

Volatile memory locations:

Nonvolatile memory write cycles:

Recommended Calibration Interval:

Safety Compliance

Complies with:

Designed to comply with:

RFI Suppression (designed to comply

with):

5 (0 through 4)

5 (5 through 9)

40,000 (typical)

1 year

CSA 22.2 No.231 & IEC 348

UL 1244 & VDE 0411

FTZ 1046/84, Level B

Dimensions

Width:

Height:

48.3 mm (1.9 in)

141.2 mm (5.6 in)

Depth

Pull tab inserted:

Pull tab extended:

571.4 mm (22.5 in)

606.4 mm (23.8 in)

Weight

Net:

Shipping:

2.7 kg (6 lb)

4.1 kg (9 lb)

14 General Information

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Table 1-2. Supplemental Characteristics (continued)

Agilent Model Number and Parameter Value

Parameter

Output Characteristic Curve:

Table 1-3. Replaceable Parts List

Description

Agilent Part No.

Cable assembly, mainframe GPIB

0.5 meters (1.6 ft)

1 meter (3.3 ft)

10833D

10833A

2 meters (6.6 ft)

10833B

4 meters (13.2 ft)

10833C

Cable assembly, mainframe serial link

Fuse, ac-line, 6 A

5080-2148

2110-0056

5060-3386

5060-3387

5060-3351

Output connector, standard

Output connector, with relays

Output connector converter board (converts

5060-3386 to 5060-3387)

Plug, mainframe INH/RFI input

Resistor, calibration

1252-1488

(see Appendix A)

General Information 15

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Installation

Inspection

Damage

When you receive your power module, inspect it for any obvious damage that may have occurred during shipment. If there

is damage, notify the shipping carrier and the nearest Agilent Sales and Support Office immediately. Warranty information

is printed in the front of this guide.

Items Supplied

In addition to this manual, check that the following items are included with each power module (see Table 1-3 for part

numbers):

•

One output connector

One Series 66lxxA Programming Guide

One or more Manual Change Sheets may be included with each guide. If there are change sheets, make the

indicated corrections to the guides.

Switches

Before inserting the power module in the mainframe, read the following information to determine if you need to change any

of the switch settings.

Line Voltage Switches

Figure 2-1 shows the location of the line voltage switches and the ac line fuse. The line voltage switches are shipped in

the 230-volt position. If required, use a flat-bladed screwdriver or similar tool to move both switches to the proper position

for your nominal line voltage.

Line Voltage

Switch Position

110, 120 Vac

115

230

200, 220, 230, 240 Vac

Note

If you change the line switch position, remember to also correct the line voltage label on the rear of the

mainframe. The mainframe contains no line voltage switches.

Configuration Switch

Figure 2-2 shows the location of the power module configuration switch. Table 2-1 indicates the functions of the switch and

the factory-default settings. If you need to change any of the settings, refer to the applicable function.

Installation 17

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Figure 2-1. Power Module Line Fuse and Switches

Figure 2-2. Power Module Configuration Switch

Table 2-1. Settings for Power Module Configuration Switch

Required Switch Setting

Desired Function

RI disabled

RI unlatched (live)

RI latching †

Display disabled

Display enabled †

Inhibit calibration

Factory calibration

Normal calibration †

Power on state is *RCL 0

Power on state is *RST†

†= factory default setting "0" Off or open

"1" On or closed.

*Positions 7 and 8 are for service functions. For normal operation, they must be set to 1.

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Remote Inhibit (RI) Function Switches

This function allows the power module outputs to be shut down from a signal (low-true TTL level) applied to the mainframe

INH input. The INH input is internally connected to the mainframe remote inhibit (RI) line. This line is normally high and

is distributed to all power modules in the mainframe. An external switch closure that shorts the mainframe INH input is

detected by the power module as an RI signal.

Note

See "Chapter 3 - Connections" in the mainframe Installation Guide for more information on external INH

connections.

Within each power module, the RI signal is applied to the RI section of the configuration switch (see Figure 2-2). The RI

switch allows you to select one of the following responses to the RI input signal:

Switch Setting

RI disabled

RI Action

The module ignores the RI input signal

RI latched

The module shuts down and remains shut down when the RI signal goes true. A

software command is required to restore the output (see "Chapter 4 - Basic

Power Module Commands").

RI nonlatched (real-time)

The module shuts down only as long as the RI signal is true (TTL low). The

output is restored when the RI signal goes false (TTL high).

Display Function Switch

A single switch configures the display function. Use it to permanently turn the power module voltage and current display

indicators off or on (the annunciators are unaffected by this switch). If the switch is left in the ON position, the display may

be turned on or off by software commands (see the power module Programming Guide).

Calibration Function Switches

The calibration switches allow you to select one of the following modes of calibration:

Switch Setting

Normal calibration

Factory calibration

Inhibit calibration

Calibration Mode

Permits normal calibration (requires entry of a password)

Restores original factory calibration (no password is required)

Prevents calibration

The factory position is useful if the power module has been miscalibrated or if the calibration password has been lost.

Power-On Function Switch

This switch allows you to determine the operating state of the power module when it is turned on. With the switch set to 1

(on), the power module will be in the factory-default reset state (see *RST in "Chapter 3 - Language Dictionary" of the

power module Programming Guide). If you move the switch to 0, the power module will turn on to whatever state you save

to memory location 0. See "Chapter 4 - Basic Power Module Commands" for more information.

Installation 19

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Installing The Module In The Mainframe

Figure 2-3. Power Module Installation

Note

A fully loaded mainframe can weigh over 36 kg (80 lbs). Install the mainframe into the rack (see the

"Mainframe Users Guide") before installing the modules into the mainframe.

1. Turn off the mainframe power switch.

2. Make certain the pull tab extends from the module (see Figure 2-3).

3. Slide the module into the mainframe slot. You may use any available slot.

4. Push the module into the backplane connector until you feel the module connector snap into the backplane connector.

5. Push the lock tab into the front of the module. If the module is not properly plugged into the backplane connector, the

lock tab will not retract into the module.

6. If desired, mark or label the power module with its slot address.

Important

Marking or labeling the power module will prevent replacing it in the wrong slot if it is subsequently

removed from the mainframe. Also, with two mainframes linked together, a slot can be either of two

numbers, depending on whether it is in the main or the auxiliary mainframe (see "Connecting the

Controller" in this chapter).

Connecting The Load

Output Connector

One output connector (see Table 1-3) is shipped with each power module. This can be either a standard or relay type. The

Installation Guide supplied with the connector shows how to open the connector, connect the wires, and secure the

connector to the mainframe.

20 Installation

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Output Connections

Before making the actual connections, you must decide on the system configuration. The following factors are described in

the rest of this chapter:

■

using the correct wire size

maintaining isolation guidelines

selecting local or remote voltage sensing

connecting modules in series or in parallel

using output relays

connecting to capacitive or inductive loads

Selecting the Proper Wire Size

Fire Hazard. To satisfy safety requirements, load wires must be large enough not to overheat when

carrying the short-circuit output current of the device connected to the power module. See Table 2-2

for the characteristics of AWG (American Wire Gage) copper wire.

Table 2-2. Current Capacity and Resistance of Stranded Copper Conductors

AWG No.

*Ampacity

**Resistance

AWG No. *Ampacity

**Resistance

(Ω/m

Ω/ft)

(Ω/m

Ω/ft)

0.00165

8.33

15.4

19.4

31.2

0.0345

0.0217

0.0137

0.0086

0.01054

0.00663

0.00417

0.00262

0.0054

*In free air

**At 20 °C

Output Isolation

The output connector ground terminal is a low-noise ground provided for convenience, such as for

grounding wire shields. This terminal is not designed to function as an equipment safety ground.

The power module output terminals are isolated from earth ground. If required, either output terminal may be grounded.

The potential between either output terminal and ground must not exceed ±240 Vdc. Failure to

observe this restriction may damage the power module.

Local Voltage Sensing

Figure 2-4A shows the load connection for local sensing. There is a switch on the output connector that selects either local

or remote sensing of the output voltage. The connector is shipped with the switch in the LOCAL position. In order to

configure the output for local sensing, make certain this switch is set to LOCAL.

Note The position of the Local/Remote switch also can be determined by software (see

VOLT:SENS:SOUR? in "Chapter 3 - Language Dictionary" of the Programming Guide).

With local sensing, the power module voltage readback circuit senses the voltage at the output terminals. Since this does

not compensate for voltage drops in the terminal screw connections and output leads, use Local sensing only in applications

requiring low output currents or where the load regulation is not critical.

Installation 21

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Remote Voltage Sensing

Figure 2-4B shows the wiring for remote sensing. There is a switch on the output connector that selects either local or

remote sensing of the output voltage. To configure the output for remote sensing, do the following:

■

Connect sense leads to the load

Make certain that the connector switch is set to REMOTE

Note

If you leave the connector switch in LOCAL, the power module will regulate the programmed voltage at

the connector, not at the load.

Because they do not carry load current, you may use smaller gauge wire for the remote sense leads.

Be careful to avoid open circuits in the sense leads, such as leaving the output connector sense switch in the Local position.

If this happens, the power module will regulate at its output terminals instead of at the load.

Note

If the sense terminals are left open, the voltage at the output terminals will increase approximately 3 to 5%

over the programmed value. The readback voltage will not indicate this increase because readback is

measured at the sense terminals.

Figure 2-4. Load Connection

The dashed lines in the connection drawings illustrate remote sense connections. In this case, the remote sense terminals of

the power module are connected to the load rather than the output terminals. This allows the power module to automatically

compensate for the voltage drop in the load leads as well as to accurately read back the voltage at the load. In remote-sense

applications, the voltage readback from across the load is not the output voltage of the power module. The actual output

voltage is the sum of the load voltage and the voltage drop in the load lead. Keep this output voltage within the power

module’s maximum voltage rating. Failure to do this may result in an unregulated condition, especially when the line

voltage is low.

Voltage Readback

In remote sense applications, the voltage readback occurs directly at the load. This allows the power module to

automatically compensate for the voltage drop in the load leads and to provide an accurate voltage readback directly across

the load.

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Output Rating

The rated output voltage and current specified in Table 1-1 applies at the output terminals of the power module. With

remote sensing, the power module must increase its output to compensate for voltage dropped in the load leads. If you

attempt to provide full rated output voltage at the sense terminals (load), the power module’s output voltage may exceed its

maximum rating. This may trip the OV protection circuit, which senses the voltage at the output terminals, or cause an

unregulated output condition, particularly when the ac line voltage is low.

Output Noise

Noise picked up by the sense leads may appear at the output of the power module and can adversely affect the load

regulation. To minimize noise pickup, twist the sense leads and route them parallel and close to the load leads. It may be

necessary to use shielded sense leads in noisy environments. If you do, ground the shield only at the output connector

ground screw. Do not use the shield as one of the sense leads.

Parallel Operation

Power modules may be connected in parallel to obtain increased output current. The power modules must be individually

programmed; they do not function in the autoparallel mode that is commonly used by many Agilent power supplies.

Figure 2-5 shows two power modules connected in parallel. You must keep the same impedance to the load by using leads

of equal length and wire size from each module to the load. Select one module (usually the one with the lesser current

capacity) to operate in the "CV Mode". The other module then must operate in the "CC Mode" module. If you are using

remote sensing, connect the sense leads to the module operating in the CV mode.

Since you must program one module to operate in CV mode and the other to operate in CC mode, refer to the output

characteristic curve shown at the end of Chapter 1 to see what this means. Curve shows a module operating in CV mode;

its output voltage remains constant over the range of its operating current. Curve ô shows a module operating in CC mode;

its output current remains constant over the range of its operating voltage.

Figure 2-5. Connecting Power Modules in Parallel

For proper parallel operation, observe the following rules:

1. Program both module outputs OFF.

2. Program the CV mode module for the desired output voltage.

3. Program the CV mode module’s OVP voltage to the desired value; always higher than the output voltage.

4. Program the output and OVP voltages of the CC module slightly higher (about 1 volt) than those of the CV module.

This is to ensure that the CC module stays in CC mode.

Installation 23

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5. In order to maintain proper regulation, the load must always draw at least as much current as is programmed for the

module that is in CC mode. You can maintain regulation over a range of current only as long as this condition remains

true.

6. As near as is permitted by condition 5, program the current levels of both modules for a balanced distribution of the

total output current. Do not program the CV module near its maximum output current level.

7. Program the outputs of both modules ON.

8. When the system is operating, observe that the CV annunciator of the CV module stays on and the CC annunciator on

the CC module stays on. If not, repeat steps 1 through 7.

9. Once the modules are properly set up, do all subsequent voltage programming from the CV module; the CC

module will track that module.

Remember that although the CV module is controlling the output voltage, the CC module is

programmed to a slightly higher voltage. Do not allow the CC module to go into CV mode. Do not

program the CV module to 0 volts without first disabling the outputs of both power modules.

Otherwise, the CV module could sink up to 10% of its rated output current from the CC module.

As an example, assume that an Agilent 66102A (20 V @ 7.5 A) and an Agilent 66103A (35 V @ 4.5 A) are connected in

parallel to supply a load of 10 amperes at 18 volts. The Agilent 66102A is selected as CC mode module and will supply

approximately 7.6 A, maximum. The Agilent 66103A will be the CV module and will supply the remaining current (2.4 A).

When the two modules are operated in parallel, you may expect the system to regulate at 18 Volts and 10 amperes as long as

the load current remains above 7.6 amperes (see rule 5, above).

The following program shows how to program the two power modules. Generic code (SCPI commands) are shown; they

may be sent either from the keyboard or from a GPIB controller.

OUTP OFF

Send to both modules

VOLT:LEV 18

VOLT:PROT 18.5

CURR:LEV 2.4

Program the CV mode module

VOLT:LEV 19

Program the CC mode module

VOLT:PROT 19.5

CURR:LEV MAX

OUTP ON

Restore the outputs of both modules

Series Operation

To prevent damage to the equipment, floating voltages must not exceed 240 Vdc. No output terminal

may be more than 240 V from chassis ground.

Figure 2-6 shows how the outputs of two power modules may be connected in series to increase the output voltage.

Connect only power modules that have the same maximum output current ratings. It is recommended that you set up

both modules to operate in CV mode with their current outputs equal to the full load current. If the external load is a

storage device, such as a battery or large capacitance, be careful how you shut down the system. For example, turning off

just one module could damage the remaining module by subjecting it to double its maximum output voltage from the storage

device.

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Figure 2-6. Connecting Power Modules in Series

Each power module has a reverse voltage protection diode across its output. If a reverse voltage is

applied, the power module has no control over the current through this diode. To avoid damaging the

power module, never connect it to a reverse voltage that can force it to conduct current in excess of

the power module’s maximum reverse current (see Table 1-2).

Multiple Loads

When connecting multiple loads to the power module with local sensing, use a separate pair of wires for each load (see

Figure 2-7). Each pair of wires should be as short as possible and twisted or bundled to reduce lead inductance and noise

pickup. If cabling or terminal considerations require the use of distribution terminals located outside the output connector,

then remote voltage sensing is recommended. Connect the sense leads either at the distribution terminals or directly at one

of the loads if it is more critical than the others.

Figure 2-7. Connecting Multiple Loads

Optional Relay Connector

If you are using the Option 760 output connector with isolation or polarity reversal relays, the output and sense lead

terminal connections are the same as those of the standard output connector. When the output connector Remote/Local

switch is in Remote, both the output leads and the sense leads are under relay control. An existing standard connector can

be converted into a relay connector. The Installation Guide provided with the connector (see "Related Documents" in

Chapter 1) includes instructions for doing this.

Capacitive Loads

Installation 25

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The power module is designed to be stable for load capacitances up to the following values:

Agilent 66101A 50,000 µF

Agilent 66102A 20,000 µF

Agilent 66103A 10,000 µF

Agilent 66104A 4,500 µF

Agilent 66105A 2,750 µF

Agilent 66106A 1,650 µF

Inductive Loads

You may safely connect the power module output to inductive loads up to 100 mH. (Higher inductances are possible with a

modified module. Consult the factory for details.)

OVP Considerations

The OVP circuit senses the voltage at the output terminals, not at the sense terminals. Therefore the voltage sensed by the

OVP circuit can be significantly higher than the voltage being regulated at the load. You must program the OVP trip

voltage high enough to compensate for the expected drop from the power module output to the load.

Battery Charging

The power module OVP trip circuit has a downprogrammer that discharges the output whenever OVP trips. If the output is

connected to a battery and the OVP is tripped (or the power module voltage is programmed below the battery voltage), the

power module will sink current from the battery. The down programmer limits the value of this current to no more than

10% of the power module’s maximum rated output current.

Connecting The Controller

The Agilent 66000A Mainframe has a GPIB port for connection to the controller. Each power module has a GPIB primary

address determined by a switch on the mainframe, and a GPIB subaddress determined by the mainframe slot in which the

module is installed. If the mainframe GPIB address is set to 705, this becomes the power module’s primary address.

The Agilent 66000A Mainframe mode switch determines the IEEE 488 secondary addresses (also referred to as

subaddresses) of the modules that are installed in the mainframe. With the mainframe mode switch set to MAIN, modules

are assigned secondary addresses of 00 to 07, which correspond to the slot locations indicated on the mainframe. The

mainframe mode switch must be set to MAIN when the mainframe is connected directly to the GPIB. For example, if a

module is installed in slot 3 of a mainframe that is set to GPIB address 705, the complete address of the module is 70503.

The mainframe mode switch must be set to AUX (auxiliary) when the mainframe is serially-linked to another mainframe

that is directly connected to the GPIB. In mainframes that have the mode switch set to AUX, modules are assigned

secondary addresses of 08 to 15. Secondary address 08 corresponds to slot location 0 on the mainframe and secondary

address 15 corresponds to slot location 7 on the mainframe. For example, if a module is installed in slot 3 of a mainframe

that is serially linked to another mainframe at GPIB address 705, the complete address of the module is 70511.

Module Slot Locations/Addresses

Mainframe Mode Switch = MAIN

Mainframe Mode Switch = AUX

Slot Location

Secondary Address

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15

For details concerning GPIB cabling and addressing, see "Chapter 2 - Installation" in the Agilent 66000A Mainframe Users

Guide.

26 Installation

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Turn-On Checkout

Introduction

This chapter provides a quick test of the power module functions. See "Chapter 4 - Basic Power Module Commands" for

more details of power module operation.

Note

These procedures assume you have checked and, if required, correctly set the following switches for each

module:

•

the line voltage switch (see Figure 2-1)

the configuration switch (see Table 2-2)

the output connector Local/Remote switch

The procedures for doing this are given in Chapter 2.

Module Panel Display

The power module display provides the information shown in Table 3-1. There are no operating controls on the power

module.

Table 3-1. Power Module Front Panel Display

INDICATOR

VOLTS

AMPS

Addr

Unr

FUNCTION

Digital readout of output voltage

Digital readout of output current

Lights when power module is in constant voltage mode

Lights when power module is in constant current mode

Lights when power module is addressed over GPIB

Lights when power module output is unregulated

Lights when power module output is disabled

Lights when power module protection circuit is activated (overvoltage,

overcurrent, overtemperature, or remote inhibit)

Dis

Prot

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Power Module Turn-On State

When you turn on the mainframe, the power module goes through a self-test. All front panel readout digits and

annunciators turn on briefly. The panel then remains in the state shown in Table 3-1A.

Note

The figure assumes the power module still retains its factory default turn-on state. You can change this

state if desired (see "Chapter 4 - Basic Power Module Commands").

Checking Basic Module Functions

The power module is designed for remote programming over the GPIB. It also can be locally programmed from the

optional Agilent 66001A MPS Keyboard. Table 3-2 gives the SCPI commands for the remotely programmed tests. You

can send these same commands from the keyboard (see "Appendix B").

Table 3-2. Testing Basic Functions with SCPI Commands

Command

Action

Display Response

VOLTS

AMPS

Addr* Dis Prot

Output Voltage (Disconnect Load)

VOLT 5.1 Set output voltage to 5.1 V

OUTP ON

0.00

5. 10

0.00

Off

Enable the output

Overvoltage Protection

VOLT:PROT 4.9

Activate OVP circuit (by

setting protection voltage

below output voltage)

0.00

Off

VOLT:PROT MAX Clear OVP circuit

OUTP:PROT:CLE Clear OVP circuit

5. 10

0.00

Off

Save and Recall Functions

Save present state to

location 5

*SAV 5

5.10

0.00

Off

VOLT 3.55

OUTP OFF

*SAV 6

Set output voltage to 3.55 V

3.55

0.00

Off

Turn off the output

Save present state to

location 6

*RCL 5

*RCL 6

Restore state 5

Restore state 6

5.10

0.00

Off

Output Current (With output disabled, short the

output terminals with a wire size sufficient to carry

the maximum current of the module.)

CURR 3.1

OUTP ON

Set output current to 3.1

amps

Enable the output

0.00

3.10

0.00

Off

Overcurrent Protection

CURR:PROT:STAT Activate OCP circuit (by

enabling OCP when the

output is shorted)

CURR:PROT:STAT Clear OCP circuit

OFF

0.00

3.10

Off

OUTP:PROT:CLE

Clear OCP circuit

Off

*Addr will not light if the module is controlled from the keyboard.

28 Turn-On Checkout

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In Case Of Trouble

Mainframe Failure

You can assume there is a problem with the mainframe if there is more than one module in the mainframe and none of the

module fans are on. The trouble also is probably in the mainframe if the module fans are on and the their displays are

enabled (see "Configuration Switch" in "Chapter 2 - Installation") but their VOLTS and AMPS displays do not light. If a

module does not appear to be operating but its VOLTS and AMPS display light, move the module to another address slot.

If the above condition still occurs, then the problem probably is in the module.

Module Line Fuse

If a power module’s fan is on but its front panel does not light, the module line fuse may be blown. Proceed as follows:

1. Remove the power module from the mainframe.

Note

You can remove and insert the power module without turning off the mainframe power provided the

module output is either disabled or is programmed to zero and there is no GPIB bus, trigger bus, or

RI/DFI activity. If you are in doubt, turn off the mainframe power.

2. Check the line fuse (see Figure 2-1). If it is defective, replace it with one of the same type and rating (for the Agilent

part number, see Table 1-3).

Do not use a slow-blow fuse as a replacement.

3. Replace the power module in the mainframe.

Module Output Connector

If the module panel indicates a normal voltage but there is no output at the load, the problem may be in the output

connector. This is even more probable if the connector has relays. The following tests may isolate the problem:

•

If another module is working normally, use its mainframe slot for the suspected module (be careful to guard against

any difference in module output voltage). If there is still no output, the problem is in the module. If the module has an

output in the new slot, the problem is with its original output connector.

To check a suspected connector with a good module, proceed as follows (see DC Module Connectors Installation

Guide for details of the connector and its jumpers):

Disable the power module output (Dis annunciator on).

Remove the output connector from mainframe.

Examine the connector plug for bent pins.

Remove the cover from the output connector.

If there is no relay board, go to step 6. Otherwise, proceed as follows:

Remove the relay board by pulling it straight up.

Examine relay board connector for bent pins.

Examine the connector board to ensure that the required jumpers have been cut to enable relay

operation.

6. Examine the jumpers on the connector board. If any jumpers have been cut, they must be replaced.

Error Messages

A power module may fail either during selftest or while operating (runtime). In either case, the module display may show

an error message indicating the reason for the failure.

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Selftest Error Messages

Table 3-3 lists the displayed selftest error messages. All these errors are hardware failures that require service.

Note

messages.

If you are using the optional Agilent 66001A MPS Keyboard, it will also display selftest error

Table 3-3. Selftest Error Messages

Display

U 1

U 2

U 3

U 4

U 5

U 6

U 7

Failed Test

Internal RAM

External RAM

ROM checksum

(Not used)

12 V supply

5 V supply

Display

U 8

U 9

U 10

U 11

U 12

U 13

Failed Test

Ambient temperature reading

(Not used)

Voltage programming, low range

Current programming, low range

Voltage programming, high range

Current programming, high range

The power module also can detect an EEPROM checksum error. This error is not identified by number, but causes the

following symptoms:

•

The power module starts up with both the VOLTS and AMPS full-scale programming and metering ranges

accepting values up to 1000.

Self-test error code 330 is stored in the SCPI error queue where it can be read by software (see "Chapter 5 -

Error Messages" in the Programming Guide).

•

The software identify query (*IDN?) returns 0A in the model field.

The calibration password is set to 0.

An EEPROM checksum error can occur due to the following operating conditions:

•

Excessive number of write cycles to an EEPROM (see Table 1-2). This condition is not recoverable and

requires service.

Loss of ac input power during a checksum calculation. This condition, which is very unlikely, is recoverable.

You may be able to recover by performing the following steps from the controller or keyboard:

Enable the calibration mode (CAL:STAT ON,0)

Save an operating state to EEPROM. (e.g., *SAV 2)

•

This forces the power module to write to EEPROM and establishes a new checksum.

Runtime Error Messages

Table 3-4 lists the runtime error messages. Runtime errors cease normal power module operation, disable the output, and

display a code on the front panel. The error code is preceeded by "U" and is displayed on both the VOLTS and AMPS

displays. Runtime errors are hardware malfunctions that require service.

Table 3-4. Runtime Error Messages

Display

U 101

Meaning

EEPROM write error

Display

U 102

Meaning

Internal software error

Display

U 103

Meaning

Unexpected interrupt

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Basic Power Module Commands

Introduction

"Chapter 3 - Language Dictionary" of the Programming Guide describes all the power module commands. This chapter

introduces you to the commands that control the following basic functions:

•

output state

•

triggers

the RFI function

the DFI function

protection circuits

fixed-mode output

list-mode output

The power module can be programmed from a controller over the GPIB or from an optional Agilent 66001A MPS

Keyboard plugged into the mainframe. In order to apply the information in this chapter, you must have a working

knowledge of either method. Information concerning programming is presented as follows:

Method of Control

GPIB Controller

Modules

Consult

Programming Guide for Agilent Series 66lxxA MPS Power

MPS Keyboard Appendix B of this guide

GPIB Controller

The power module is programmed by SCPI (Standard Commands for Programmable Instruments) commands sent as strings

within your language statements. "Chapter 2 Introduction to Programming" of the Programming Guide explains how to do

this. The syntax of each command in given in Chapter 3 of that guide.

MPS Keyboard

If you have installed the optional MPS keyboard, you can execute the commands given here. You do not have to

understand the details of SCPI programming, because the keyboard menu allows you to step through all commands. If you

have a keyboard, it is highly recommended that you use it until you are familiar with the general concepts of power module

operation.

Note

The keyboard menu omits optional SCPI headers. That is why some commands displayed on the

keyboard will not look exactly like the syntax given in Chapter 3 of the Programming Guide.

Synopsis Of Commands

The following tables summarize the SCPI commands by function. The short form without optional headers is used in this

chapter. For example, the full command for turning on the output as given in the Programming Guide is OUTPut

[: STATe] ON. Here the optional [STATe] (in brackets) is omitted and only the short form (in capital letters) OUTP ON is

used.

The query form of a command (OUTP?) is omitted unless the command is only of the query form (such as

MEAS:VOLT?).

Basic Power Module Commands 31

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Controlling the Output State

The following commands control the power module output state:

Table 4-1. Power Module Output Commands

Function

Enables the output.

Disables the output.

Command

OUTP ON

OUTP OFF

(If an optional output relay is installed, the command is executed in a sequence that prevents

"hot switching".)

OUTP1,NOR

OUTP 0,NOR

OUTP: REL 1

Enables the output without affecting the output relay.

Disables the output without affecting the output relay.

Closes the (optional) output relay contacts.

OUTP:REL 0

Opens the (optional) output relay contacts.

OUTP:REL:POL NORM

OUTP:REL:POL REV

Makes the (optional) output relay polarity the same as the module output.

Makes the (optional) output relay polarity opposite to the module output. The output is

disabled while the relay polarity is being reversed.)

Controlling Protection Functions

The following commands control the power module protection circuits.

Table 4-2. Power Module Protection Commands

Command

Function

CURR:PROT:STAT ON

Turns on the OCP (overcurrent protection), which disables the output if the output

current exceeds the programmed current.

CURR: PROT: STAT OFF Turns off the current protection.

VOLT:PROT <value>

Programs the OVP (overvoltage protection) level. The protection circuit will trip if the

output voltage exceeds the OVP level.

OUTP:PROT:CLE

Clears any active protection conditions (panel Prot annunciator goes off). Before the

command can comply, you must remove the condition that caused the protection circuit

to trip.

OUTP:PROT:DEL .05

Specifies a delay (in seconds) between the time a protection condition is detected and

the actual activation of the protection circuit. (Does not apply to OVP.)

Controlling Fixed-Mode Output

The following commands control the power module fixed-mode voltage and current output.

Table 4-3. Power Module Fixed-Mode Output Commands

Command

Function

CURR:MODE FIX

Sets the current mode to fixed (as opposed to list). FIX is the factory default power on

state.

CURR <value>

CURR:TRIG <value>

MEAS:CURR?

Programs the immediate output current level (in amperes).

Programs the triggered output current level (in amperes). See "Trigger Commands".

Returns the present value of the output current.

VOLT:MODE FIX

Sets the voltage mode to fixed (as opposed to list). FIX is the factory default power on

state.

VOLT <value>

VOLT: TRIG <value>

MEAS:VOLT?

Programs the immediate output voltage level (in amperes).

Programs the triggered output voltage level (in amperes). See "Trigger Commands".

Returns the present value of the output voltage.

VOLT:SENS?

Returns the position of the output connector sense switch (INT is local; EXT is remote).

32 Basic Power Module Commands

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Controlling List-Mode Output

The following commands control the power module list-mode voltage and current output. Lists require a trigger to begin

execution. For an explanation of lists and triggers, see "Chapter 5 - Synchronizing Power Module Output Changes": in the

Programming Guide.

Table 4-4. Power Module List-Mode Output Commands

Command

Function

CURR:MODE LIST

Sets the current mode to list (as opposed to fixed).

LIST:CURR <value>,<value> Programs the output current values (or points) in the list. When you execute the list,

the output will sequentially step through the list values.

LIST:CURR:POIN?

VOLT:MODE LIST

Returns the number of points programmed in the current list.

Sets the voltage mode to list (as opposed to fixed).

LIST:VOLT <value>,<value>

Programs the output voltage values (or points) in the list. When you execute the list,

the output will sequentially step through the list values.

LIST:VOLT:POIN?

Returns the number of points programmed in the voltage list.

LIST:DWEL <value>,<value> Programs the dwell value, in seconds, for each value in a voltage or current list.

There must be one dwell value for each value in the voltage or current list.

LIST:DWEL:POIN?

LIST: STEP ONCE

Returns the number of points programmed in the dwell list.

Commands the list to execute only one value (point) when a trigger is received. This

specifies a trigger-paced list.

LIST: STEP AUTO

Commands the list to execute all values (points) when a trigger is received. This

specifies a dwell-paced list.

Controlling Triggers

The following commands control the power module trigger subsystem. For a detailed description of this subsystem, see

"Chapter 5 - Synchronizing Power Module Output Changes": in the Programming Guide.

Table 4-5. Power Module Trigger Commands

Command

Function

INIT

Initiates the trigger subsystem to detect one trigger. No triggers will be processed

unless the subsystem is initiated.

INIT:CONT

Keeps the trigger subsystem continuously initiated so it will process each incoming

trigger.

TRIG:SOUR

BUS|EXT|HOLD|LINK| TTLT

TRIG:DEL <value>

Specifies which trigger source is to be accepted by the trigger subsystem (see the

Programming Guide). HOLD prevents response to all triggers.

Programs the delay time (in seconds) between the detection of a trigger and its

execution.

TRIG *TRG

TRIG:LINK <parameter>

Either command sends a trigger signal to the power module over the GPIB bus.

When TRIG:SOUR LINK is programmed, this command specifies the link parameter

for the trigger (see Programming Guide).

OUTP: TILT ON

Enables the power module Trigger Out signal, which is a 20-µs negative-true TTL

pulse available at the mainframe TRIGGER OUT jack. To use this output, you must

program a TTLT trigger source (OUTP:TTLT:SOUR).

Disables the power module Trigger Out signal.

Specifies which trigger source is to be used for the Trigger Out signal. HOLD

prevents a response to any source.

OUTP: TTLT OFF

OUTP:TTLT:SOUR

BUS|EXT|HOLD|LINK

OUTP:TTLT:LINK

When OUTP: SOUR LINK is programmed, this command specifies the link

parameter for the trigger (see Programming Guide).

Basic Power Module Commands 33

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Using the RI/DFI Functions

RI (Remote Inhibit) Input

The signal applied to the mainframe digital connector INH input (see "Chapter 3 Connections" of the mainframe

Installation Guide) is the RI (remote inhibit). The module function switch described in "Chapter 2 - Installation" allows

you to enable or disable the RI input and, when enabled, to specify RI as either latching or nonlatching. If the module

function switch is set to enable RI, then the input signal will disable the power module output. If the function switch is also

set to RI nonlatching, then removing the signal from the INH input restores the power module output. If the function switch

is set to RI latching, an RI status bit is latched and the power module remains disabled after the input signal is removed.

The RI status bit is removed either by reading the Status Questionable Event register (STAT: QUES?) or by clearing it

(*CLS). See the Programming Guide for specifics.

The detected RI bit can be used to generate a DFI signal that appears at the mainframe FLT output. This signal, in turn, can

be wired to the RI inputs of other power modules to also disable their outputs (see the wiring diagram in Chapter 3 of the

mainframe Installation Guide).

DFI (Discrete Fault Indicator) Output

When the DFI function is enabled (OUTP:DFI ON), you can program the Status Subsystem to cause any status condition

(including RI) to generate a DFI output, which appears as a TTL low-true signal at the mainframe digital connector FLT

output. See "Chapter 4 - Status Reporting" in the Programming Guide for details of programming the Status Subsystem.

Table 4-6. DFI Output Commands

Command

OUTP:DFI ON

OUTP:DFI OFF

Function

Enables the DFI function.

Disables the DFI function.

OUTP: DFI: SOUR LINK

OUTP: DFI: LINK <parameter>

Specifies the source for DFI events. The only source is LINK.

Specifies what power module status events are linked to the DFI function. Table 3-1

in the Programming Guide identifies all the DFI link parameters.

Only one parameter may be specified for OUTP: DFI: LINK, such as OUTP: DFI: LINK CC. However, you can specify

entire status groups by specifying a summary bit. For example, OUTP: DFI: LINK QUES specifies the Questionable Status

summary bit, which is the logical OR of OV, OC, OT, RI, and UNR. The default link parameter SUM3 is the logical OR of

the QUES, OPER, and ESB summary bits. This gives DFI access to all three status register groups (see "Chapter 4 - Status

Reporting" in the Programming Guide for more information).

Changing The Power On State

Switch 6 of the module function switches (see "Chapter 2 - Installation") determines the state of the power module when

you turn it on. With the switch in the factory-default position (1), the module turns on in the reset (*RST) state. You will

find the parameters for this state listed under the *RST command in "Chapter 3 - Language Dictionary" of the

Programming Guide. If you store your own parameters in location 0 (*SAV 0), and set the switch to 0, then the module

will assume that state when you turn it on.

Note

The *RST state is a safe turn-on state that should not be replaced without careful consideration.

34 Basic Power Module Commands

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Calibration

Introduction

The power module may be calibrated either over the GPIB from a controller or from an Agilent 66001A Modular Power

System keyboard. Instructions are included for either method. The procedures given here apply to all Series 66l0xA Power

Modules.

Note

The Agilent 66000A mainframe does not require calibration.

Enabling Or Disabling The Calibration Function

There are two ways of controlling access to the calibration function. One is by hardware and the other is with software.

Hardware Control

The CAL positions of the power module function switch (see Table 2-1 in "Chapter 2 Installation") allows hardware control

over the calibration function. The factory-default setting is for normal calibration. Setting the switches to the Inhibit

calibration position prevents any calibration from being performed.

Software Control

The password parameter of the CAL: STAT command allows software control over the calibration function. The standard

factory password is the module model number (for example, 66102 for the Agilent 66102A). By changing the password,

you can either restrict or allow unlimited access to the calibration function (see "Changing the Calibration Password").

Changing The Calibration Password

You can change the password only when the module is in the calibration mode (which requires you to know the present

password). To change the password from 66101 to 81591, send the following commands:

CAL:STAT ON, 66102

CAL:PASS 81591

If you change the password to 0, then all password protection is removed. The Calibration Subsystem then will accept the

CAL: STAT ON command without a password.

Performing a Calibration

Perform the procedures in the order given. The assumed password is 66102; use your actual password in the procedures.

Important

These instructions do not include verification procedures. If you need to perform verification as part of

your calibration procedure, refer to the Series Agilent 66I0xA Service Manual.

Calibration 35

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Equipment Required

The equipment listed in Table A-1, or equivalent, is required for calibration.

Table A-1. Equipment Required for Calibration

Equipment

Voltmeter

Shunt

Characteristics

D-c accuracy 0.005%, 6 digits; resolution 1 µV

Recommended Model

Agilent 3458A

Agilent 66101A,

66102A

Agilent 66103A,

66104A, 66105A,

66106A

Guildline 9230/100

Guildline 9230/15

0.01Ω, 100 A, 100 W, 0.04% @ 100 W, 0.01% @ 1W,

power coeff. 0.0004%/watt in air

0.1 Ω, 15 A, 25 W, 0.04% @ 25 W, 0.01% @ 1W, power

coeff. 0.002%/watt in air

GPIB Controller or

Keyboard

HP Vectra (or IBM compatible) with GPIB Interface or Agilent BASIC series Agilent 66001A

MPS

Calibrating Voltage

Calibration may cause dangerous voltages to be present at the power module output.

The following procedure calibrates the output voltage and the overvoltage protection (OVP). During voltage calibration,

you will enter two readings from the external DVM. You must calibrate the voltage before calibrating the OVP. You do

not have to enter any external readings when calibrating the OVP.

Table A-2. Voltage Calibration Procedure

Keyboard Entry

Controller Entry †

Function

Connect the equipment as shown in Figure A-lA

Output Voltage Calibration

*RST

Reset the power module

(Before proceeding, set the module output, via the keyboard or the GPIB, for 1.0 V at 0.5 A)

OUTP ON

Enable the output

CAL:STAT 1,66102

Using your password, enable the calibration

mode

CAL:VOLT:LEV MIN

Select the lower calibration point

CAL: VOLT: DATA <NRf>

CAL:VOLT:LEV MAX

CAL:VOLT:DATA <NRf>

Enter the digital voltmeter reading

Select the upper calibration point

Enter the digital voltmeter reading

Note: The following step overwrites the existing voltage calibration constants stored in nonvolatile memory.

CAL:SAV Save the new calibration constants

Overvoltage Protection Calibration

If the optional output relay is installed, either disconnect it or set it to the OFF (open) state.

CAL:VOLT:PROT

Perform OVP calibration

Note: It takes a few seconds for the power module to make the measurement. When completed, the new constant is

automatically stored in nonvolatile memory.

† See Figure A-2 for program listing.

‡ Enter the voltage measured by the external digital multimeter.

36 Calibration

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Figure A-1. Calibration Test Setup

Calibrating Current

The following procedure calibrates the output current. During the calibration, you will make two voltage measurements

across the output shunt and enter the computed current.

Table A-3. Current Calibration Procedure

Keyboard Entry

Controller Entry †

Function

OUTP OFF

Connect the equipment as shown in Figure A-lB.

(Before proceeding, set the module output, via the keyboard or the GPIB, for 1.0 V at 0.5 A.)

Disable the output

OUTP ON

Enable the output

CAL:STAT 1,66102

Using your password, enable the calibration

mode

CAL:CURR:LEV MIN

Select the lower calibration point

Wait for the meter reading to stabilize. Then read the meter and enter the calculated current value.‡

CAL: CURR:DATA <NRf>

CAL:CURR:LEV MAX

Enter lower current value

Select the upper calibration point

Wait for the meter reading to stabilize. Then read the meter and enter the calculated current value.‡

CAL: CURR: DATA < NRf>

Enter the upper current value

Note: The following step overwrites the existing current calibration constants stored in nonvolatile memory.

CAL:SAV

Save the new calibration constants

† See Figure A-2 for program listing.

‡ Calculate the current value as follows:

V^R

I =

Calibration 37

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Using The CAL:AUTO Command

Normal calibration procedures also calibrate the readback circuits that respond to the MEAS: CURR? and MEAS: VOLT?

commands. During normal operation, the readback accuracy is affected by temperature changes within the power module.

Use of the CAL:AUTO command reduces the temperature error component of the readback accuracy specification. See

"Chapter 3 - Language Dictionary" of the Programming Guide for information about this command.

Recovering The Factory Calibration Constants

The original factory calibration constants are stored in EPROM and can be recovered. This may prove helpful in situations

where miscalibration is suspected and it is not possible to recalibrate. To restore factory calibration, proceed as follows:

1. Remove the power module from the mainframe and set the calibration switches to the factory position (see Table 2-

1 in "Chapter 2 - Installation").

2. Replace the power module and cycle the power (on and then off).

3. Remove the power module from the mainframe and restore the calibration switches to the normal position.

4. Replace the module in the mainframe.

The module now has its original factory calibration constants. However, password protection has been removed from the

CAL:STAT ON command.

Recovering From A Lost Calibration Password

The standard factory password is the module model number (for example, 66102). If no one has changed the password,

entering the model number will enable the calibration mode (for example, CAL:STAT ON,66102).

If the password is unknown, then the only alternative is to perform the procedure given under "Recovering the Factory

Calibration Constants". This removes the password protection from the CAL: STAT ON command. However, it also

changes the calibration constants to their original factory values.

Calibration Error Messages

If you enter calibration commands from the keyboard, it will display the error messages listed in Table A-4.

Table A-4. Keyboard Calibration Error Messages

CAL ERROR

An entered value is not within acceptable range

Computed calibration constant is out of range

You entered an incorrect password

DOES NOT CAL

PASSWD ERROR

WRONG MODE

The power module is not in CV or CC mode, as required

Agilent Basic Calibration Program

The following program can be run on any controller operating under Agilent BASIC. The assumed slot address is 0 and

calibration password is 66101. If required, change these parameters in the appropriate statements.

38 Calibration

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! VOLTAGE CALIBRATION PROGRAM

! CONNECT INSTRUMENTS AS SHOWN IN FIGURE A-la

DIM Resp$[255],Err_msg$[255]

50 Volt_cal:

Err_found=0

INPUT "CONNECT INSTRUMENTS AS SHOWN IN FIGURE A-la ... Press any key to continue.” ,Resp$

Resp$=""

100

110

ASSIGN @Ps TO 70500

! ASSIGN POWER SUPPLY GPIB ADDRESS

! NOTE: DEFAULT MODULE SLOT IS 0

120 OUTPUT @Ps;"*RST;OUTPUT ON"

130 OUTPUT @Ps;"VOLT MAX"

140 OUTPUT @Ps;"CURR MAX"

150 OUTPUT @Ps;"CAL:STATE ON, 66101"

160

! INITIALIZE POWER SUPPLY

! PASSWORD IS OPTIONAL - ONLY

! REQUIRED IF SET TO NON-ZERO

! NOTE: DEFAULT = MODEL NUMBER

170

180 OUTPUT @Ps;"CAL:VOLTAGE:LEVEL MIN"

190 INPUT "ENTER VOLTAGE MEASUREMENT FROM EXTERNAL VOLTMETER",Volt_read

200 OUTPUT @Ps;"CAL:VOLTAGE ";Volt_read

210 OUTPUT @Ps;"CAL:VOLTAGE:LEVEL MAX"

220 INPUT "ENTER VOLTAGE MEASUREMENT FROM EXTERNAL VOLTMETER",Volt_read

230 OUTPUT @Ps;"CAL:VOLTAGE ";Volt_read

240 OUTPUT @Ps;"CAL:VOLTAGE:PROT"

250

! CALIBRATE OVERVOLTAGE PROTECTION

! CIRCUITRY

260 GOSUB Save_cal

270 IF Err_found THEN

280

290

INPUT "ERRORS have occurred, REPEAT VOLTAGE CALIBRATION (Y OR N)?",Resp$

IF TRIM$(UPC$(Resp$[ l,l ]))="Y" THEN GOTO Volt_cal

300 END IF

310 IF Err_found THEN

320

330

340

350

360

370

380

390

400

410

420

430

440

450

460

470

PRINT "VOLTAGE CALIBRATION NOT SAVED"

ELSE

PRINT "VOLTAGE CALIBRATION COMPLETE”

END

! CURRENT CALIBRATION PROGRAM

! CONNECT INSTRUMENTS AS SHOWN IN FIGURE A-lb

Current_cal:

Err_found=0

INPUT "CONNECT INSTRUMENTS AS SHOWN IN FIGURE A-lb ... Press any key to continue.",Resp$

Resp$=""

OUTPUT @Ps;"CAL:STATE ON, 66101"

! PASSWORD IS OPTIONAL - ONLY

! REQUIRED IF SET TO NON-ZERO

! NOTE: DEFAULT = MODEL NUMBER

480

! REFER TO TABLE A-1 FOR CORRECT SHUNT VALUE FOR MODEL BEING CALIBRATED

490

Figure A-2. Agilent BASIC Calibration Program

Calibration 39

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500

510

520

530

540

550

560

570

580

590

600

610

INPUT "ENTER VALUE OF CURRENT SHUNT BEING USED",Shunt_val

OUTPUT @Ps;"CAL:CURRENT:LEVEL MIN"

INPUT "ENTER VOLTAGE MEASUREMENT FROM EXTERNAL VOLTMETER",Volt_read

Current=Volt_read/Shunt_val

OUTPUT @Ps;"CAL:CURRENT ";Current

OUTPUT @Ps;"CAL:CURRENT:LEVEL MAX"

INPUT "ENTER VOLTAGE MEASUREMENT FROM EXTERNAL VOLTMETER",Volt_read

Current=Volt_read/Shunt_val

OUTPUT @Ps;"CAL:CURRENT ";Current

GOSUB Save_cal

IF Err_found THEN

INPUT "ERRORS have occurred, REPEAT CURRENT

CALIBRATION (Y OR N)?",Resp$

620

IF TRIM$(UPC$(Resp$[ l,l ]))="Y" THEN GOTO

Current_cal

630

640

END IF

IF Err_found THEN

650

660

670

PRINT "CURRENT CALIBRATION NOT SAVED"

PRINT "CURRENT CALIBRATION COMPLETE"

ELSE

680

END IF

690

STOP

700 Save_cal:

710

! SAVE CALIBRATION CONSTANTS

REPEAT

720

730

740

750

OUTPUT @Ps;"SYSTEM:ERROR?"

ENTER @Ps;Err_num,Err_msg$

IF Err_num<>0 THEN

PRINT "ERROR: ";Err_msg$

Err_found=l

760

770

END IF

780

790

UNTIL Err_num=0

IF NOT Err_found THEN

800

810

820

INPUT "SAVE CALIBRATION CONSTANTS (Y OR N)?",Resp$

IF TRIM$(UPC$(Resp$[1,1]))="Y" THEN

OUTPUT @Ps;"CAL:SAVE"

830

END IF

840

END IF

850

860

OUTPUT @Ps;"CAL:STATE 0"

RETURN

870

END

Figure A-2. Agilent BASIC Calibration Program (continued)

40 Calibration

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Using The Agilent 66001A MPS Keyboard

Introduction

This appendix describes the Agilent 66001A Modular Power System (MPS) Keyboard, which is available as an option for

the Agilent 66000A Modular Power System.

The Agilent 66001A MPS Keyboard lets you program the Agilent 66000A Modular Power System without having to

connect it to a computer. With the keyboard, you can:

■

Access any module in the mainframe that the keyboard is plugged into.

Display operating and status information from the selected module.

Control the module from the fields that appear on the display.

Program the module using SCPI commands and queries.

Read error messages.

Connecting The Keyboard

The keyboard plugs into a jack on the front of the mainframe as indicated in the following figure. A keyboard jack is also

available on the rear panel. The keyboard can be plugged in or out while the mainframe is on.

Note

Do not connect more than one keyboard to a mainframe.

Agilent 66001A MPS Keyboard 41

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Keyboard Description

This section briefly explains the various areas on the keyboard as indicated in the following figure:

DISPLAY

Subaddress and

Instrument

The subaddress of the presently selected module appears on the left side of the display. The

instrument field displays an instrument number when the module contains more than one instrument.

Power supply modules do not use this field.

Meter Area

The predominant area of the display presents operating and status information about the selected

module. This is referred to as the meter area of the display. Power supply modules display the

output voltage and current as well as the operating mode in the meter area of the display. Refer to

"Using the Display" for more information.

The meter area is also used to display the SCPI commands when the Command function is active.

Use the meter area to construct the SCPI command and then send the command to the module.

Annunciators

Annunciators on the bottom of the display provide additional information on the operation of the

presently selected module. Active annunciators can indicate:

Shift

The

Lock key has been pressed.

Unr

Dis

The module is unregulated.

The module’s output is disabled.

Prot

Err

Cal

One of the protection features has been activated.

There is an error message in the SCPI error queue.

Calibration mode is enabled.

Rmt

Lsn

Tlk

The module is in remote mode (keyboard disabled).

The module is addressed to listen over the GPIB.

The module is addressed to talk over the GPIB.

The module has generated a service request.

SRQ

42 Agilent 60001A MPS Keyboard

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ô SYSTEM KEYS

This key switches from remote operation (over the GPIB) to local operation using the keyboard.

Press

when the Rmt annunciator is on to enable the keyboard.

This key moves the cursor to the subaddress field so you can select another module. Use the Entry

or Select keys to enter another subaddress.

í FUNCTION KEYS

This function continuously displays operating information about the selected module. The Meter

function is the turn-on default function, and is also in effect whenever the mainframe is in remote

mode.

This function lets you send a SCPI command or query to the selected module. Use the letter keys or

the Select keys to select the SCPI command. Refer to the power module Programming Guide for a

complete description of the SCPI commands. Refer to the end of this appendix for the SCPI

command tree used by the keyboard.

This function displays status information about the following QUEStionable and CONDition status

Programming Guide for a complete description of the QUEStionable and CONDition status

registers.

This function displays the error messages whenever the Err annunciator on the display indicates that

an error has occurred.

This function lets you format the meter area of the display. Power supply modules do not use

additional meter formats.

([Shift] [Meter])

This function lets you send the next command entered from the keypad to all the modules in the

mainframe. The subaddress field on the display indicates "ALL" when this function is active. You

([Shift] [Command])

must press

each time you want to send a command to all modules.

This function clears any latched protection features that have tripped.

([Shift] [Status])

÷ SELECT KEYS

When the Meter function is active, these keys let you move across the display so that you can enter

or change values in the selected fields. When the Command function is active, these keys let you

move across the various levels of the command tree structure. Numeric command parameters

default either to zero or the last programmed value.

When the Meter function is active, these keys let you increment and decrement the numeric values in

the selected field. When the Command function is active, these keys let you scroll up and down

through the choices at each level of the command tree.

This key lets you recall up to five previous commands that were sent. You can edit any recalled

command. Press

to send the command.

This key exits any action and returns the display to the Meter function. If the Command function is

active, the displayed command is not executed (same as

Agilent 66001A MPS Keyboard 43

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û ENTRY KEYS

These keys let you enter numeric values. Values can be entered directly. If the Meter function is

active, the display automatically switches to the Command function with the appropriate command

for programming the metered mode on the display.

This key enters the decimal point.

This key is used to separate multiple command arguments such as those used with a List command.

These keys let you increment and decrement the numeric values in the selected field when the Meter

function is active. Note that numeric values change in larger steps the longer these keys are held

down. When the Command function is active, these keys let you increment and decrement numeric

command parameters.

These keys let you assign a polarity to a value that is entered with the numeric Entry keys. You

must enter the polarity before you enter the number.

This key lets you enter the exponent of a value that is entered with the numeric Entry keys. Enter

the exponent after you enter the number.

This key backspaces over and deletes individual digits in a numeric entry field (same as

This key clears the entire numeric entry field.

This key executes a command.

ø LETTER KEYS

These keys let you select SCPI commands when the Command function is active. Letter keys select

the choices that begin with the letter that is pressed and move across the command tree when

additional selections are available.

ed letters make selections by scrolling through the choices

at the present command level that start with the shifted letter.

Note

Nothing happens if a letter is pressed that has no corresponding SCPI command.

This key is the prompt for the SCPI instrument commands.

This key is the prompt for the GPIB commands (IEEE-488.2).

This key is the prompt for SCPI queries. Append the prompt to the query. The result of the query

appears on the display after it is entered.

This key accesses the shifted key functions. The Shift annunciator on the display indicates that the

key was depressed. The annunciator turns off when the next key is pressed.

This key locks the shift key functions. The Shift annunciator on the display indicates when the shift

functions are locked.

This key backspaces over and deletes individual digits in a numeric entry field (same as

This key executes a command.

44 Agilent 60001A MPS Keyboard

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Using The Display

Changing or Entering Values

The following figure is an example of the keyboard display when a power module is addressed and the Meter function is

active:

The keyboard continuously displays measured voltage and current. The blinking cursor initially highlights the voltage field,

which indicates that the value in that field can be changed using the numeric Entry keys. You can also use the

and

keys to move the cursor across the display to select other fields that you want to change.

Press

repeatedly to increment the voltage value.

You can also use the numeric Entry keys to enter a new value directly into the field. The display will switch to the

Command function when the numericEntry keys are used. Enter the new value next to the SCPI command, and execute the

command with the

key.

Displaying Status

Use the

key to view the present state of the following status bits of the addressed module: CV, CC, OV, OC, OT,

RT, WTG, and DWE. A Status mnemonic appears on the display only if the corresponding bit has been set in the status

registers. In the following example, the display indicates that the module is in constant voltage (CV) mode and is waiting

(WTG) for a trigger input.

The status response remains on the display until you press another key to do something else, or until the module goes into

remote mode. Press

to return to the meter function.

Agilent 66001A MPS Keyboard 45

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Sending SCPI Commands

As described in the power module Programming Guide, SCPI commands are organized into message units. The keyboard

can only send one message unit at a time; you cannot combine message units. Also, optional headers within a command do

not appear on the display. There are two ways to construct message units using the keyboard:

■

locate and append each SCPI header to the message unit with the Select keys, or

directly construct the message using only the first letter of each header with the letter keys.

The figure at the end of this appendix shows the SCPI command tree structure that is used by the keyboard. When the

command function is selected with the

modules.

key, the VOLTage command appears on the display for power supply

The Select keys let you move up and down as well as across the various levels of the command tree. When numeric

parameters are accessed with the Select keys, the value either defaults to zero or the last programmed value.

Letter keys let you directly access headers by typing the first letter of the header. Letter keys select headers by moving

across the levels of the command tree. If more than one header starts with the same letter at a specific level in the command

tree, the first choice in that level is selected. Use the

key to select the command you want to use. You can also

use the ed letters to scroll through the available choices at the present command level that start with the shifted letter.

Command Example

The following examples show you how to use the Select keys or the letter keys to construct and send commands to the

addressed module. In this example, the voltage protection level of a power supply module is being set to 7 volts.

46 Agilent 60001A MPS Keyboard

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Press

to execute the command.

Using the letter keys to directly access and send commands is much faster than using theSelect keys to find and then send

commands. Of course, this method is faster only if you know which commands you are going to program. The following

sequence shows the same example using the letter keys:

Press

to execute the command.

Query Example

Queries return data from the addressed module. Use the Select keys or the letter keys to construct and send queries to the

addressed module in the same way that you send commands. When you enter the query, the display returns a value. In the

following example, the power module is queried as to its actual voltage output:

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The query response remains on the display until you press another key to do something else, or until the module goes into

remote mode. Press or to return to the meter function.

To query the programmed setting of any command parameter, use the cursor control keys to access the parameter field of

the command. The value that appears is the last programmed value. In the following example, the module is queried as to

its voltage protection setting:

You can now change the voltage protection level or press

to return to the meter function.

Note

If a SCPI command has a corresponding query, you can also add the

after the command to turn the

key is ignored.

command into a query. If a command does not have a corresponding query, the

Error Example

If you make an error when you are constructing a command, the display will inform you that an error has occurred when you

enter the command. The following message is an example of an error that has occurred because the data entered for a

parameter was out of the range of the power module.

Either press

to recall and edit the command that caused the error or press

to clear the

message and return to the meter function.

With the keyboard, you can also read back any system error that has occurred when the module is operating in remote mode.

The Err annunciator on the display indicates that there is an error in the SCPI error queue. If the module is in remote mode,

you must first press

to get out of remote mode. The following example shows how to read error messages when the

module is in remote mode:

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If the Err annunciator is still on after the error message is displayed, it means there are additional error messages in the

SCPI error queue. Press

from the error queue.

to display the other messages. Each time you press the

key it removes one error

SCPI Command Tree

The following figure illustrates the SCPI command tree used by the keyboard.

Agilent 66001A MPS Keyboard 49

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50 Agilent 60001A MPS Keyboard

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Index

display panel, 27

address slot, 20

ampere capacity, 21

annunciators, display panel

Addr, 27

downprogramming, 11

EEPROM, 30

error messages, display panel

calibration, 38

runtime, 30

CC, 27

Dis, 27

Prot, 27

selftest, 30

Unr, 27

system, 30

error messages, keyboard, 49

cables

GPIB, 15

factory-default state, 18

fault indicator (see FLT)

fixed-mode operation, 28, 32

FLT input (see DFI)

fuse, line, 15, 18, 29

serial link, 15

calibrating current, 37

calibrating voltage, 36

calibration, 35

constants, 38

equipment for, 36

password, 35, 38

program for, 39

ground, earth, 9, 21

ground, signal, 21

GPIB address

changing, 26

verification of, 35

capacitive loads, 26

CC mode, 11

determining, 26

primary, 26

subaddress, 26, 42

GPIB capabilities, 14

checkout, output, 28

checksum error, 28

commands (see SCPI)

commands, common, 46, 50

commands, subsystem, 46, 50

connector, FLT/INH, 34

connector, output, 21, 22, 25, 29

controller, GPIB, 31

CV mode, 11

hardware, 15

identification, module, 9

impedance, output, 11

indicators, display panel

AMPS, 27

default state (see power-on state)

DFI

description of, 1-2

digital connector pins for (see Chapter 3 in

Installation Guide)

VOLTS indicator, 27

inductive loads, 26

INH (see RI)

examples of use , 34

OUTP:DFI commands for (see Chapter 3 in

Programming Guide)

initiating triggers, 33

isolation, 32

signal electrical characteristics (see Chapter 1 in

Installation Guide)

status parameter links for (see Chapter 3 in

Programming Guide)

keyboard, 41

keyboard annunciators

Cal, 42

SUM3 status bit for (see Chapter 4 in Programming

Guide)

Dis, 42

Err, 42

Index 51

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Index (continued)

Lsn, 42

keyboard select keys, 43, 46

Prot, 42

keyboard system keys, 43

keyword, optional, 31

Rmt, 42

Shift, 42

SRQ, 42

Tlk, 42

language, SCPI (see SCPI)

LCD (see display)

lists, 10, 33

list-mode operation, 33

load, capacitive, 26

load impedance, 11

load,inductive, 26

local sensing, 21

Unr, 42

keyboard cursor, 45

keyboard display, 42, 45

keyboard entry keys, 44, 45

keyboard function keys, 43

keyboard jack, 41

keyboard keys

, 44

manual, change sheet, 17

manuals, instruction, 9, 10

, 44

, 43, 45, 47

, 43, 45

, 43, 46

, 43, 46, 47

nonvolatile memory, 29

OCP, 28, 32

output connector, 15, 29

output curve, 15

output impedance, 11

output noise, 23

output rating, 15, 23

overcurrent protection (see OCP)

overvoltage protection (see OVP)

OVP, and battery charging, 26

OVP, clearing, 32

, 44

, 43, 46, 47

, 43

, 44

, 44, 45, 47, 48

, 43

, 43, 48

, 43, 49

, 43, 48

, 43

OVP, and remote sensing, 26

OVP, and status, 45

parallel operation, 23

password, calibration, 35, 38

power-on state, 28

, 44

, 43

, 43, 48

, 44, 46

, 44

location 0 state, 34

*RST state, 34

primary address (see GPIB address)

programming, from a controller, 31

programming, from a keyboard, 31, 41

programming current, 28, 32

programming protection circuits, 28, 32

programming triggers, 33

programming voltage, 28, 32

pull tab, 20

, 43, 45

, 43

, 44, 45

, 44

keyboard letter keys, 44

keyboard number keys, 44

52 Index

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Index (continued)

OUTP:TTLT:LINK, 33

OUTP:TTLT:SOUR, 33

*TRG, 33

remote inhibit (see RI)

TRIG, 33

description of , 10

digital connector pins for (see Chapter 3 in

Installation Guide)

TRIG: LINK, 33

TRIG: SOUR, 33

VOLT, 32, 46

examples of use , 34

example of wiring (see Chapter 3 in Installation

Guide)

mainframe input signal (see Chapter 5 in

Programming Guide)

RI Questionable Status bit (see Chapters 3 and 4 in

Programming Guide)

VOLT:PROT, 32, 47

VOLT:PROT: CLE, 32

VOLT: TRIG, 32

secondary address (see GPIB subaddress)

selftest, power-on, 28

sense leads, 22

serial cable, 15

signal electrical characteristics (see Chapter 1 in

Installation Guide)

*RST state (see power-on state)

recalling states, 28

serial number, 9

series operation, 24

shunt, calibration, 35

status bits, 34

relay, output, 10, 25, 29

remote sensing, 13, 21, 22, 23

reverse current, 13, 25

CC, 45

CV, 45

DWE, 45

reverse voltage, 25

OC, 34, 45

OT, 34, 45

OV, 34, 45

RI, 34

RT, 45

UNR, 34

WTG, 45

safety class, 9

saving states, 28

SCPI

command headers, 31, 50

command tree, 50

error queue, 50

switch, configuration, 17, 18

calibration, 18, 19

display, 18, 19

power-on state, 18, 19

RI, 18, 19

switch, line voltage, 18

switch, Local/Remote, 19, 25

optional commands, 31, 50

query form, 31, 48

SCPI commands, 10, 28, 32, 33

CURR, 32

CURR: MODE, 32

CURR:PROT:STAT,32

CURR: TRIG, 32

INIT, 33

triggers, 10, 33

INIT:CONT, 33

LIST: CURR, 33

LIST: CURR: POIN, 34

LIST: DWEL, 34

LIST:DWEL:POIN, 34

LIST: STEP, 34

LIST: VOLT, 33

MEAS:CURR?, 32

MEAS: VOLT?, 32, 50

OUTP, 32

trigger commands, 33, 49

triggers, initiating, 33

TRIG IN, 10

turn-on state (see power-on state)

unregulated operation, 10

voltage readback, 22, 32

OUTP: REL, 32

OUTP: DFI, 34

OUTP:DFI: LINK, 34

OUTP: DFI: SOUR, 34

OUTP:TTLT, 33

wire size, 21, 23

Index 53

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Agilent Sales and Support Offices

For more information about Agilent Technologies test and measurement products, applications, services, and

for a current sales office listing, visit our web site: http://www.agilent.com/find/tmdir

You can also contact one of the following centers and ask for a test and measurement sales representative.

United States:

Latin America:

Agilent Technologies

Test and Measurement Call Center

P.O. Box 4026

Englewood, CO 80155-4026

(tel) 1 800 452 4844

Agilent Technologies

Latin American Region Headquarters

5200 Blue Lagoon Drive, Suite #950

Miami, Florida 33126

U.S.A.

(tel) (305) 267 4245

(fax) (305) 267 4286

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Australia/New Zealand:

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Mississauga, Ontario

L4W 5G1

Agilent Technologies Australia Pty Ltd

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Forest Hill, Victoria 3131

(tel) 1-800 629 485 (Australia)

(fax) (61 3) 9272 0749

(tel) 1 877 894 4414

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(fax) (64 4) 802 6881

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Asia Pacific:

Agilent Technologies

Test & Measurement European Marketing Organisation

P.O. Box 999

1180 AZ Amstelveen

The Netherlands

Agilent Technologies

24/F, Cityplaza One, 1111 King’s Road,

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tel: (852)-3197-7777

fax: (852)-2506-9284

(tel) (31 20) 547 9999

Japan:

Agilent Technologies Japan Ltd.

Measurement Assistance Center

9-1, Takakura-Cho, Hachioji-Shi,

Tokyo 192-8510, Japan

(tel) (81) 426 56 7832

(fax) (81) 426 56 7840

Technical data is subject to change.

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Manual Updates

The following updates have been made to this manual since the print revision indicated on the title page.

4/15/00

All references to HP have been changed to Agilent.

All references to HP-IB have been changed to GPIB.

6/21/02

The serial number and option number information in chapter 1 has been updated.

9/21/04

The Declaration of Conformity has been updated.

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