Agilent 6634B Operations Guide

USER’S GUIDE

Dynamic Measurement DC Source

Agilent Model 66332A

System DC Power Supply

Agilent Model 6631B, 6632B, 6633B, 6634B

Agilent Part No. 5962-8196

Microfiche Part No. 5962-8197

Printed in USA: August 2000

Warranty Information

CERTIFICATION

Agilent Technologies certifies that this product met its published specifications at time of shipment from the factory.
Agilent Technologies further certifies that its calibration measurements are traceable to the United States National
Bureau of Standards, to the extent allowed by the Bureau’s calibration facility, and to the calibration facilities of other
International Standards Organization members.

WARRANTY

This Agilent Technologies hardware product is warranted against defects in material and workmanship for a period
of three years from date of delivery. Agilent software and firmware products, which are designated by Agilent for use
with a hardware product and when properly installed on that hardware product, are warranted not to fail to execute
their programming instructions due to defects in material and workmanship for a period of 90 days from date of
delivery. During the warranty period Agilent Technologies will, at its option, either repair or replace products which
prove to be defective. Agilent does not warrant that the operation for the software firmware, or hardware shall be
uninterrupted or error free.

For warranty service, with the exception of warranty options, this product must be returned to a service facility
designated by Agilent. Customer shall prepay shipping charges by (and shall pay all duty and taxes) for products
returned to Agilent for warranty service. Except for products returned to Customer from another country, Agilent shall
pay for return of products to Customer.

Warranty services outside the country of initial purchase are included in Agilent’s product price, only if Customer
pays Agilent international prices (defined as destination local currency price, or U.S. or Geneva Export price).

If Agilent is unable, within a reasonable time to repair or replace any product to condition as warranted, the
Customer shall be entitled to a refund of the purchase price upon return of the product to Agilent.

LIMITATION OF WARRANTY

The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by the
Customer, Customer-supplied software or interfacing, unauthorized modification or misuse, operation outside of the
environmental specifications for the product, or improper site preparation and maintenance. NO OTHER
WARRANTY IS EXPRESSED OR IMPLIED. AGILENT SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

EXCLUSIVE REMEDIES

THE REMEDIES PROVIDED HEREIN ARE THE CUSTOMER’S SOLE AND EXCLUSIVE REMEDIES. AGILENT
SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.

ASSISTANCE

The above statements apply only to the standard product warranty. Warranty options, extended support contacts,
product maintenance agreements and customer assistance agreements are also available. Contact your nearest
Agilent Technologies Sales and Service office for further information on Agilent’s full line of Support Programs.

2

Safety Summary

y

y

f

The following general safety precautions must be observed during all phases of operation of this instrument.
Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safet
standards of design, manufacture, and intended use of the instrument. Agilent Technologies assumes no liabilit

or the customer’s failure to comply with these requirements.

GENERAL

This product is a Safety Class 1 instrument (provided with a protective earth terminal). The protective features of
this product may be impaired if it is used in a manner not specified in the operation instructions.
Any LEDs used in this product are Class 1 LEDs as per IEC 825-1.

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

ENVIRONMENTAL CONDITIONS

This instrument is intended for indoor use in an installation category II, pollution degree 2 environment. It is
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 product is set to match the available line voltage, the correct fuse is installed, and all safety
precautions are taken. Note the instrument’s external markings described under "Safety Symbols".

GROUND THE INSTRUMENT

To minimize shock hazard, the instrument chassis and cover must be connected to an electrical ground. The
instrument must be connected to the ac power mains through a grounded power cable, with the ground 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.

ATTENTION: Un circuit de terre continu est essentiel en vue du fonctionnement sécuritaire de l’appareil.

Ne jamais mettre l'appareil en marche lorsque le conducteur de mise … la terre est d‚branch‚.

FUSES

Only fuses with the required rated current, voltage, and specified type (normal blow, time delay, etc.) should be
used. Do not use repaired fuses or short-circuited fuseholders. To do so could cause a shock or fire hazard.

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE

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

DO NOT REMOVE THE INSTRUMENT COVER

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

Instruments that appear damaged or defective should be made inoperative and secured against unintended
operation until they can be repaired by qualified service personnel.

3

SAFETY SYMBOLS

g

g

Direct current

Alternating current

Both direct and alternating current

Three-phase alternating current

Earth (ground) terminal

Protective earth (ground) terminal

Frame or chassis terminal

Terminal is at earth potential. Used for measurement and control circuits designed to be operated
with one terminal at earth potential.

Terminal for Neutral conductor on permanently installed equipment

WARNING

Caution

Terminal for Line conductor on permanently installed equipment

On (supply)

Off (supply)

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.

In position of a bi-stable push control

Out position of a bi-stable push control

Caution, risk of electric shock

Caution, hot surface

Caution (refer to accompanying documents)

The WARNING si
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 si
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.

n denotes a hazard. It calls attention to a procedure, practice, or the like,

n denotes a hazard. It calls attention to an operating procedure, or the like,

4

DECLARATION OF CONFORMITY

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

Manufacturer’s Name and Address

Responsible Party Alternate Manufacturing Site
Agilent Technologies, Inc. Agilent Technologies (Malaysia) Sdn. Bhd
550 Clark Drive, Suite 101
Budd Lake, New Jersey 07828
USA

Declares under sole responsibility that the product as originally delivered

Product Names a) Mobile Communications DC Source

b) System DC Power Supply

Model Numbers a) 66332A, 66312A, 66311B, 66311D

66309B, 66309D, 66319B, 66319D, 66321B, 66321D
b) 6631B, 6632B, 6633B, 6634B 6611C
6612C, 6613C, 6614C

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

Malaysia Manufacturing
Bayan Lepas Free Industrial Zone, PH III
11900 Penang,
Malaysia

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

CC/TCF/00/030 based on Technical Construction File (TCF) HPNJ8, dated
Apr. 25, 2000

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.

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

IEC 61010-1:2001 / EN 61010-1:2001
Canada: CSA C22.2 No. 1010.1:1992
UL 61010B-1: 2003

5

Acoustic Noise Information

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 (Typprüfung).

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 edition and current revision of this manual are indicated below. Reprints of this manual containing
minor corrections and updates may have the same printing date. Revised editions are identified by a new
printing date. A revised edition incorporates all new or corrected material since the previous printing
date.

Changes to the manual occurring between revisions are covered by change sheets shipped with the
manual. In some cases, the manual change applies only to specific instruments. Instructions provided on
the change sheet will indicate if a particular change applies only to certain instruments.

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.

 Copyright 1997 Agilent Technologies Edition 1 __________November, 1997

Update 1 __________July, 1999
Update 2 __________January, 2000
Update 3 __________August, 2000

6

Table of Contents

Warranty Information 2
Safety Summary 3
Acoustic Noise Information 6
Printing History 6
Table of Contents 7

QUICK REFERENCE 9

Agilent 66332A Dynamic Measurement DC Source and
Agilent 6611C-6614C System DC Power Supply 9
The Front Panel - At a Glance 10
Front Panel Number Entry 11
Front Panel Annunciators 12
Immediate Action Keys 12
Front Panel Menus - At a Glance 13
SCPI Programming Commands - At a Glance 14
The Rear Panel - At a Glance 15

GENERAL INFORMATION 17

Document Orientation 17
Safety Considerations 18
Options and Accessories 18
Description 19

Capabilities 19
Front Panel Controls 19
Remote Programming 19
Output Characteristic 20

INSTALLATION 21

Inspection 21

Damage 21
Packaging Material 21
Items Supplied 21
Cleaning 21

Location 22

Bench Operatio n 22
Rack Mounting 22

Input Connections 23

Connect the Power Cord 23

Output Connections 23

Wire Considerations 23
Current Ratings 23
Voltage Drops 24
Multiple Load Connections 24

Remote Sense Connections 25

Sense Leads 25
Stability 26

OVP Considerations 26
Fast/Normal Operation 27

Inductive Loading 27
Capacitive Loading 27

INH/FLT Connections 28
Controller Connections 30

GPIB Interface 30
RS-232 Interface 30

7

TURN-ON CHECKOUT 31

Introduction 31
Using the Keypad 31
Checkout Procedure 31
In Case of Trouble 34

Error Messages 34
Line Fuse 34

FRONT PANEL OPERATION 35

Introduction 35
Front Panel Description 35
System Keys 37
Function Keys 38

Immediate Action Keys 38
Scrolling Keys 38
Metering Keys 39
Output Control Keys 40

Entry Keys 41
Examples of Front Panel Programming 42

1 - Setting the Output Voltage and Current 42
2 - Querying and Clearing Output Protection 43
3 - Making Front Panel Measurements 43
4 - Programming the Digital Output Port 45
5 - Programming the Output Relay (option 760 only) 46
6 - Setting the GPIB Address and RS-232 Parameters 46
7 - Saving and Recalling Operating States 47

SPECIFICATIONS 49

Specifications 49
Supplemental Characteristics 49

VERIFICATION AND CALIBRATION 53

Introduction 53

Equipment Required 53
Test Setup 53

Performing the Verification Tests 54

Turn-On Checkout 54
Voltage Programming and Measurement Accuracy 55
Current Programming and Measurement Accuracy 55

Performing the Calibration Procedure 59

Front Panel Calibration Menu 59
Front Panel Calibration 59

Calibration Error Messages 62
Changing the Calibration Password 62
Calibration Over the GPIB 63

ERROR MESSAGES 65
LINE VOLTAGE CONVERSION 69

Open the Unit 69
Configure the Power Transformer 69
Install the Correct Line Fuse 69
Close the Unit 70

INDEX 71

8

1

Quick Reference

Agilent 66332A Dynamic Measurement DC Source and
Agilent 6631B/6632B/6633B/6634B System DC Power
Supplies

The Agilent 66332A is a 100 Watt, high performance dc power supply that provides dynamic
measurement and analysis of voltage and current waveforms. It is designed to simplify the testing of
digital cellular and mobile phones. For example, data acquired using its dynamic measurement capability
can be used in determining the battery operating time of digital wireless communications products.

The Agilent 6631B/6632B/6633B/6634B are 100 Watt, high performance dc power supplies with output
current measurement capability in the microampere range. They are well suited for testing portable
battery-powered products.

Additionally, the combination of bench-top and system features in these dc sources provide versatile
solutions for your design and test requirements.

Convenient bench-top features

♦ Up to 100 Watts output power
♦ Easy to use knob for voltage and current settings
♦ Highly visible vacuum-fluorescent front panel display
♦ Excellent load and line regulation; low ripple and noise
♦ Measurement capability down to microampere levels
♦ Current sinking up to the maximum rated output current
♦ Instrument state storage
♦ Portable case

Flexible system features

♦ GPIB (IEEE-488) and RS-232 interfaces are standard
♦ SCPI (Standard Commands for Programmable Instruments) compatibility
♦ Triggered acquisition of digitized output current and voltage waveforms (Agilent 66332A only)
♦ I/O setup easily done from the front panel

9

1 – Quick Reference

The Front Panel - At a Glance

j14-character display

shows output
measurements and
programmed values.

1 2 3

Dynamic Measurement DC Source

Unr Dis OCP

CV CC

0-20V / 02A

Prot

Cal Shift Rmt Addr Err SRQ

66XXA

LINE

On

Off

kAnnunciators

indicate operating
modes and status
conditions.

lRotary control

sets voltage, current,
and menu parameters.

Use and
to set the resolution;
then adjust the value
with the knob.

SYSTEM

FUNCTION

Input

Local

Meter

Error

OV

Voltage

Address

Save

OCP
Current

Recall

Cal
Output

Shift

7

4

Prot Clear

Protect

1

Output

0

on/off

mOptional front

panel output
connectors.

ÊÉ

4

ENTRY

8

9

5

6

Clear

2

3

.

-

Enter

Entry

Back
space

OUTPUT

+

-

+_

240 VDC
Max

5

nTurns the dc source

on and off.

o System keys:

♦ return to Local

mode

♦ set the GPIB

address

♦ set the RS-232

interface

♦ display SCPI

error codes

♦ save and recall

instrument states.

6 7 8

p Function keys:

♦ enable/disable

output

♦ select metering

functions

♦ program voltage

and current

♦ set and clear

protection
functions

♦ and

scroll through the
front panel menu
commands.

ô

qEntry keys:

♦ enter values
♦ increment or

decrement values

♦ and

select front panel
menu parameters.

É

♦ and

select a digit in
the numeric entry
field.

ËÌ

Ê

10

Quick Reference – 1

Front Panel Number Entry

Enter numbers from the front panel using one of the following methods:

Use the arrow keys and knob to change voltage or current settings

NOTE The output must be ON to see the displayed values change in Meter mode.

Use the Function keys and knob to change the displayed settings

Use the Arrow keys to edit individual digits in the displayed setting

Increments the flashing digit

Decrements the flashing digit

Moves the flashing digit to the right

Moves the flashing digit to the left

Enters the value when editing is complete

Use the Function keys and Entry keys to enter a new value

NOTE If you make a mistake, use the Backspace key to delete the number, or press the Meter

key to return to meter mode.

11

1 – Quick Reference

Front Panel Annunciators

CV
CC
Unr
Dis

OCP

Prot

Cal

Shift
Rmt

Addr
Err

The output is operating in constant voltage mode.
The output is operating in constant current mode.
The output is unregulated.
The output is OFF. Press the Output On/Off key to turn the

output on.
The over-current protection state is ON. Press the OCP key to

turn over-current protection off.
Indicates that the output has been disabled by one of the

protection features. Press the Prot Clear key to clear the
protection condition.

Calibration mode is ON. Scroll to the Cal Off command and
press the Enter key to exit the calibration mode.

The Shift key has been pressed.
The selected Remote programming interface (either GPIB or

RS-232) is active. Press the Local key to return the unit to
front panel control.

The interface is addressed to talk or listen.
There is an error in the SCPI error queue. Press the Error key

to view the error code.

SRQ

The interface is requesting service.

Immediate Action Keys

Output
On/Off

Local

Prot ClrShift

OCPShift

12

A toggle switch that turns the output of the dc source on
or off.

Activates front panel control when the unit is in remote
mode (unless a Lockout command is in effect).

Resets the protection circuit and allows the unit to
return to its last programmed state.

A toggle switch that enables or disables overcurrent
protection.

Front Panel Menus - At a Glance

Quick Reference – 1

Address

Recall

Meter

ADDRESS 7 Sets the GPIB Address

ô
ô
ô
ô
ô

INTF GPIB Selects an interface (GPIB or RS232)
BAUDRATE 300 Selects baud rate (300, 600, 1200, 2400, 4800, 9600)
PARITY NONE Selects message parity (NONE, EVEN, ODD, MARK, SPACE)
FLOW NONE Selects flow control (XON-XOFF, RTS-CTS, DTR-DSR, NONE)
LANG SCPI Selects language (SCPI or COMP)

*RCL 0 Recalls instrument state

SaveShift
ErrorShift

*SAV 0 Saves present instrument state
ERROR 0 Displays errors in SCPI error queue

12.000V 0.204A Measures output voltage and current

ô
ô
ô
ô
ô
ô
ô
ô
ô
ô

12.500V MAX Measures peak output voltage

1.000V MIN Measures minimum output voltage

12.330V HIGH Measures the high level of a voltage pulse waveform

0.080V LOW Measures the low level of a voltage pulse waveform

12.000V RMS Measures rms voltage

0.350A MAX Measures peak output current

0.050A MIN Measures minimum output current

0.400A HIGH Measures the high level of a current pulse waveform

0.012A LOW Measures the low level of a current pulse waveform

0.210A RMS Measures rms current

1

1

1

1

1

1

1

1

1

1

Voltage
Current
Protect
Output

ô
ô
ô
ô
ô
ô
ô
ô
ô

Shift
Shift Input

Shift

Use and to select menu parameters. Use to exit any menu and return to metering mode.

1

Not available on Agilent 6631B - 6634B or in Compatibility mode. 2Not available on Agilent 6631B.

OV

ô

Cal

VOLT 20.000 Sets the output voltage
CURR 2.000 Sets the output current
OC -- -- -- -- Protection status (example shows overcurrent tripped)
*RST Places the dc source in the factory-default state

PON:STATE RST Select the power-on state command (RST or RCL0)
PROT:DLY 0.08 Sets the output protection delay in seconds
RI LATCHING Sets the remote inhibit mode (LATCHING, LIVE, or OFF)
DFI OFF Sets the discrete fault indicator state (ON or OFF)
DFI:SOUR OFF Selects the DFI source (QUES, OPER, ESB, RQS, or OFF)
PORT RIDFI Sets the output port functions (RIDFI or DIGIO)
DIGIO 7 Sets and reads the I/O port value (0 through 7)
RELAY ON Sets the output relay state (ON or OFF)

2

RELAY NORM Sets the output relay polarity (NORM or REV)
VOLT:PROT 22 Sets overvoltage protection level

CURR:RANG HIGH Sets current range (HIGH, LOW, or AUTO)
CURR:DET ACDC Sets current measurement detector (ACDC or DC)

CAL ON Accesses calibration menu (See User’s Guide).

ËÌ

Meter

2

1

13

1 – Quick Reference

SCPI Programming Commands - At a Glance

NOTE Some [optional] commands have been omitted for clarity. Refer to the Programming

Guide for a complete description of all programming commands.

ABORt SENSe
CALibrate :CURRent :RANGe <n>

:CURRent [:SOURce] [:POSitive] :DETector ACDC | DC
:NEGative :FUNCtion “VOLT” | “CURR”
:MEASure :LOWRange :SWEep :OFFSet :POINts <n>
:AC

1

:POINts <n>
:DATA <n> :TINTerval <n>
:LEVel P1 | P2 | P3 | P4 :WINDow HANN | RECT
:PASSword <n> [SOURce:]
:SAVE CURRent [:LEVel] [:IMMediate] <n>
:STATe <bool> [, <n>] :TRIGgered <n>
:VOLTage [:DC] :PROTection :STATe <bool>
:PROTection DIGital :DATA <n>
DISPlay :FUNCtion RIDF | DIG
[:STATe] <bool> VOLTage [:LEVel] [:IMMediate] <n>
:MODE NORMal | TEXT :TRIGgered <n>
:TEXT <display_string> :ALC :BANDwidth? | :BWIDth?
INITiate :PROTection <n>
[:IMMediate] :SEQuence[1|2
:NAME TRANsient | ACQuire

1

] STATus

1

:PRESet
:CONTinuous :SEQuence[1], <bool> :OPERation [:EVENt]?
:NAME TRANsient, <bool> :CONDition?

MEASure | FETCh

:ARRay :CURRent?
:VOLTage?

2

:ENABle <n>

1

:NTRansition <n>

1

:PTRansition <n>
[:SCALar]:CURRent[:DC]? :QUEStionable [:EVENt]?
:ACDC?
:HIGH?
:LOW?
:MAX?
:MIN?

1

:CONDition?

1

:ENABle <n>

1

:NTRansition <n>

1

:PTRansition <n>

1

SYSTem
:VOLTage [:DC]? :ERRor?
:ACDC?
:HIGH?
:LOW?
:MAX?
:MIN?

1

:LANGuage SCPI | COMPatibility

1

:VERSion?

1

:LOCal

1

:REMote

1

:RWLock

OUTPut TRIGger

[:STATe] <bool> [,NORelay] :SEQuence2 | :ACQuire [:IMMediate]
:DFI [:STATe] <bool> :COUN t :CURRent <n>
:SOURce QUES | OPER | ESB | RQS | OFF :VOLTage <n>
:PON :STATe RST | RCL0 :HYSTeresis:CURRent <n>
:PROTection :CLEar :VOLTage <n>
:DELay <n> :LEVel :CURRent <n>
:RELay [:STATe] <bool>
:POLarity NORM | REV
:RI :MODE LATCHing | LIVE | OFF

3

:VOLTage <n>1

3

:SLOPe :CURRent POS | NEG | EITH1
:VOLTage POS | NEG | EITH1

:SOURce BUS | INTernal1
[:SEQuence1 | :TRANsient] [:IMMediate]

1

Not available on Agilent 6631B - 6634B :SOURce BUS

2

Fetch commands not available on Agilent 6631B – 6634B :SEQuence1 :DEFine TRANsient

3

Not available on Agilent 6631B

:SEQuence2 :DEFine ACQuire1

1

1

1

1

1

1

1

1

1

14

The Rear Panel - At a Glance

Quick Reference – 1

jGPIB (IEEE-488)

interface connector

kRS-232 interface

connector

4

5

lINH/FLT (remote

INHibit / internal
FauLT) connector.
Connector plug is
removable.

3

2

mOutput and

Remote sense
terminal block.

1

6

7

nFast/Normal switch oFuse holder pPower cord

connector (IEC 320)

Use the front panel Address menu to

♦ Select the GPIB or RS-232 interface (see chapter 4 in User’s Guide)
♦ Select the GPIB bus address (see chapter 4 in User’s Guide)
♦ Configure the RS-232 interface (see chapter 4 in User’s Guide)

15

2

General Information

Document Orientation

This manual describes the operation of the Agilent Model 66332A Dynamic Measurement DC Source
and the Agilent Model 6631B/6632B/6633B/6634B System DC Power Supply. Unless otherwise noted,
both units will be referred to by the description "dc source" throughout this manual. The following
documents are shipped with your dc source:

♦ a User’s Guide (this document), contains installation, checkout, and front panel information
♦ a Programming Guide, contains detailed GPIB programming information
♦ an Agilent VXIplug&play instrument driver, for Windows 95 and Windows NT 4.0

The following Getting Started Map will help you find the information you need to complete the specific
task that you want to accomplish. Refer to the table of contents or index of each guide for a complete list
of the information contained within.

Getting Started Map

Task Where to find information

Installing the unit

Line voltage connections
Computer connections
Load connections

Checking out the unit

Verifying proper operation
Using the front panel
Calibrating the unit

Using the front panel

Front panel keys
Front panel examples

Using the programming interface

GPIB interface
RS-232 interface

Programming the unit using SCPI (and Compatibility)
commands

SCPI commands
SCPI programming examples
Compatibility language

Installing the VXIplug&play instrument driver

User’s Guide

User’s Guide

User’s Guide

User’s Guide
Programming Guide

Programming Guide

Programming Guide

NOTE: The driver must be installed on your pc to access
the on-line information. Drivers are available on the web at
www.agilent.com/find/drivers.

17

2 – General Information

Safety Considerations

This dc source is a Safety Class 1 instrument, which means it has a protective earth terminal. That
terminal must be connected to earth ground through a power source equipped with a ground receptacle.
Refer to the Safety Summary page at the beginning of this guide for general safety information. Before
installation or operation, check the dc source and review this guide for safety warnings and instructions.
Safety warnings for specific procedures are located at appropriate places in the guide.

Options and Accessories

Table 2-1. Options

Option Description

100

120

220

230

020 Front panel output binding posts

760 Isolation and polarity reversal relays (not available on Agilent 6631B)

1CM Rack mount kit (p/n 5062-3974)

1CP Rack mount kit with handles (p/n 5062-3975)

1

Support rails are required when rack mounting units. Use E3663A support rails for Agilent rack cabinets, and

E3664A for non-Agilent rack cabinets.

0BN Service manual with extra operating manuals

100 Vac nominal, 50/60 Hz

120 Vac nominal, 50/60 Hz

220 Vac nominal, 50/60 Hz

230 Vac nominal, 50/60 Hz

Accessory Rack slide kit (p/n 1494-0060)

Table 2-2. Accessories

Item Part Number

GPIB cables

1.0 meter (3.3 ft) 10833A

2.0 meters (6.6 ft) 10833B

4.0 meters (13.2 ft) 10833C

0.5 meters (1.6 ft) 10833D

RS-232 cable 34398A

(9-pin F to 9-pin F, 2.5 meter, null modem/printer cable with
one 9-pin M to 25-pin F adapter

RS-232 adapter kit (contains 4 adapters) 34399A

9-pin M to 25-pin M for pc or printer

9-pin M to 25-pin M for pc or printer

9-pin M to 25-pin M for modem

9-pin M to 9-pin M for modem

18

General Information – 2

Description

Both the Agilent 66332A Dynamic Measurement DC Source and the Agilent
6631B/6632B/6633B/6634B System DC Power Supply combine two instruments in one unit. It includes
a dc source, which produces dc output with programmable voltage and current amplitude, and a highly
accurate voltage and current meter, with the capability to measure very low-level currents. Additionally,
the Agilent 66332A Dynamic Measurement DC Source has the ability to measure and characterize output
voltage and current of pulse or ac waveforms.

Capabilities

♦ Output Voltage and Current control with 12-bit programming resolution
♦ Extensive measurement capability:

dc voltage and current.
rms and peak voltage and current (Agilent 66332A only).
16-bit measurement resolution (low range accurate down to 2 microamperes).
Triggered acquisition of digitized current and voltage waveforms (Agilent 66332A only).

♦ Front panel control with 14-character vacuum fluorescent display, keypad, and rotary control for

voltage and current settings.

♦ Built-in GPIB and RS-232 interface programming with SCPI command language.
♦ Non-volatile state storage and recall.
♦ Over-voltage, over-current, over-temperature, and RI/DFI protection features.
♦ Extensive selftest, status reporting, and software calibration.

Front Panel Controls

The front panel has both rotary (RPG) and keypad controls for setting the output voltage and current. The
panel display provides digital readouts of a number of output measurements. Annunciators display the
operating status of the dc source. System keys let you perform system functions such as setting the GPIB
address and recalling operating states. Front panel Function keys access the dc source function menus.
Front panel Entry keys let you select and enter parameter values. Refer to chapter 5 for a complete
description of the front panel controls.

Remote Programming

NOTE: When shipped, Agilent 6631B/6632B/6633B/6634B units are set to the Compatibility

programming language; Agilent 66332A units are set to the SCPI programming
language.
To change the programming language from Compatibility to SCPI, press the front panel

Address key, use ô to scroll to the LANG command, press

press

Enter. Refer to the Programming Guide supplied with your dc source for further

information about remote programming.

The dc source may be remotely programmed via the GPIB bus and/or from an RS-232 serial port. GPIB
programming is with SCPI commands (Standard Commands for Programmable Instruments), which make
the dc source programs compatible with those of other GPIB instruments. Compatibility commands are
also included to make the dc source compatible with the Agilent 6632A, 6633A, and 6634A Series dc

Ì

to select SCPI, then

19

2 – General Information

power supplies (refer to appendix D in the the Programming Guide). Dc source status registers allow
remote monitoring of a wide variety of dc source operating conditions.

Output Characteristic

The dc source’s output characteristic is shown in the following figure. The output of the dc source may be
adjusted to any value within the boundaries shown.

Output

Voltage

Vmax

VSET

1

-

-Imax

0

CV operating line

2

Imax

ISET-ISET

CC operating line

+

Output

Current

Figure 2-1. Dc Source Output Characteristic

The dc source can operate in either constant voltage (CV) or constant current (CC) over the rated output
voltage and current. Although the dc source can operate in either mode, it is designed as a constant
voltage source. This means that the unit turns on in constant voltage mode with the output voltage rising
to its Vset value. There is no command for constant current operation. The only way to turn the unit on in
constant current mode is by placing a short across the output and then enabling or turning the output on.

Note that the dc source cannot be programmed to operate in a specific mode. After initial turn-on, the
operating mode of the unit will be determined by the voltage setting, the current setting, and the load
resistance. In figure 2-1, operating point 1 is defined by the load line traversing the positive operating
quadrant in the constant voltage region. Operating point 2 is defined by the load line traversing the
positive operating quadrant in the constant current region.

Figure 2-1 also shows a single range − two quadrant capability. This means that the dc source is capable
of sourcing as well as sinking current over the output voltage range from zero volts to the rated
maximum. The negative quadrant is identical to the positive quadrant. However, the negative current
cannot be set independently; it tracks the value programmed for the positive current. Thus, if the positive
current is set to 1 A, the negative current is also set to 1 A.

NOTE: If you attempt to operate the dc source beyond its output ratings, the output of the unit

will become unregulated. This is indicated by the UNR annunciator on the front panel.
The output may also become unregulated if the ac input voltage drops below the
minimum rating specified in Appendix A.

Appendix A documents the dc source’s specifications and supplemental characteristics.

20

3

Installation

Inspection

Damage

When you receive your dc source, 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. The list of Agilent Sales and Support Offices is at the back of this guide. Warranty
information is printed in the front of this guide.

Packaging Material

Until you have checked out the dc source, save the shipping carton and packing materials in case the unit
has to be returned. If you return the dc source for service, attach a tag identifying the model number and
the owner. Also include a brief description of the problem.

Items Supplied

The following user-replaceable items are included with your dc source. Some of these items are installed
in the unit.

Table 3-1. Items Supplied

Item Part Number Description

Power Cord contact nearest Agilent

Sales and Support Office

Digital connector 1252-1488A 4-terminal digital plug that connects to the back of the unit.

Output cover 06624-20007 Safety cover that installs over the output screw terminals.

Terminal block screws N/A 6-32 X 3/8 inch screws.

Line Fuse 2110-0055

2110-0002

Feet 5041-8801 feet for bench mounting

User's Guide 5962-8196 Contains installation, checkout, and front panel information.

Programming Guide 5962-8198 Contains detailed GPIB programming information.

A power cord appropriate for your location.

F4A for 100/120 Vac operation
F2A for 220/230 Vac operation

Cleaning

Use a dry cloth or one slightly dampened with water to clean the external case parts. Do not attempt to
clean internally.

WARNING: To prevent electric shock, unplug the unit before cleaning.

21

3 - Installation

Location

Figure 3-1 gives the dimensions of your dc source. The dc source must be installed in a location that
allows sufficient space at the sides and back for adequate air circulation (see Bench Operation).

NOTE: This dc source generates magnetic fields that may affect the operation of other

instruments. If your instrument is susceptible to operating magnetic fields, do not locate
it in the immediate vicinity of the dc source. Typically, at three inches from the dc

source, the electromagnetic field is less than 5 gauss. Many CRT’s, such as those used in
computer displays, are susceptible to magnetic fields much lower than 5 gauss. Check
susceptibility before mounting any display near the dc source.

Bench Operation

A fan cools the dc source by drawing air in through the sides and exhausting it out the back. Minimum
clearances for bench operation are 1 inch (25 mm) along the sides. Do not block the fan exhaust at the

rear of the unit.

Rack Mounting

The dc source can be mounted in a standard 19-inch rack panel or cabinet. Table 2-1 documents the
Agilent part numbers for the various rack mounting options that are available for the dc source.
Installation instructions are included with each rack mount option.

NOTE: Support rails or an instrument shelf is required when rack mounting units.

22

Figure 3-1. Outline Diagram

Installation - 3

Input Connections

Connect the Power Cord

1. Unscrew the line fuse cap from the rear panel and verify that the fuse rating matches what is

specified on the FUSES label on the rear panel. Reinstall the fuse. (See table 3-1 for part numbers.)

2. Connect the power cord to the IEC 320 connector on the rear of the unit. If the wrong power cord

was shipped with your unit, contact your nearest Agilent Sales and Support Office (refer to the list at
the back of this guide) to obtain the correct cord.

NOTE: The detachable power cord may be used as an emergency disconnecting device. Removing

the power cord from the ac input connector will disconnect ac input power to the unit.

Output Connections

The output terminal block has connections for the + and − output, the + and − sense inputs, and an earth
ground terminal. The terminal block screws are 6-32 X 3/8 inch. Remove the safety cover by inserting a
flat bladed screwdriver in the opening on the left side of the cover and pushing the locking tab to the left.
This will release the cover.

Optional front panel binding posts are available to connect load wires for bench operation. The front
panel binding posts are paralleled with the rear panel + and − connections. Before using the front panel
binding posts, make sure that the output terminals are jumpered for local sensing.

NOTE: Front panel binding posts are provided for convenience. Only the rear panel terminals are

optimized for noise, regulation, and transient response as documented in Appendix A.

Wire Considerations

To minimize the possibility of instability on the output,

♦ keep load leads as short as possible
♦ bundle or twist the leads tightly together to minimize inductance

Current Ratings

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

carrying the maximum short-circuit current of the dc source. If there is more than one
load, then any pair of load wires must be capable of safely carrying the full-rated current
of the dc source.

The following table lists the characteristics of AWG (American Wire Gage) copper wire.

Table 3-2. Ampacity and Resistance of Stranded Copper Conductors

AWG No. Ampacity (in free air) Resistance (at 20 deg. C)

Ω

ΩΩΩΩ/m

20 8.33 0.0345 0.01054
18 15.4 0.0217 0.00663
16 19.4 0.0137 0.00417
14 31.2 0.0086 0.00262
12 40 0.0054 0.00165

Ω/ft

ΩΩ

23