Agilent Technologies 66311D, 66311B, 66309B, 66111A User Manual

USER’S GUIDE

Agilent Model 66111A

Fast Transient DC Source

Agilent Model 66311B/D, 66309B/D

Mobile Communications DC Source

NOTE: Refer to page 23 for a brief description of the model differences.

Agilent Part No. 5964-8125

Microfiche No. 5964-8126

Printed in USA: June 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 Technologies software and firmware products, which are designated by Agilent Technologies 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 Technologies 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 Technologies. Customer shall prepay shipping charges by (and shall pay all duty and taxes) for products returned to Agilent Technologies for warranty service. Except for products returned to Customer from another country, Agilent Technologies shall pay for return of products to Customer.

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

If Agilent Technologies 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 Technologies.

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 TECHNOLOGIES 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 TECHNOLOGIES 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 Technologies’ full line of Support Programs.

2

Safety Summary

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 safety standards of design, manufacture, and intended use of the instrument. Agilent Technologies assumes no liability for 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.

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

WARNING

Caution

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

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 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.

4

Declaration Page

DECLARATION OF CONFORMITY

according to ISO/IEC Guide 22 and EN 45014

Manufacturer’s Name:	Agilent Technologies
Manufacturer’s Address:	140 Green Pond Road
	Rockaway, New Jersey 07866
	U.S.A.
declares that the Product
Product Name:	a) Dynamic Measurement DC Source
	b) System DC Power Supply
	c) Remote Front Panel
Model Number:	a) Agilent 66311A, 66311B, 66312A, 66111A
	b) Agilent 6612B, 6611C, 6612C, 6613C, 6614C
	c) Agilent 14575A
conforms to the following Product Specifications:
Safety:	IEC 1010-1:1990+A1(1992)/EN61010-1:1993
EMC:	CISPR 11:1990 / EN 55011:1991 - Group 1 Class B
	IEC 801-2:1991 / EN 50082-1:1992 - 4 kV CD, 8 kV AD
	IEC 801-3:1984 / EN 50082-1:1992 - 3 V / m

IEC 801-4:1988 / EN 50082-1:1992 - 0.5 kV Signal Lines

1 kV Power Lines

Supplementary Information:

The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC//93/68/EEC and the EMC Directive 89/336/EEC and carries the CE-marking accordingly.

New Jersey	December 1, 1998	______
Location	Date	Bruce Krueger / Quality Manager

European Contact: Your local Agilent Technologies Sales and Service Office or Agilent Technologies GmbH, Department TRE, Herrenberger Strasse 130, D-71034 Boeblingen (FAX:[phone])

5

DECLARATION OF CONFORMITY

according to ISO/IEC Guide 22 and EN 45014

Manufacturer’s Name:	Agilent Technologies
Manufacturer’s Address:	140 Green Pond Road
	Rockaway, New Jersey 07866
	U.S.A.
declares that the Product
Product Name:	a) Mobile Communication DC Source-Dual Output
Model Number:	a) Agilent 66309B, 66309D
conforms to the following Product Specifications:
Safety:	IEC 1010-1:1990+A1(1992)/EN61010-1:1993
EMC:	CISPR 11:1990 / EN 55011:1991 - Group 1 Class B
	IEC 801-2:1991 / EN 50082-1:1992 - 4 kV CD, 8 kV AD

IEC 801-3:1984 / EN 50082-1:1992 - 3 V / m

IEC 801-4:1988 / EN 50082-1:1992 - 0.5 kV Signal Lines 1 kV Power Lines

Supplementary Information:

The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC//93/68/EEC and the EMC Directive 89/336/EEC and carries the CE-marking accordingly.

New Jersey	February, 1999	______
Location	Date	Bruce Krueger / Quality Manager

European Contact: Your local Agilent Technologies Sales and Service Office or Agilent Technologies GmbH, Department TRE, Herrenberger Strasse 130, D-71034 Boeblingen (FAX:[phone])

6

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 1999 Agilent Technologies Inc.	Edition 1 __________February, 1999
	Update 1 __________January, 2000
	Update 2 __________June, 2000

7

Table of Contents

Warranty Information	2
Safety Summary	3
Declaration Page	5
Acoustic Noise Information	7
Printing History	7
Table of Contents	8

1 - QUICK REFERENCE	15
The Front Panel - At a Glance	15
The Rear Panel - At a Glance	16
Instrument Configuration	16
Front Panel Number Entry	17
Front Panel Annunciators	18
Immediate Action Keys	18
Front Panel Menus - At a Glance	19
SCPI Programming Commands - At a Glance	20

2 - GENERAL INFORMATION	21
Document Orientation	21
Safety Considerations	22
Options and Accessories	22
Description and Model Differences	23
Common Capabilities	24
Front Panel Controls	24
Remote Programming	24
Output 1 Characteristic	25
Output 2 Characteristic	26
Option 521 Description (Agilent 66309B/D only)	27

3 - INSTALLATION	29
Installation and Operation Checklist	29
Inspection	30
Damage	30
Packaging Material	30
Items Supplied	30
Cleaning	30
Location	30
Bench Operation	31
Rack Mounting	31
Input Connections	31
Connect the Power Cord	31
Output Connections	32
Output 1	32
Output 2	32
Current Ratings	32
Voltage Drops and Lead Resistance	32
Remote Sense Connections	33
Load Regulation and Voltage Drop in the Remote Sense Leads	35
Maintaining Stability while Remote Sensing	35
Open Sense Lead Protection	36
Local Sensing	37
Output Compensation	38
OVP Considerations	39

8

DVM Connections	39
Measuring Circuits that are Not Powered by the Main Output	40
Measuring Circuits that are Floating with Respect to the Main Output	41
External Protection Connections	42
Digital I/O Connections	43
Computer Connections	43
GPIB Interface	43
RS-232 Interface	44

4 - TURN-ON CHECKOUT	45
Checkout Procedure	45
In Case of Trouble	47
Selftest Error Messages	47
Runtime Error Messages	48
Line Fuse	48

5 - FRONT PANEL OPERATION		49
Introduction		49
Front Panel Description		49
System Keys		51
Function Keys		52
Immediate Action Keys		52
Scrolling Keys		52
Metering Keys		53
Output Control Keys		54
Entry Keys		55
Examples of Front Panel Programming		56
1	- Using the Front Panel Display	56
2	- Setting the Output Voltage, Current, Compensation, and Relay Mode	57
3	- Setting the Output 2 Voltage and Current (Agilent 66309B/D only)	58
4	- Querying and Clearing Output Protection and Errors	59
5	– Making Basic Front Panel Measurements	60
6	– Making Enhanced Front Panel Measurements	61
7	– Making DVM Measurements (Agilent 66311D/66309D only)	62
8	- Programming External Protection and the Digital Port Functions	63
9	- Setting the GPIB Address and Programming Language	63
10 - Storing and Recalling Instrument States		64

6 - INTRODUCTION TO PROGRAMMING	65
External References	65
GPIB References	65
SCPI References	65
VXIplug&play Power Products Instrument Drivers	66
Supported Applications	66
System Requirements	66
Downloading and Installing the Driver	66
Accessing Online Help	67
GPIB Capabilities of the DC Source	67
GPIB Address	67
RS-232 Capabilities of the DC Source	67
RS-232 Data Format	67
RS-232 Flow Control	68
Introduction to SCPI	68
Conventions Used in This Guide	69
Types of SCPI Commands	69
Multiple Commands in a Message	70
Moving Among Subsystems	70

9

Including Common Commands	70
Using Queries	71
Types of SCPI Messages	71
The Message Unit	71
Headers	71
Query Indicator	72
Message Unit Separator	72
Root Specifier	72
Message Terminator	72
SCPI Data Formats	72
Numerical Data Formats	72
Suffixes and Multipliers	73
Response Data Types	73
SCPI Command Completion	73
Using Device Clear	74
SCPI Conformance Information	74
SCPI Conformed Commands	74
Non-SCPI Commands	74

7 - PROGRAMMING THE DC SOURCE	75
Introduction	75
Programming the Output	75
Power-on Initialization	75
Enabling the Output	75
Output Voltage	76
Output Current	76
Triggering Output Changes	77
SCPI Triggering Nomenclature	77
Output Trigger Model	77
Setting the Voltage or Current Transient Levels	77
Enabling the Output Trigger System	78
Selecting the Output Trigger Source	78
Generating Triggers	78
Making Basic Measurements	79
Average Measurements	79
Controlling Measurement Samples	79
Window Functions	80
Measuring Output 2 Voltage and Current (Agilent 66309B/D only)	80
Making Enhanced Measurements	80
Current Ranges and Measurement Detector	81
RMS Measurements	81
Pulse Measurements	82
Returning All Measurement Data From the Data Buffer	83
Making DVM Measurements	83
Average Measurements	83
RMS Measurements	83
Triggered Measurements	84
SCPI Triggering Nomenclature	84
Measurement Trigger Model	84
Enabling the Measurement Trigger System	85
Selecting the Measurement Trigger Source	85
Selecting the Sensing Function	85
Generating Measurement Triggers	86
Pre-trigger and Post-trigger Data Acquisition	88
Programming the Status Registers	88
Power-On Conditions	89
Operation Status Group	90

10

Questionable Status Group	91
Standard Event Status Group	91
Status Byte Register	91
Determining the Cause of a Service Interrupt	92
Servicing Operation Status and Questionable Status Events	92
Monitoring Both Phases of a Status Transition	93
Inhibit/Fault Indicator	93
Remote Inhibit (RI)	93
Discrete Fault Indicator (DFI)	94
Using the Inhibit/Fault Port as a Digital I/O	94

8 - LANGUAGE DICTIONARY	95
Introduction	95
Subsystem Commands	95
Common Commands	99
Programming Parameters	99
Calibration Commands	100
CALibrate:CURRent	100
CALibrate:CURRent2	100
CALibrate:CURRent:MEASure:LOWRange	100
CALibrate:CURRent:MEASure:AC	100
CALibrate:DATA	101
CALibrate:DATE	101
CALibrate:DVM	101
CALibrate:LEVel	101
CALibrate:PASSword	101
CALibrate:SAVE	102
CALibrate:STATe	102
CALibrate:VOLTage	102
CALibrate:VOLTage2	102
CALibrate:VOLTage:PROTection	102
Display Commands	103
DISPlay	103
DISPlay:CHANnel	103
DISPlay:MODE	103
DISPlay:TEXT	103
Measurement Commands	104
FORMat	104
FORMat:BORDer	105
MEASure:ARRay:CURRent? FETCh:ARRay:CURRent?	105
MEASure:ARRay:VOLTage? FETCh:ARRay:VOLTage?	105
MEASure:CURRent? FETCh:CURRent?	106
MEASure:CURRent2?	106
MEASure:CURRent:ACDC? FETCh:CURRent:ACDC?	106
MEASure:CURRent:HIGH? FETCh:CURRent:HIGH?	107
MEASure:CURRent:LOW? FETCh:CURRent:LOW?	107
MEASure:CURRent:MAXimum? FETCh:CURRent: MAXimum?	107
MEASure:CURRent:MINimum? FETCh:CURRent:MINimum?	108
MEASure:DVM? FETCh:DVM?	108
MEASure:DVM:ACDC? FETCh:DVM:ACDC?	108
MEASure:VOLTage? FETCh:VOLTage?	108
MEASure:VOLTage2	109
MEASure:VOLTage:ACDC? FETCh:VOLTage:ACDC?	109
MEASure:VOLTage:HIGH? FETCh:VOLTage:HIGH?	109
MEASure:VOLTage:LOW? FETCh:VOLTage:LOW?	110
MEASure:VOLTage:MAXimum? FETCh:VOLTage:MAXimum?	110
MEASure:VOLTage:MINimum? FETCh:VOLTage:MINimum?	110

11

SENSe:CURRent:DETector	111
SENSe:CURRent:RANGe	111
SENSe:FUNCtion	112
SENSe:PROTection:STATe	112
SENSe:SWEep:OFFSet:POINts	112
SENSe:SWEep:POINts	112
SENSe:SWEep:TINTerval	113
SENSe:WINDow	113
Output Commands	114
INSTrument:COUPle:OUTPut:STATe	114
OUTPut[1 | 2]	114
OUTPut[1 | 2]:RELay:MODE	114
OUTPut:DFI	115
OUTPut:DFI:SOURce	115
OUTPut:PON:STATe	115
OUTPut:PROTection:CLEar	116
OUTPut:PROTection:DELay	116
OUTPut:RI:MODE	116
OUTPut:TYPE	116
[SOURce:]CURRent	117
[SOURce:]CURRent2	117
[SOURce:]CURRent:PROTection:STATe	118
[SOURce:]CURRent:TRIGger	118
[SOURce:]CURRent2:TRIGger	118
[SOURce:]DIGital:DATA	119
[SOURce:]DIGital:FUNCtion	119
[SOURce:]VOLTage	119
[SOURce:]VOLTage2	120
[SOURce:]VOLTage:PROTection	120
[SOURce:]VOLTage:PROTection:STATe	120
[SOURce:]VOLTage:TRIGger	121
[SOURce:]VOLTage2:TRIGger	121
Status Commands	121
STATus:PRESet	121
STATus:OPERation?	122
STATus:OPERation:CONDition?	122
STATus:OPERation:ENABle	122
STATus:OPERation:NTR STATus:OPERation:PTR	123
STATus:QUEStionable?	123
STATus:QUEStionable:CONDition?	124
STATus:QUEStionable:ENABle	124
STATus:QUEStionable:NTR STATus:QUEStionable:PTR	124
System Commands	125
SYSTem:ERRor?	125
SYSTem:LANGuage	125
SYSTem:VERSion?	125
Trigger Commands	126
ABORt	126
INITiate:SEQuence INITiate:NAME	126
INITiate:CONTinuous:SEQuence1 INITiate:CONTinuous:NAME TRANsient	127
TRIGger	127
TRIGger:SOURce	127
TRIGger:SEQuence2 TRIGger:ACQuire	128
TRIGger:SEQuence2:COUNt:CURRent TRIGger:ACQuire:COUNt:CURRent	128
TRIGger:SEQuence2:COUNt:DVM TRIGger:ACQuire:COUNt:DVM	128
TRIGger:SEQuence2:COUNt:VOLTage TRIGger:ACQuire:COUNt:VOLTage	129
TRIGger:SEQuence2:HYSTeresis:CURRent TRIGger:ACQuire:HYSTeresis:CURRent	129

12

TRIGger:SEQuence2:HYSTeresis:DVM TRIGger:ACQuire:HYSTeresis:DVM	130
TRIGger:SEQuence2:HYSTeresis:VOLTage TRIGger:ACQuire:HYSTeresis:VOLTage	130
TRIGger:SEQuence2:LEVel:CURRent TRIGger:ACQuire:LEVel:CURRent	131
TRIGger:SEQuence2:LEVel:DVM TRIGger:ACQuire:LEVel:DVM	131
TRIGger:SEQuence2:LEVel:VOLTage TRIGger:ACQuire:LEVel:VOLTage	132
TRIGger:SEQuence2:SLOPe:CURRent TRIGger:ACQuire:SLOPe:CURRent	132
TRIGger:SEQuence2:SLOPe:DVM TRIGger:ACQuire:SLOPe:DVM	133
TRIGger:SEQuence2:SLOPe:VOLTage TRIGger:ACQuire:SLOPe:VOLTage	133
TRIGger:SEQuence2:SOURce TRIGger:ACQuire:SOURce	134
TRIGger:SEQuence1:DEFine TRIGger:SEQuence2:DEFine	134
Common Commands	135
*CLS	135
*ESE	135
*ESR?	136
*IDN?	136
*OPC	136
*OPT?	137
*PSC	137
*RCL	137
*RST	138
*SAV	138
*SRE	139
*STB?	139
*TRG	140
*TST?	140
*WAI	140
Additional Commands	141
INSTrument:STATe	141
OUTPut:PROTection:TRIPped?	141
CURRent:LIMit:HIGH?	141
CURRent:LIMit:LOW?	141
CURRent:PROTection:TRIPped?	142
VOLTage:LIMit:HIGH?	142
VOLTage:LIMit:LOW?	142
VOLTage:PROTection:TRIPped?	142

A - SPECIFICATIONS	143
Specifications	143
Supplemental Characteristics	144
B - VERIFICATION AND CALIBRATION	147
Introduction	147
Equipment Required	147
Test Setup	147
Performing the Verification Tests	148
Turn-On Checkout	148
Voltage Programming and Measurement Accuracy	149
Current Programming and Measurement Accuracy	149
DVM Measurement Accuracy	151
Performing the Calibration Procedure	154
Front Panel Calibration Menu	154
Front Panel Calibration Procedure	155
Calibration Error Messages	159
Changing the Calibration Password	159
Calibration Over the GPIB	159

13

C - ERROR MESSAGES	161
Error Number List	161
D - EXAMPLE PROGRAMS	165
Introduction	165
Assigning the GPIB Address in Programs	165
National Instruments GPIB Driver	165
BASIC	168
Pulse Measurements	169
DFI Programming Example	173
E - LINE VOLTAGE CONVERSION	175
Open the Unit	175
Configure the Power Transformer	175
Install the Correct Line Fuse	175
Close the Unit	175
F - COMPATIBILITY LANGUAGE	177
Introduction	177
INDEX	183

14

1

Quick Reference

The Front Panel - At a Glance

1 A 14-character display	2 Annunciators indicate
shows output measurements	operating modes and status
and programmed values.	conditions.

3 Rotary control sets voltage, current, and menu parameters.

Use Æ and Ç

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

1

2

3

	66309D		DUAL OUTPUT
	Mobile Communications DC Source
CV	CC	Unr Dis	OCP Prot Cal	Shift Rmt Addr Err	SRQ
	SYSTEM			FUNCTION			ENTRY
Channel		Error	Input	OV		Res	Cir Entry
Local		Address	Meter	Voltage	.	Output	Enter
LINE							Number
1	2	3	4	5		-
		Save	Prot Cir	OCP		Cal
Off		Recall	Protect	Current		Output	Enter
On	6	7	8	9	0	On/Off

Backspace

4

5

6

7

4 Turns the dc

5 System keys:

6 Function keys:

7 Entry keys:

source on and off.

♦

return to Local mode

♦

enable/disable the

♦

enter values

♦

select output channel

output

♦

increment or

♦

set GPIB address

♦

select metering

decrement values

♦

set RS-232 interface

functions

♦

and

É

È

♦

display SCPI error

♦

program voltage and

front

select

panel

codes

current

menu parameters.

♦

save and recall

♦ set and clear protection

♦

Æ

and

Ç

♦

instrument states

♦

functions

select

a digit in

display firmware

and

the numeric entry

ó

€

revision and serial

field.

scroll

through the front

number.

panel menu commands.

15

1 - Quick Reference

The Rear Panel - At a Glance

1 DVM inputs.	2 GPIB (IEEE-488)	3 Remote front panel	4 INH/FLT (remote
Connector plug is	interface connector.	display connector.	INHibit / internal FauLT)
removable.		RS-232 interface for	connector. Connector plug
		Agilent 66111A,	is removable.
		66311B/D only.
1	2	3	4

WARNING:

NO OPERATOR SERVICEABLE PARTS

REFER SERVICING TO SERVICE TRAINED

INH FLT

+ - +

	-	+
	!
	DVM
	OUTPUT 2	OUTPUT 1
	0 - 12V / 0 - 1.5A	0 - 15V / 0 - 3A
	-S - + +S	-S - + +S
WARNING:	FOR CONTINUED FIRE PROTECTION, USE SPECIFIED LINE

5	6	7
5 Output 2 connector	6 Output 1 connector.	7 Power cord
(Agilent 66309B/D only).	Connector plug is removable.	connector (IEC 320)
Connector plug is removable.	IMPORTANT: Install this connector with
	its supplied sense jumpers before applying
	power to the unit.

Instrument Configuration

Use the front panel Address key to configure the interface

Refer to “Front Panel Menus - At a Glance”

♦Select either the GPIB or RS-232 interface.

♦Enter the GPIB bus address.

♦Configure the RS-232 baud rate, parity, and flow control.

♦Select either the SCPI or COMPatibility programming language.

♦Enable the optional Agilent 14575A remote front panel.

16

Quick Reference - 1

Front Panel Number Entry

Enter numbers from the front panel using one 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. With the output enabled, this method changes the output voltage or current immediately.

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.

17

1 - Quick Reference

Front Panel Annunciators

CV		Output 1 or output 2 is operating in constant voltage mode.
CC		Output 1 or output 2 is operating in constant current mode.
Unr		Output 1 or output 2 is unregulated.
Dis		The output is OFF. Press the Output On/Off key to turn the output on.
OCP		The over-current protection state is ON. Press the OCP key to turn over-current
		protection off.
Prot		Indicates that the output has been disabled by one of the protection features.
		Press the Prot Clear key to clear the protection condition.
Cal		Calibration mode is ON. Scroll to the Cal Off command and press the Enter key
		to exit the calibration mode.
Shift		The Shift key has been pressed.
Rmt		The remote programming interface (GPIB or RS-232) is active. Press the Local
		key to return the unit to front panel control.
Addr		The interface is addressed to talk or listen.
Err		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
	Shift		Prot Clr
	Shift		OCP

Toggles the output of the selected output between the ON and OFF states. When coupled, turns both output channels 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.

18

Quick Reference - 1

Front Panel Menus - At a Glance

Address

				ó
				ó
				ó
				ó
				ó
				ó
				ó
				ó
	Recall
	Shift			Save
	Shift			Error
	Shift			Channel
	Meter
				ó
				ó
				ó
				ó
				ó
				ó
				ó
				ó
				ó
				ó
				ó
				ó
	Voltage
	Current
	Shift			Res
	Protect
	Output
				ó
				ó
				ó
				ó
				ó
				ó
				ó
				ó
				ó
				ó
				ó
	Shift			OV
				ó
	Shift			Input
				ó
				ó
				ó
	Shift			Cal

ADDRESS 7

INTF GPIB BAUDRATE 300 PARITY NONE FLOW NONE LANG SCPI REMOTE FP OFF ROM: A.00.00 SN: US12345678

*RCL 0

*SAV 0

ERROR 0

2 5.000V 0.104A

1	12.000V	1 0.204A
1	12.500V	MAX
1	1.000V	MIN
1	12.330V	HIGH
1	0.080V	LOW
1	12.000V	RMS
1	0.350A	MAX
1	0.050A	MIN
1	0.400A	HIGH
1	0.012A	LOW
1	0.210A	RMS
1	12.000V DC:DVM

112.000V RMS:DVM

1VOLT 12.000

2VOLT 2.000

1CURR 2.000

2CURR 1.000

OVERCURRENT

*RST COUPLING ALL TYPE:CAP LOW PON:STATE RST PROT:DLY 0.08 RI LATCHING DFI OFF DFI:SOUR OFF PORT RIDFI DIGIO 7

SENSE:PROT OFF 1 REL:MODE DD

VOLT:PROT 22 PROT:STAT ON

CURR:RANG HIGH CURR:DET ACDC TINT 46.8

POINT 2048

CAL ON

Sets the GPIB Address

Selects an interface (GPIB | RS232) 1

Selects baud rate (300 | 600 | 1200 | 2400 | 4800 | 9600) 1 Selects message parity (NONE | EVEN | ODD | MARK | SPACE) 1 Selects flow control (XON-XOFF | RTS-CTS | DTR-DSR | NONE) 1 Selects language (SCPI | COMP) 1

Enables or disables Agilent 14575A remote front panel (ON | OFF) Displays the firmware revision of the instrument

Displays the serial number of the instrument

Recalls the instrument state

Saves the present instrument state

Displays the number of errors in the SCPI error queue

Toggles the display between output 1 and output 2 (output 2 shown)

Measures the output voltage and current (output 1 shown)

Measures the peak output voltage 2

Measures the minimum output voltage 2

Measures the high level of a voltage pulse waveform 2

Measures the low level of a voltage pulse waveform 2

Measures the rms voltage 2

Measures the peak output current 2

Measures the minimum output current 2

Measures the high level of a current pulse waveform 2

Measures the low level of a current pulse waveform 2

Measures the rms current 2

Measures the dc voltage on the DVM input 3

Measures the rms voltage on the DVM input 3

Sets the voltage of output 1 on all models

Sets the voltage of output 2 4

Sets the current limit of output 1 on all models

Sets the current limit of output 2 4

Not available

Protection status (example shows overcurrent tripped)

Places the dc source in the factory-default state

Couples or decouples output 1 and output 2 (NONE or ALL) 3 Sets the output capacitance compensation (HIGH, H2, or LOW) Select the power-on state command (RST or RCL0)

Sets the output protection delay in seconds

Sets the remote inhibit mode (LATCHING, LIVE, or OFF) Sets the discrete fault indicator state (ON or OFF)

Selects the DFI source (QUES, OPER, ESB, RQS, or OFF) Sets the output port functions (RIDFI or DIGIO)

Sets and reads the I/O port value (0 through 7)

Enables or disables the open sense lead detect circuit (ON or OFF)

Sets the relay mode for Option 521 units (DD, HD, DH, or HH) (output 1 shown)

Sets the overvoltage protection level

Enables or disables overvoltage protection (ON or OFF)

Sets the current range (HIGH, LOW, or AUTO) 2

Sets the current measurement detector (ACDC or DC) 2

Sets the time interval for a front panel measurement in seconds Sets the buffer size for a front panel measurement

Accesses calibration menu (See Appendix B).

Use	É	and	È		to select parameters (table shows factory defaults).				Use	Meter	to exit any menu.
1Not	valid for Agilent Model 66309B					2Not valid for Agilent Model 66111A
3Only valid for Agilent Model 66309B/D						4Only valid for Agilent Model 66311D/66309D

19

1 - Quick Reference

SCPI Programming Commands - At a Glance

NOTE: Some [optional] commands have been included for clarity. Refer to chapter 8 for a complete description of all programming commands.

ABORt CALibrate

:CURRent [:POSitive] :NEGative

:MEASure :LOWRange 1 :AC 1

:CURRent2 2 :DATA <n> :DATE <date> :DVM 3 :LEVel P1 | P2

:PASSword <n> :SAVE

:STATe <bool> [, <n>] :VOLTage [:DC]

:PROTection :VOLTage2 2

DISPlay

<bool>

:CHANnel <channel> 2 :MODE NORMal | TEXT :TEXT <display_string>

FORMat

[:DATA] ASCII | REAL [,length] :BORDer NORM | SWAP

INITiate

:SEQuence[1|2]

:NAME TRANsient | ACQuire :CONTinuous :SEQuence[1], <bool>

:NAME TRANsient, <bool>

INSTrument

:COUPling:OUTPut:STATe NONE | ALL 2

MEASure

:CURRent2 [:DC]? 2 :VOLTage2 [:DC]? 2

MEASure | FETCh

:ARRay :CURRent? :VOLTage?

[:CURRent] [:DC]? :ACDC? 1 :HIGH? 1 :LOW? 1 :MAX? 1 :MIN? 1

:DVM [:DC]? 3 :ACDC? 3

:VOLTage [:DC]? :ACDC? 1 :HIGH? 1 :LOW? 1 :MAX? 1 :MIN? 1

OUTPut [1|2]

<bool> :DFI <bool>

:SOURce QUES | OPER | ESB | RQS | OFF :PON :STATe RST | RCL0

:PROTection :CLEar :DELay <n>

:RELay :MODE DD | HD | DH | HH 2

:RI :MODE LATCHing | LIVE | OFF :TYPE [:CAPacitance] HIGH | H2 | LOW

SENSe

:CURRent :RANGe <n>1 :DETector ACDC | DC1

:FUNCtion “VOLT” | “CURR” | "DVM" :PROTection :STATe <bool> :SWEep :OFFSet :POINts <n>

:POINts <n> :TINTerval <n>

:WINDow :TYPE “HANN” | “RECT”

[SOURce:]

CURRent <n> :TRIGgered <n>

:PROTection :STATe <bool> CURRent2 <n> 2

:TRIGgered <n> 2 DIGital :DATA <n>

:FUNCtion RIDF | DIG VOLTage <n>

:TRIGgered <n> :PROTection <n>

:STATe <bool>

VOLTage2 <n> 2 :TRIGgered <n> 2

STATus

:PRESet

:OPERation [:EVENt]? :CONDition? :ENABle <n> :NTRansition <n> :PTRansition <n>

:QUEStionable [:EVENt]? :CONDition? :ENABle <n> :NTRansition <n> :PTRansition <n>

SYSTem

:ERRor?

:LANGuage SCPI | COMPatibility :VERSion?

TRIGger

:SEQuence2| :ACQuire [:IMMediate] :COUNt :CURRent <n>

:DVM <n> 3 :VOLTage <n>

:HYSTeresis:CURRent <n> :DVM <n> 3 :VOLTage <n>

:LEVel :CURRent <n> :DVM <n> 3 :VOLTage <n>

:SLOPe :CURRent POS | NEG | EITH :DVM POS | NEG | EITH 3 :VOLTage POS | NEG | EITH

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

:SOURce BUS :SEQuence1 :DEFine TRANsient :SEQuence2 :DEFine ACQuire

1Not valid for Agilent 66111A

2Only valid for Agilent 66309B/D

3Only valid for Agilent 66311D/66309D

20

2

General Information

Document Orientation

This manual describes the operation of the Agilent Model 66111A Fast Transient, the Agilent Model 66311B/D Mobile Communications, and the Agilent Model 66309B/D Dual Output DC Source. Agilent Models 66311D and 66309D have an additional DVM measurement input on the rear panel. Unless otherwise noted, these models will be referred to by the description "dc source" throughout this manual.

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

Quick Reference Section

General information

Model differences Capabilities and characteristics

Where to find information

Chapter 1

Chapter 2

Installing the unit	Chapter 3
Line connections
Computer connections
Load connections
Checking out the unit	Chapter 4
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

SCPI language dictionary

Installing the VXIplug&play instrument driver

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.

Chapter 5

Chapter 6

Chapters 7 and 8 for SCPI commands. Appendix D for SCPI examples Appendix F for COMPatibility commands

Chapter 6

21

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	87−106 Vac, 47−63 Hz
220	191−233 Vac, 47−63 Hz
230	207−253 Vac, 47−63 Hz
8ZJ	Delete instrument feet option

004Output compensation is factory set to High mode for best transient response. (Refer to chapter 3, under "Output Compensation" for more information)

AXS1	Rack mount kit for two side-by-side units of equal depth. Consists of:
	Lock-link kit (p/n 5061-9694) and Flange kit (p/n 5062-3974)
1CM1	Rack mount kit for one unit (p/n 5062-3972)
521	Solid state relays to connect and disconnect the output (Models 66309B/D only)
052	Device characterization software for current measurements and display
	(available for Agilent Model 66311B only)

1Support rails are required when rack mounting units. Use E3663A support rails for Agilent rack cabinets. If you are using non-Agilent rack cabinets, contact the rack manufacturer to obtain support rails for your cabinet.

Table 2-2. Accessories

Item

GPIB cables 1.0 meter (3.3 ft)

2.0 meters (6.6 ft)

4.0 meters (13.2 ft)

0.5 meters (1.6 ft)

Rack mount with slide - for two side-by-side units of different depths

Rack mount - for two side by side units of different depths

Rack mount with slide - for one unit

Remote Front Panel - for viewing up to six units that are installed in a remote location where the front panels is not visible. Includes an ac/dc adapter for powering up to 3 remote panels

Part Number

Agilent 10833A

Agilent 10833B

Agilent 10833C

Agilent 10833D

5062-3996; 1494-0015

5062-3996

5062-3996; 1494-0015;

5062-4022

Agilent 14575A

22

General Information - 2

Description and Model Differences

The Agilent 66111A Fast Transient DC Source is a high performance dc power source that provides peak current sourcing and rapid, basic measurements in a compact, half-rack box. It is designed to simplify the testing of digital wireless communications products. Excellent voltage transient response characteristics prevent test interruptions due to triggering of low voltage phone shutdown. The 15 volt source and 5A peak current capability provides compatibility with a number of communications standards, including: GSM, CDMA, TDMA, PCS, DECT, TERA, PHS, NADC, PHS, and others. Figure 2-1 describes the output characteristic of the dc source.

The Agilent 66311B Mobile Communications DC Source is a high performance dc power source that provides all of the capabilities of the Agilent 66111A plus fast dynamic measurement and analysis of voltage and current waveforms. Dynamic measurement and analysis of current waveforms combined with precision current measurement let you characterize cellular phone current requirements under all operating conditions.

The Agilent 66309B Mobile Communications DC Source includes all of the capabilities of the Agilent 66311B with the addition of a second, electrically-isolated output. Figure 2-2 describes output characteristic of this second output, which is primarily used to provide voltage or current for a charger input on the device under test. The second output has all of the basic programmable features as the main output, with the exception of the waveform measurement capability, the open sense lead detect capability, overvoltage protection, and low current range.

The Agilent 66311D and 66309D Mobile Communications DC Sources also contain an auxiliary DVM, with input terminals located on the rear panel. This provides limited, low voltage dc and ac measurement capability, which can be used to monitor test point voltages on the unit under test as well as on the test fixture. The common mode voltage range is from −4.5 Vdc to +25 Vdc relative to the minus terminal of output 1. The DVM is programmable from the front panel of the instrument as well as remotely using SCPI programming commands.

	Table 2-3. Model Differences
Item	Agilent	Agilent	Agilent	Agilent	Agilent
	66111A	66311B	66311D	66309B	66309D
Waveform measurements	NO	YES	YES	YES1	YES1
Low range current	NO	YES	YES	YES1	YES1
measurements
ACDC measurement	NO	YES	YES	YES1	YES1
detector
Output compensation	YES	YES	YES	YES1	YES1
Open sense lead protection	YES	YES	YES	YES1	YES1
Auxiliary output (output	NO	NO	NO	YES	YES
2)
External DVM input	NO	NO	YES	NO	YES
Adjustable measurement	YES	YES	YES	YES	YES
buffer
Compatibility commands	YES	YES	YES	NO	NO
RS-232 interface	YES	YES	YES	NO	NO

1Applies to the main output (output 1) only.

23

2 - General Information

Common Capabilities

♦Voltage and current control with 12-bit programming resolution on output 1.

ê3 ampere current source capability (up to 5 amperes for 7 milliseconds)

♦Extensive measurement capability on output 1

êdc voltage and current.

êrms and peak voltage and current.

êCurrent measurement capability up to approximately 7.0 amperes

ê16-bit measurement resolution.

êTriggered acquisition of digitized current and voltage waveforms (all models except Agilent 66111A)

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

♦Built-in GPIB interface programming with SCPI command language.

♦Non-volatile state storage and recall with SCPI command language.

♦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 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, all dc sources are set to the SCPI programming language.

On Agilent 66111A and Agilent 66311B/D units you can change the programming language from SCPI to COMPatibility language. Press the front panel Address key, use ⌠to scroll to the LANG command, press É to select COMP, then press Enter. The language setting is saved in non-volatile memory.

The dc source may be remotely programmed via the GPIB bus, and on Agilent 66111A and 66311B/D units, from an RS-232 serial port. GPIB programming is with SCPI commands (Standard Commands for Programmable Instruments), which make dc source programs compatible with those of other GPIB instruments. Dc source status registers allow remote monitoring of a wide variety of dc source operating conditions. A Compatibility language mode is also included on Agilent 66311A and 66311B/D units to make the dc source compatible with the Agilent 6632A, 6633A, and 6634A Series dc power supplies (refer to appendix E). Note that the compatibility features of this unit are limited to the features that were originally available on Agilent 6632A, 6633A, and 6634A units.

24

General Information - 2

Output 1 Characteristic

The dc source’s main output (output 1) characteristic is shown in the following figure. The main output of the dc source may be adjusted to any value within the boundaries shown.

Output

Voltage

							ISET
	15V
	-1.2A
	VSET				1
				ne
			i
		load	l
		e
		v					2
		i
		t
		s
	i						line	Peak Current
	es
	r						d
	V						a	capability for up
							lo
	C					v
					i		e	to 7 ms shown
				s
				i	t
			s					by dotted lines
		e
		r
		C
-	C								+
										Output
-2.8A	0						3A	5A		Current

Figure 2-1. Dc Source Output 1 Characteristic

The dc source is capable of providing a constant dc output of 15 volts with up to 3 amperes of current. It is capable of sourcing peak currents of up to 5 amperes -- provided the peak current pulse does not exceed 7 milliseconds, and the average current requirement does not exceed 3 amperes. If the unit attempts to draw current for longer than seven milliseconds, the current limit amplifier will limit the current to a maximum of 3.0712 amps. The peak current capability is illustrated by the dotted line in Figure 2-1.

NOTE: To source up to 5 amperes of current for up to 7 milliseconds, the current limit must be programmed for greater than 3 amperes (up to a maximum of 3.0712 A).

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 inital turn-on, the operating mode of the unit will be determined by the voltage setting, 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.

25

2 - General Information

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 voltage. This negative current sinking capability provides fast downprogramming of the output of the dc source. It can also be used to sink current from a battery charger, thus providing battery charger test capability. The negative current is not programmable, and varies linearly from approximately 1.2 amperes at the full rated voltage, to approximately 2.8 amperes at zero output voltage.

NOTE: If you attempt to operate the dc source beyond its output ratings, the output of the unit may become unregulated. This is indicated by the UNR annunciator on the front panel. The output may also become unregulated if the ac line voltage drops below the minimum rating specified in Appendix A.

Output 2 Characteristic

As shown in the following figure, Agilent 66309B/D units have a second output rated at 12 V and 1.5A. The second output has all of the primary programmable features as the main output, with the exception of the waveform measurement capability, the open sense lead detect capability, overvoltage protection, and low current range.

Output

Voltage

+12V

-

0

Peak Current capability for up to 1 ms shown by dotted lines

	+ Output
1.5A	3.0A	Current

Figure 2-2. Output 2 Characteristic

Tables A-1 through A-3 document the specifications and supplemental characteristics of the Agilent dc sources documented in this manual.

26

General Information - 2

Option 521 Description (Agilent 66309B/D only)

Option 521 consists of the following enhancements to the output capabilities of Agilent models 66309B/66309D:

♦Solid-state relays to connect and disconnect the output of the dc source.

The relays are available on the output and sense terminals of outputs 1 and 2. When the solid state relays are open, the output impedance is effectively raised to about 500k ohms for output 1, and about 200k ohms for output 2. Note that the relays open only in response to an Output OFF command.

♦The ability to either Hot switch or Dry switch the solid state relays.

With Hot switching, the relays control the on/off characteristics of the voltage at the output terminals. With Dry switching, the power mesh controls the on/off characteristics of the voltage at the output terminals. In general, Hot switching activates the relays when current is flowing through them. Dry switching activates the relays when no current is flowing through them. You can specify different relay options for the Output ON and Output OFF commands. The following table describes the actions that occur based on the relay mode selection in response to the ON or OFF commands.

		Table 2-5. Option 521 Relay Modes
Relay Mode		Output ON		Output OFF
Dry (D)	1. Closes the output relay		1.	Downprograms the output
	2.	Closes the sense relay	2.	Opens the sense relay
	3.	Programs the output	3.	Opens the output relay
Hot (H)	1. Programs the power mesh		1.	Opens the sense relay
	2.	Closes the output relay	2.	Opens the output relay
	3.	Closes the sense relay	3.	Downprograms the power mesh

The relay modes are stored in non-volatile memory. The last selected mode will be restored when the unit is turned on. When shipped from the factory, the relay mode for both output 1 and output 2 is set to Output ON Hot, Output OFF Hot (HH). The *RST command has no effect on the relay mode.

NOTES: Even with open sense lead detection enabled, the dc source does not check for open sense leads when output 1 is enabled if the Output ON relay mode is set to Hot.

On output 1 and output 2, with the Output OFF relay mode set to Hot, any external output capacitors will not be downprogrammed or discharged. This is because the output relay opens prior to the downprogramming of the power mesh.

With either output 1 or output 2 disabled, the output voltage readback will not be correct. This is because the sense relay is open, effectively breaking the readback path. The voltage readback will be a small negative number.

Table 2-6. Option 521 Factory Settings

Output Coupling	None
	(outputs not coupled)
Output Sense Protection	Off
Output Compensation	High
Output 1 Relay Mode	HH
Output 2 Relay Mode	HH

27

3

Installation

Installation and Operation Checklist

Check the Output Compensation

Check that the output compensation of the dc source is appropriate for your application. Refer to “Output Compensation” in this chapter.

High mode provides the best transient response and can be used with phones having input capacitances from 5 to 12000μF. Note that if the last two digits on the front panel display are fluctuating when the phone is in standby, you may want to set the output compensation to Low mode.

Low mode is used when testing phones having input capacitances from 0 to 12000μF. Standard dc sources are factory-set to Low mode.

Check the Phone Connections

If you ARE remote sensing, are the + and − sense leads connected ONLY at the test fixture and within 20 inches of the phone contacts? For best performance, the distance from sense lead termination to the phone contacts should be as short as possible. Refer to “Lead Resistance” in this chapter. If your unit has a remote sense switch on the back, make sure it is set to the Remote position (out).

If you are NOT remote sensing, are the sense jumpers installed in the output connector? Ensure that the output connector plug is installed in the unit with its supplied sense jumpers in place. Without sense jumpers, the unit goes into a protect state with the output disabled. If your unit has a remote sense switch on the back, you don't need sense jumpers. Make sure the switch is set to the Local position (in).

Check the Operating Settings and Conditions

Are you able to communicate remotely with the dc source? If not, check that the address is set correctly. Refer to “GPIB Address” in the User’s Guide. If your unit has both SCPI and COMP language settings, check that the programming language is set correctly. Refer to “Language setting” in chapter 5.

Is the Prot or Err annunciator on the front panel on? If yes, clear the fault condition before continuing. Refer to “Clearing Protection” in chapter 5.

Is the Overvoltage circuit shutting the unit down? If yes, you can disable the overvoltage circuit. Refer to “Clearing Protection” in chapter 5.

Are the front panel readings unstable? If yes, check that the front panel sampling rate is correct. Also check the setting of the output compensation. Refer to “Front Panel Measurements” in chapter 5 and “Output Compensation” in this chapter.

Additional Agilent 66311/66309 Operating Settings Checks

Are you measuring dynamic output currents? If yes, check that the current detector is set to ACDC. Refer to “Front Panel Measurements” in chapter 5.

Are you measuring output currents under 20 mA? If yes, check that the current range is set to LOW. Refer to “Front Panel Measurements” in chapter 5.

29

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

Power Cord

Part Number

contact the nearest Agilent Sales and Support Office

Description

A power cord appropriate for your location.

Digital I/O	1252-1488	4-terminal digital plug for connecting digital I/O
connector		leads. The connector installs in the back of the unit.
Output connector	0360-2604	5-terminal output plug for connecting load and sense
		leads. This connector installs in the back of the unit.
DVM connector	1252-8670	3-terminal plug for DVM connections (66309B/D)
Sense jumpers	8120-8821	Jumpers that insert into output connector for local
		sensing. Connect +s to +, and −s to −.
Line Fuse	2110-0638	3.15 AT (time delay) for 100/120 Vac operation
	2110-0773	1.6 AT (time delay) for 220/230 Vac operation
Feet	5041-8801	feet for bench mounting
User’s Guide	5964-8125	This manual. Contains installation, checkout, front
		panel, and programming information.

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.

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 of the unit for adequate air circulation (see Bench Operation).

30