Agilent Technologies 6843A User Manual

User’s Guide

AC Power Solutions

Agilent Models 6814B, 6834B, and 6843A

For instruments with Serial Numbers:

Agilent 6814B: 3601A-00101 through 00270

US36010101-up

Agilent 6834B: 3601A-00101 through 00140

US36010101-up

Agilent 6843A: 3540A-00101 through 00140

US35400101-up

Agilent Part No. 5962-0887

Microfiche No 5962-0888

Printed in U.S.A.

December, 1998

Update April 2000

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.

WARNING: LETHAL VOLTAGES

Ac sources can supply 425 V peak at their output. DEATH on contact may result if the output terminals or circuits

connected to the output are touched when power is applied.

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 CONDITONS

This instrument is intended for indoor use in an installation category III, 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.

DO NOT EXCEED INPUT RATINGS

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.

Instruments that appear damaged or defective should be made inoperative and secured against unintended

operation until they can be repaired by qualified service personnel.

SAFETY SYMBOLS

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.

WARNING

Caution

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.

Declaration Page

DECLARATION OF CONFORMITY

according to ISO/IEC Guide 22 and EN 45014

Manufacturer’s Name:

Manufacturer’s Address:

Agilent Technologies, Inc.

140 Green Pond Road

Rockaway, New Jersey 07866

U.S.A.

declares that the Product

Product Name:

a) AC Power Source/Analyzer

b) Harmonic/Flicker Test System

Model Number(s):

a) Agilent 6814A, 6814B, 6834A, 6834B

b) Agilent 6843A

conforms to the following Product Specifications:

Safety:

EMC:

IEC 1010-1:1990+A1(1992) / EN 61010-1:1993

CISPR 11:1990 / EN 55011:1991 - Group 1 Class A

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 and the EMC Directive 89/336/EEC and carries the CE-marking accordingly.

New Jersey

Location

January 1997

Date

Bruce Krueger / Quality Manager

European Contact: Your local Agilent Sales and Service Office or Agilent GmbH,

Department TRE, Herrenberger Strasse 130, D-71034 Boeblingen (FAX:+49-7031-14-3143)

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.

Edition 1 _________January, 1996

Edition 2 ________December, 1998

Update ________April, 2000

Table of Contents

Warranty Information

Safety Summary

Declaration Page

Acoustic Noise Information

Printing History

Table of Contents

1. GENERAL INFORMATION

Document Orientation

Safety Considerations

Options, Accessories, and User Replaceable Parts

Description

Capabilities

Front Panel/Remote Operation

Output Characteristic

Ranges

Output VA Capability

2. INSTALLATION

Inspection

Damage

Packaging Material

Items Supplied

Cleaning

Location

Bench Operation

Rack Mounting

Input Connections

Input Source and Line Fuse

Installing the Power Cord

Output Connections

Wire Considerations

Voltage Drops

Remote Sense Connections

OVP Considerations

Output Rating

Trigger Connections

Digital Connections

Controller Connections

GPIB Connector

RS-232 Interface

3. TURN-ON CHECKOUT

Introduction

Preliminary Checkout

Using the Keypad

Checkout Procedure

In Case of Trouble

Error Messages

Line Fuse

4. FRONT PANEL OPERATION

Introduction

Front Panel Description

System Keys

Function Keys

Immediate Action Keys

Scrolling Keys

Meter Display Keys

Output Control Keys

Protection and Status Control Keys

Trigger and List Control Keys

Entry Keys

Examples of Front Panel Programming

1 - Setting the Output Voltage Amplitude

Procedure for Three-Phase AC Sources

2 - Setting the Output Frequency

3 - Setting a Protection Feature

4 - Using Transient Voltage Modes

5 - Trigger Delays and Phase Synchronization

6 - Using Slew Rates to Generate Waveforms

7 - Measuring Peak Inrush Current

8 - Setting the GPIB Address and RS-232 Parameters

9 - Saving and Recalling Operating States

10 - Switching Between Single- and Three-phase Operation (Agilent 6834B only)

A. SPECIFICATIONS

Specifications

Supplemental Characteristics

B. VERIFICATION AND CALIBRATION

Introduction

Equipment Required

Test Setup

Performing the Verification Tests

Turn-On Checkout Procedure

Voltage Programming and Measurement Accuracy

RMS Current Readback Accuracy

Performing the Calibration Procedure

Front Panel Calibration Menu

Front Panel Calibration

Enable Calibration Mode

Calibrating and Entering Voltage Calibration Values

Calibrating and Entering Current Calibration Values

Calibrating the Output Impedance (Agilent 6843A only)

Saving the Calibration Constants

Changing the Calibration Password

Calibration Error Messages

Calibration Over the GPIB

Agilent Calibration Program Listing

C. ERROR MESSAGES

Error Number List

INDEX

General Information

Document Orientation

This manual describes the operation of the Agilent Technologies 6814B/6834B/6843A AC Power

Solutions. These units will be referred to as "ac sources" throughout this manual. Operation of the

Agilent 6843A is described for normal mode operation only. The following documents are shipped with

your ac source:

♦

a Quick-Start Guide, to help you quickly get started using the ac source

a User’s Guide, containing detailed installation, checkout, and front panel information

a Programming Guide, containing detailed GPIB programming information

a Quick Reference Card, designed as a memory jogger for the experienced user

Regulatory Test Solution User’s Guides are shipped with Agilent 6843A units only

You will find information on the following tasks in these guides. Refer to the table of contents of each

guide for a complete list of the topics.

Topic

Accessories and options

Calibrating the ac source

Front panel keys

Front panel programming examples

Line voltage connections

Line voltage ratings

Operator replaceable parts

Operator troubleshooting

Operating characteristics

Performance specifications

Quick operating checkout

Rack mounting

Location

Chapter 1 - this guide

Appendix B - this guide

Chapter 4 - this guide

Chapter 2 - this guide

Appendix A - this guide

Chapter 1 - this guide

Chapter 3 - this guide

Appendix A - this guide

Chapter 3 - this guide

Chapter 2 - this guide

Chapter 3 - Programming Guide

Chapter 4 - Programming Guide

Chapter 3 - this guide

Chapter 2 - this guide

RS-232 operation

SCPI programming examples

SCPI programming commands

Turn-on/checkout

Wiring - discrete fault indicator (DFI)

- GPIB controller

- load or loads

- voltage sensing (local and remote)

- remote inhibit (RI)

1 - General Information

Safety Considerations

This ac 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 ac source and review this guide for safety warnings and instructions.

Safety warnings for specific procedures are located at appropriate places in the guide.

Options, Accessories, and User Replaceable Parts

Table 1-1. Options

Option

400

Description

Input power 360-440 Vac, three-phase, 47-63 Hz

1CM

2- Rack mount kit (Agilent 5062-3977)

Support rails (Agilent 5064-0001) are required (rails are not included in rack mount kit).

Table 1-2. Accessories

Item

Agilent Part Number

Fuse replacement kits

30AM for 180-235 Vac, 3-phase line

5060-3513

GPIB cables

10833D

10833A

10833B

0.5 meters (1.6 ft)

1.0 meter (3.3 ft)

2.0 meters (6.6 ft)

10833C

5063-2310

3.0 meters (13.2 ft)

Heavy duty slide mount kit

Table 1-3. User Replaceable Parts List

Description

Agilent Part No.

See “Options”

See “Accessories”

1252-3698

Rack mount kit

Slide mount kit

7-terminal sense connector plug

Sense connector cover

4040-2268

4-terminal digital connector plug

1252-1488

AC input safety cover (with strain relief and brushing)

Screw (4), ac input safety cover (6-32 x 1.5in)

Screw (8), ac input barrier block (8-32 x 5/16in)

AC output safety cover

5001-9837

2360-0405

N/A

5001-9811

Screw (2), ac output safety cover (6-32 x .3in)

Screw (8), ac output barrier block (10-32 x .37in)

Fuse safety cover

2460-0012

N/A

5001-9810

Screw (2), fuse safety cover (6-32 x .3in)

User’s Guide (this manual)

2460-0012

5962-0887

Programming Guide

5962-0889

Quick Start Guide

5962-0883

Quick Reference Card

5962-0885

Appropriate Agilent Regulatory Test Solution Software

Agilent 14761A, 14762A, 14763A

General Information - 1

Description

The ac source combines three instruments in one unit as shown in the following figure. The function

generator produces waveforms with programmable amplitude, frequency, and shape. The power

amplifier amplifies the function generator signal to produce the ac power for your application. The

measurement functions range from a simple readback of rms voltage and current, to sophisticated

capabilities such as waveform analysis.

shunt

SOURCE

DAC

MEASUREMENT

BLOCK

BIPOLAR

WAVEFORM

GENERATOR

AMPLIFIER

POWERMETER

FFT ANALYZER

Figure 1-1. AC Source Functional Elements

The following model ac power sources are described in this User’s Guide:

Model

Description

Agilent 6814B

Agilent 6834B

3000 VA single –phase operation

1500 VA/ phase for three-phase operation

(4500 VA for single-phase operation)

4500 VA single-phase operation

Agilent 6843A

Capabilities

♦

Programmable ac voltage, dc voltage, frequency, phase, and current limit.

Sine, square, clipped sine, and user-definable waveforms.

Voltage and frequency slew control.

Synthesized waveform generation for high resolution and accuracy in frequency, low waveform

distortion, and glitch-free phase transitions.

♦

Step and pulse output transients for generating surge, sag, dropout, and other line disturbance

simulations.

♦

Nonvolatile list programming for generating complex output transients or test sequences.

Three-phase/single-phase output capability (Agilent 6834B only)

Extensive measurement capability:

• Ac rms, dc, ac+dc voltage and current and peak current.

• Real, reactive, and apparent power.

• Harmonic analysis of voltage and current waveforms gives amplitude, phase, and total

harmonic distortion results up to the 50th harmonic.

• Triggered acquisition of digitized voltage and current with extensive post-acquisition

calculations.

1 - General Information

• Additional total power and neutral current measurements in the three-phase model.

• All measurements made with 16-bit resolution.

Trigger In and Trigger Out for synchronizing transient events or measurements with external

signals.

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

generators for voltage and frequency settings.

♦

Built-in GPIB and RS-232 interface programming with SCPI command language.

Nonvolatile state and waveform storage and recall.

Over-voltage, over-power, over-current, over-temperature, and RI/DFI protection features.

Built-in output and sense disconnect relays.

Extensive selftest, status reporting, and software calibration.

Front Panel/Remote Operation

The front panel has both rotary (RPG) and keypad controls for setting the output voltage and frequency.

The panel display provides digital readouts of a number of output measurements. Annunciators display

the operating status of the ac source. System keys let you perform system functions such as setting the

GPIB address and recalling operating states. Front panel Function keys access the ac source function

menus. Front panel Entry keys let you select and enter parameter values. Refer to Chapter 4 for a

complete description of the front panel controls.

Remotely programming is accomplished from either the GPIB bus or from an RS-232 serial port. GPIB

and RS-232 programming uses SCPI commands (Standard Commands for Programmable Instruments)

that make the ac source programs compatible with those of other instruments. AC source status registers

permit remote monitoring of a wide variety of ac source operating conditions

NOTE:

Refer to the ac source Programming Guide for further information about remotely

programming the ac source. If you are using the Agilent 6843A, refer to the appropriate

Regulatory Test Solution User’s Guide for information about regulatory testing.

Output Characteristic

Ranges

The ac source’s output characteristic is shown in the following figure. The output voltage of the ac

source may be adjusted to any value within the range of the unit. On three-phase units, each phase can be

adjusted independently of the other two.

Rated output VA and conversion efficiency is greatest when the output voltage is set near maximum. For

this reason, the ac source is designed to operate on one of two ranges: 150 volts full-scale, or 300 volts

full-scale. You should choose the range that allows you to operate nearest the full-scale output capability

of the selected range.

General Information - 1

Vrms

300 V

150 V

See Figure 1-3

Irms

10A (6834B 3phase)

30A (6834B 1phase)

20A (6814B)

15A

10A

16A

32A (6843A)

Figure 1-2. AC Source Output Characteristic (in real-time mode)

Output VA Capability

The output capability of each output phase is limited by VA (volts-amps) rather than power (watts). The

amount of VA available to a load can be determined by examining figure 1-3, the output power curve.

This curve rates the available VA versus output voltage. Full VA is available only at a full-scale voltage.

Full current is available at voltages between 50% and 100% of the output voltage range. Appendix A

documents the ac source’s specifications and supplemental characteristics.

NOTE:

The load on the ac source may draw full VA at any power factor between 0 and 1, and

may draw maximum current with a crest factor of 4 (3 for Agilent 6843A). If the load

draws current in excess of the maximum rated rms or peak current, the voltage amplitude

will be clipped to prevent excessive internal power dissipation.

100

OUTPUT VOLTAGE, PERCENT OF RANGE

Figure 1-3. AC Source VA Capabilities

Installation

Inspection

Damage

When you receive your ac 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 ac source, save the shipping carton and packing materials in case the unit

has to be returned. If you return the ac source for service, attach a tag identifying the model number and

the owner. Also include a brief description of the problem.

Items Supplied

Check that the following items are included with your ac source. Some items are installed in the unit.

Power Cord

A power cord appropriate for your location. The cord may or may not be terminated in

a power plug (see "Options" in Chapter 1). If the cord is not included, contact your

nearest Agilent Sales and Support Offices (refer to the list at the back of this guide).

Sense/Digital connector a 4-terminal digital plug that connects to the back of the unit.

a 7-terminal sense plug that connects to the back of the unit.

Safety covers

Manuals

Ac input cover with strain relief

Ac output cover

Fuse cover

User’s Guide

Programming Guide

Quick Start Guide

Quick Reference Card

Regulatory Test Solutions Guides (supplied with Agilent 6843A units)

Change page

If applicable, change sheets may be included with this guide. If there are change sheets,

make the indicated corrections in this guide.

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.

2 - Installation

Location

Refer to the Safety Summary page at the beginning of this manual for safety-related information about

environmental conditions.

WARNING: Agilent 6814B units weigh 79.5 kg (175 lbs.)

Agilent 6834B/ 6843A units weigh 87.7 kg (193 lbs.)

Obtain adequate help when moving the unit or mounting the unit in the rack.

Bench Operation

The outline diagram in figure 2-1 gives the dimensions of your ac source. The feet may be removed for

rack mounting. Your ac source must be installed in a location that allows sufficient space at the sides and

back of the unit for adequate air circulation. Minimum clearances are 1 inch (25 mm) along the sides. Do

not block the fan exhaust at the rear of the unit.

Rack Mounting

The ac source can be mounted in a standard 19-inch rack panel or cabinet. Rack mounting kits are

available as Option 1CM or 1CP. Installation instructions are included with each rack mounting kit

CAUTION:

Agilent 6814B/ 6834B/ 6843A units require instrument support rails for non-stationary

installations. These are normally ordered with the cabinet and are not included with the

rack mounting kits.

TOP

574.7mm

22.6"

425.5mm

16.75"

REAR

262.6mm

10.3"

266.7mm

10.5"

19.1mm

0.8"

12.7mm

0.5"

SIDE

Figure 2-1. Outline Diagram

Installation - 2

Input Connections

Input Source and Line Fuse

The ac source requires a 3-phase power service that provides 7350 VA (6000 W) maximum. The power

service should have a current rating greater than or equal to the ac source’s circuit breaker rating. The ac

source has a delta input (no neutral connection) and will accept power from either delta (triangle) or wye

(star) services.

CAUTION:

Two input voltage ranges are available (see "AC Input Ratings" in appendix A). The ac

source will be damaged if it is operated at an input voltage that is outside of its

configured input range.

In order to maintain phase current balancing, the power service should be a dedicated line with only

Agilent 6814B/6834B/6843A ac sources drawing current from it. A disconnect box located near the ac

source is recommended for all installations and is mandatory for direct-wired installations.

Installing the Power Cord

WARNING: Installation of the power cord must be done by a qualified and licensed electrician

and must be in accordance with local electrical codes.

The power cords supplied with the ac source do not include a power plug. Terminating connectors and a

ground lug are attached to one end of the cord. See Figure 2-2 while performing the following

procedure.

Check the line fuses as follows:

Examine the FUSES label on the rear panel.

Remove the safety cover in front of the fuse caps.

Unscrew the line fuse caps from the rear panel and verify that all fuses are as

specified on the label. Reinstall the fuses.

Reinstall the safety cover in front of the fuse caps.

Remove the ac input cover from the back of the unit.

Open the line clamp on the ac input cover and insert the line cord through the opening.

Position the power cord so that the clamp is near the end of the outside insulating sheath

on the power cord. Tighten the screws to secure the clamp.

Secure the three ac lines to the ac power strip as follows:

Phase 1 to L1 (black).

Phase 2 to L2 (red).

Phase 3 to L3 (orange).

Secure the ground wire (green) to the chassis earth ground terminal.

Slip the safety cover over the ac input terminal strip and secure the cover with the four

screws.

If required, wire the appropriate power plug to the other end of the power cord. For user-

made cables, strip back the sheath 10 cm (4 in).

2 - Installation

CAUTION

LINE RATING

WARNING

F 1

F 2

F 3

L 2

L 3

L 1

10cm (4 in.)

Figure 2-2. Connecting the Power Cord

Output Connections

The power output terminal block has a termination for each of the output phases (φ1, φ2, φ3 ) and a

floating neutral line (COM) for the phase return connections. A separate earth ground terminal (⊥) is

located near the output terminals.

Figure 2-3. Output Connections

Installation - 2

NOTE:

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

Wire Considerations

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 ac 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 ac source.

Table 2-1 lists the characteristics of AWG (American Wire Gage) copper wire.

Table 2-1. Ampacity and Resistance of Stranded Copper Conductors

AWG No.

Ampacity¹

Resistance²

AWG No.

Ampacity¹

Resistance²

(Ω/m)

0.0103

0.0065

0.0041

0.0025

0.0016

105

140

195

0.0010

0.00064

0.00040

1/0

NOTES:

1. Ampacity is based on 30°C ambient temperature with conductor rated at 60°C. For ambient

temperature other than 30°C, multiply the above ampacities by the following constants:

Constant

Temp. (°C)

21-25

Temp. (°C)

41-45

Temp. (°C)

0.71

1.08

26-30

1.00

46-50

0.58

31-35

0.91

51-55

0.41

36-40

0.82

2. Resistance is nominal at 75 °C wire temperature.

Voltage Drops

The load wires must also be large enough to avoid excessive voltage drops due to the impedance of the

wires. In general, if the wires are heavy enough to carry the maximum short circuit current without

overheating, excessive voltage drops will not be a problem. The voltage drops across the load wires

should be limited to less than 2% of the output voltage.

Refer to Table 2-1 if you need to calculate the voltage drop for some commonly used AWG copper wire.

2 - Installation

Remote Sense Connections

Under normal operation, the ac source senses the output voltage at the output terminals on the back of the

unit. External sense terminals are available on the back of the unit that allow the output voltages to be

sensed at the load, compensating for impedance losses in the load wiring. As shown in the following

figure:

♦

Connect the phase 1 (φ1) through phase 2 (φ) sense terminals to the side of the load that connects

to the corresponding output terminal.

♦

Connect the Neutral (COM) sense terminal connector to the neutral side of the load.

Twist and shield all signal wires to and from the sense connectors.

The sense leads are part of the ac source’s feedback path and must be kept at a low resistance in order to

maintain optimal performance. Connect the sense leads carefully so that they do not become open-

circuited. If the sense leads are left unconnected or become open during operation, the ac source will

regulate at the output terminals, resulting in a 3% to 5% increase in output over the programmed value.

Set the ALC command to EXT (external) to enable remote sensing. The ALC command is located under

the Voltage key as explained in Chapter 4. Set the ALC command to INT (internal) to disable remote

sensing.

COM φ 3

φ 2

φ1

NOTE: Phase 2 and phase 3 connections are

not available on 6814B/6843A units.

Connector and connections are

rotated 180 degrees for 6843A.

φ1 LOAD

φ1

φ 2

φ 2 LOAD

φ 3 LOAD

φ 3

COM

⊥

Figure 2-4. Remote Sense Connections

Installation - 2

OVP Considerations

The overvoltage protection circuit senses voltage near the output terminals, not at the load. Therefore the

signal sensed by the OVP circuit can be significantly higher than the actual voltage at the load. When

using remote sensing, you must program the OVP trip voltage high enough to compensate for the voltage

drop between the output terminals and the load.

Output Rating

In remote sense applications, the voltage drop in the load leads subtracts from the available load voltage

(see "Remote Sensing Capability" in appendix A). As the ac source increases its output to overcome this

voltage drop, the sum of the programmed voltage and the load-lead drop may exceed the ac source’s

maximum voltage rating. This will not damage the unit, but may trip the OV protection circuit, which

senses the voltage at the output terminals.

Trigger Connections

The BNC trigger connectors on the rear panel let you apply trigger signals to the ac source as well as

generate trigger signals from the ac source. The electrical characteristics of the trigger connectors are

described in appendix A. More information on programming external triggers is found in Chapter 4 of

the ac source Programming Guide.

Trigger IN

Allows negative-going external trigger signals to trigger the ac source.

Trigger OUT

Generates a negative-going pulse when the selected transient output has occurred.

Digital Connections

This connector, which is on the rear panel, is for connecting the fault and the inhibit signals. The fault

(FLT) signal is also referred to as the DFI signal in the front panel and SCPI commands. The inhibit

(INH) signal is also referred to as the RI signal in the front panel and SCPI commands.

The connector accepts wires sizes from AWG 22 to AWG 12. Disconnect the mating plug to make your

wire connections. The electrical characteristics of the digital connectors are described in appendix A.

More information on programming the digital connectors is found in Chapter 4 of the ac source

Programming Guide.

NOTE:

It is good engineering practice to twist and shield all signal wires to and from the digital

connectors

The following examples show how you can connect the FLT/INH circuits of the ac source.

In example A, the INH input connects to a switch that shorts pin + to pin ⊥ whenever it is necessary to

disable output of the unit. This activates the remote inhibit (RI) circuit, which turns off the ac output. The

front panel Prot annunciator comes on and the RI bit is set in the Questionable Status Event register. To

re-enable the unit, first open the connection between pins + and ⊥ and then clear the protection circuit.

This can be done either from the front panel or over the GPIB /RS-232.

2 - Installation

In example B, the FLT output of one unit is connected to the INH input of another unit. A fault condition

in one of the units will disable all of them without intervention either by the controller or external

circuitry. The controller can be made aware of the fault via a service request (SRQ) generated by the

Questionable Status summary bit.

INH

FLT

NOTE: Diagram is correct for 6814B/6834B.

Connector and connections are rotated 180

degrees for 6843A

. . . .

FLT Output

INH

FLT

INH Input

. . . .

INH Common

INH Input

Switch

(Normally

Open)

FLT Output

B) FLT Example with Multiple Units

A) INH Example with One Unit

Figure 2-5. FLT/INH Examples

Controller Connections

The ac source connects to a controller either through a GPIB or an RS-232 connector.

GPIB Connector

Each ac source has its own GPIB bus address. AC sources may be connected to the bus in series

configuration, star configuration, or a combination of the two. You may connect from 1 to 15 ac sources

to a controller GPIB interface.

NOTE:

The ac source is shipped from the factory with its GPIB address set to 5. This address

can be changed as described in Chapter 4 of this guide.

Installation - 2

RS-232 Interface

The ac source provides an RS-232 programming interface, which is activated by commands located under

the front panel Address key. When the RS-232 interface is selected, the GPIB interface is disabled.

NOTE:

Sending or receiving data over the RS-232 interface when not configured for REMOTE

operation can cause unpredictable results. Always make sure the ac source is configured

for remote operation when using the RS-232 interface.

Interface Commands

All SCPI commands are available through RS-232 programming. The SYSTem:LOCal,

SYSTem:REMote, and SYSTem:RWLock commands are only available through the RS-232 interface.

SYSTem:LOCal

keys

Places the ac source in local mode during RS-232 operation. The front panel

are functional.

SYSTem:REMote

SYSTem:RWLock

Places the ac source in remote mode during RS-232 operation. All front panel

keys except the Local key are disabled.

Places the ac source in remote mode during RS-232 operation. All front panel

keys including the Local key are disabled.

RS-232 Data Format

♦

constant 11-bit data format

one start bit

seven data bits plus a parity bit (even or odd parity), or eight data bits without parity

(parity bit is "0")

two stop bits

♦

You can specify one of the following baud rates: 300 600 1200 2400 4800 9600

NOTE:

The ac source always uses one start bit and two stop bits regardless of the baud rate. The

number of start and stop bits is not programmable.

RS-232 Connector

The RS-232 connector is a DB-9, male connector. You can connect the ac source to any computer or

terminal with a properly configured DB-25 connector. You can use a standard Agilent 24542G or

24542H interface cable.

Table 2-2. RS-232 Connector

Input/Output

Output

Description

1 2 3 4 5

Reserved for service use

Receive Data (RxD)

Transmit Data (TxD)

Data Terminal Ready (DTR)

Signal ground

Input

Output

Common

Input

Data Set Ready (DSR)

no connection

6 7 8 9

no connection

Output

Reserved for service use

2 - Installation

Hardware Handshake

The RS-232 interface uses the DTR (data terminal ready) line as a holdoff signal to the bus controller.

When DTR is true, the bus controller may send data to the ac source. When DTR goes false, the bus

controller must stop sending data within 10 characters, and must not send any more data until DTR goes

true again. The ac source sets DTR false under two conditions.

When the input buffer is full (approximately 100 characters have been received), it will set DTR

false. When enough characters have been removed to make space in the input buffer, DTR will

be set to true, unless condition 2 (see below) prevents this.

When the ac source wants to "talk", which means that it has processed a query, and has seen a

<newline> message terminator, it will set DTR false. This implies that once a query has been

sent to the power source, the bus controller should read the response before attempting to send

more data. It also means that a <newline> must terminate the command string. After the response

has been output, the ac source will set DTR true again, unless condition #1 prevents this.

The ac source monitors the DSR (data set ready) line to determine when the bus controller is ready to

accept data. It checks this line before each character is sent, and the output is suspended if DSR is false.

When DSR goes true, transmission will resume. The ac source will leave DTR false while output is

suspended. A form of deadlock exists until the bus controller asserts DSR true to allow the ac source to

complete the transmission.

Control-C is the equivalent to the GPIB device clear command. It clears the operation in progress and

discards any pending output. For the control-C character to be recognized by the power source while it

holds DTR false, the bus controller must first set DSR false.

Null modem RS-232 interface cables swap the DTR and DSR lines as shown in the following figure. For

other bus controllers or languages, you must determine what form of hardware handshake is used. You

may have to build a customized cable to connect the holdoff lines as necessary. If your bus controller

does not use hardware handshaking, tie the DSR input to the ac source to a signal that is always true.

This implies that your bus controller must always be ready to accept data. You may want to set the baud

rate to either 2400 or 4800 baud to ensure that this is true.

bus controller

ac source

TxD (3)

RxD (2)

DTR (4)

TxD (3)

RxD (2)

*DTR (4)

*DSR (6)

DSR (6)

Ground (5)

Figure 2-7. Null Modem Interface Lines

Response Data Terminator

All RS-232 response data sent by the ac source is terminated by the ASCII character pair <carriage

return><newline>. This differs from GPIB response data which is terminated by the single character

<newline>.

Turn-On Checkout

Introduction

Successful tests in this chapter provide a high degree of confidence that the ac source is operating

properly. For verification tests, see appendix B. Complete performance tests are given in the Service

Guide.

NOTE:

This chapter provides a preliminary introduction to the ac source front panel. See

Chapter 4 for more details.

Preliminary Checkout

WARNING: LETHAL VOLTAGES. Ac sources can supply 425 V peak at their output. DEATH

on contact may result if the output terminals or circuits connected to the output are

touched when power is applied.

If you have not already done so, connect the power cord to the ac source and plug it in.

Turn the front panel power switch to ON (1).

The ac source undergoes a self-test when you turn it on. The following items appear on the

display:

a. A brief pattern that lights all display segments, followed by the model number and the

software revision number.

b. The display then goes into the meter mode with the Dis annunciator on, and all others off.

"Meter mode" means that the VOLTS digits indicate the output voltage and the FREQ digits

indicate the output frequency. The voltage will be at or near zero and the frequency will be at 60

Hertz.

NOTE:

If the ac source detects an error during self-test, the Err annunciator on the display will

be lit. Pressing the Shift and Error keys will show the error number. Go to "In Case of

Trouble" at the end of this chapter.

Check that the ac source fan is on. You should be able to hear the fan and feel the air coming

from the unit.

Press Output on/off once. The Dis annunciator will go off and the CV annunciator will go on.

If the programmed voltage is less than 20% of the voltage range, the Unr annunciator may go on.

Turn the unit off.

3 - Turn-On Checkout

Using the Keypad

(shift)

Some of the front panel keys perform two functions, one labeled in black and

the other in blue. You access the blue function by first pressing the blue

shift key. Release the key after you press it. The Shift annunciator will be on,

indicating that you have access to any key’s shifted function.

And

and

These keys let you scroll up and down through the choices in the presently

selected function menu. All menu lists are circular; you can return to the

starting position by continuously pressing either key.

These keys let you select the previous or the next parameter for a specific

command. If the command has a numeric range, these keys increment or

decrement the existing value.

The backspace key is an erase key. If you make a mistake entering a digit and

have not yet pressed Enter, you can delete the digit by pressing -. Delete

more digits by repeatedly pressing this key.

Enter

Executes the entered value or parameter of the presently accessed command.

Until you press this key, the parameters you enter with the other keys are

displayed but not entered into the ac source. After pressing Enter, the ac

source returns to Meter mode in most cases. In Harmonic or List mode, the ac

source displays the next point in the list.

Checkout Procedure

WARNING: LETHAL VOLTAGES. Ac sources can supply 425 V peak at their output. DEATH

on contact may result if the output terminals or circuits connected to the output are

touched when power is applied.

The output test requires that you connect light bulbs to the output of the unit and apply a

potentially hazardous voltage of 120 Vac. Properly shield all connections and wires.

The test in this section checks for output voltage and current on the ac source by having you connect light

bulbs to the output of the unit. The following equipment is recommended for performing this output

checkout procedure:

♦

1 - 100 W light bulb for Agilent 6814B/6843A; 3 - 100 W light bulbs for Agilent 6834B

1 - light bulb socket for Agilent 6814B/6843A; 3 - sockets for Agilent 6834B

wires for connecting socket to the unit

NOTE:

When the ac source is turned on as shipped from the factory, it asserts the *RST state.

You can subsequently program the unit to turn on according to the state stored in *RCL

location 0, as explained in Chapter 4. The following procedures assume that the unit

turns on in the *RST state.

Turn-On Checkout - 3

Make sure that the unit is turned off, and make the following connections to the output. If you are

verifying a single phase source, you only need to connect one bulb.

Figure 3-1.Verification Connections

Procedure

Display

Explanation

Turn the unit on.

Meter mode

Meter mode is active and the Dis annunciator should be

on.

VOLT 0.00

Display indicates the default settings.

If you are verifying a three phase source, all phase

annunciators should be on.

Press the Voltage key.

VOLT 0.00

VOLT 120

Single phase units use only phase 1.

Press Phase Select

until only φ1 is lit.

Programs the output on phase 1 to 120 Vrms. After the

value is entered, the display returns to Meter mode,

which indicates that no voltage is applied to the output.

Press 1, 2, 0, Enter

120 V 60 Hz

Turns the output on and applies 120 volts to the phase 1

light bulb. The Dis annunciator should be off and CV

should be on.

Press Output On/Off

If you are verifying three phase sources, repeat steps 2 through 4 for phase 2 and phase 3. All three

light bulbs should be lit when this action is complete.

Continue with step 6 of you are verifying three phase sources. Otherwise skip to step #10.

VOLT 120

Press the Voltage key.

Press Phase Select

until all phase

annunciators are lit

VOLT 0

Turns off all light bulbs connected to the three-phase

source.

Press 0, Enter

VOLT 120

PROT:CLEAR

Turns on all light bulbs connected to the three-phase

source.

Press Voltage 1, 2, 0,

Enter

10.

Display accesses the protection menu list.

Press Protect

3 - Turn-On Checkout

Procedure

Display

Explanation

11.

12.

Press or ô and scroll

to the VOLT:PROT item

VOLT:PROT 500

Display shows the overvoltage protection trip voltage

for your unit. The overvoltage protection voltage is

programmed in peak, not rms volts.

VOLT:PROT 160

0 V 60 Hz

Programs the OVP to 160 Vpeak, the rms value of

which is less than the previously set rms voltage.

Press 1, 6, 0, Enter

Because the peak OVP voltage entered was less than the

rms output voltage, the OVP circuit tripped. The output

dropped to zero, CV turned off, and Prot turned on.

13.

VOLT:PROT 320

Programs the OVP to a peak value that is greater than

the rms output voltage value.

Note: You cannot clear an OVP trip until you have first

removed the cause of the condition.

Press Protect, scroll to

the VOLT:PROT item,

and press 3, 2, 0, Enter

14.

15.

16.

120 V 60 Hz

CURR:LEV 5

CURR:LEV .5

Executes the PROT:CLEAR command, restoring the

output. Prot turns off and CV turns on.

Press Protect, and

Enter

Indicates the default output current limit setting.

Press Shift, and

Current

Press . 5 Enter

Sets the current limit to .5 amperes. The CC

annunciator is on, indicating that the unit is in current

limit mode and the light bulbs are dimmer because the

output voltage has dropped in its attempt to limit output

current.

17.

CURR:PROT ON

You have enabled the overcurrent protection circuit.

The circuit then tripped because of the output short. The

CC annunciator turns off and the OCP and Prot

annunciators come on. The output current is near zero.

Press Protect, scroll to

the CURR:PROT item,

and press ° to select ON.

Then press Enter.

18.

19.

0.5 V 60 Hz

The output is off and the Dis annunciator turns on.

Press Output On/Off

CURR:PROT OFF

You have disabled the overcurrent protection circuit.

The Prot annunciator turns off.

Press Protect, scroll to

the CURR:PROT item,

press ° to select OFF,

then press Enter.

20.

Turn the unit off.

The next time the unit turns on it will be restored to the

*RST or factory default state

Turn-On Checkout - 3

In Case of Trouble

Error Messages

Ac source failure may occur during power-on selftest or during operation. In either case, the display may

show an error message that indicates the reason for the failure.

Selftest Errors

Pressing the Shift and Error keys will show the error number. Selftest error messages appear as:

ERROR <n>, where "n" is a number listed in the following table. If this occurs, turn the power off and

then back on to see if the error persists. If the error message persists, the ac source requires service.

Table 3-1. Power-On Selftest Errors

Error No.

Error 0

Failed Test

No error

Error 1

Non-volatile RAM RD0 section checksum failed

Non-volatile RAM CONFIG section checksum failed

Non-volatile RAM CAL section checksum failed

Non-volatile RAM WAVEFORM section checksum failed

Non-volatile RAM STATE section checksum failed

Non-volatile RAM LIST section checksum failed

RAM selftest

Error 2

Error 3

Error 4

Error 5

Error 6

Error 10

Error 11 to 18

DAC selftest 1 to 8

Runtime Error Messages

Under unusual operating conditions, the front panel display may show OVLD. This indicates that the

output voltage or current is beyond the range of the meter readback circuit. If the front panel display

indicates -- -- -- -- -- -- , a GPIB measurement is in progress. Appendix C lists other error messages that

may appear at runtime.

Line Fuse

If the ac source appears "dead" with a blank display and the fan not running, first check your power

source to be certain line voltage is being supplied to the ac source. If the power source is normal, the ac

source line fuse may be defective. If the ac source has a defective fuse, replace it only once. If it fails

again, investigate the reason for the failure. Proceed as follows:

Turn off the front panel power switch and remove the input power (unplug the power cord or

open the safety disconnect).

Remove the fuse cover from the rear panel.

Unscrew the fuse caps and remove the fuses.

If any fuses are defective, replace all three with fuses of the same type (see Chapter 1).

Turn on the ac source and check the operation. If it is normal. replace the fuse cover.

Maintenance Note: It is recommended that new fuses be installed every four years.

Front panel Operation

Introduction

Here is what you will find in this chapter:

♦

a complete description of the front panel controls

front panel programming examples that describe:

• how to program the output voltage and frequency

• how to measure the output

• how to program the output pulses and lists

• how to trigger output changes

Front Panel Description

Figure 4-1. Front Panel, Overall View

4 - Front Panel Operation

14-character vacuum fluorescent display for showing programmed commands

and measured values.

j Display

Annunciators light to indicate operating modes and status conditions:

k Annunciators

φ1, φ2, φ3 Phase 1, 2, or 3 is being controlled or metered.

The ac source output is in constant-voltage mode.

The ac source output is in constant-current mode.

Unr The ac source output is in an unregulated state.

Dis The ac source output is disabled (off).

Tran The ac source output is initialized to output a transient.

OCP The overcurrent protection state is enabled.

Prot One of the ac source’s output protection features is activated.

Cal

The ac source is in calibration mode.

Shift The Shift key is pressed to access an alternate key function.

Rmt The selected interface (GPIB or RS-232) is in a remote state.

Addr The interface is addressed to talk or to listen.

Err There is a message in the SCPI error queue.

SRQ The interface is requesting service from the controller.

Meter Front panel measurement functions are: ac only, dc only, or ac+dc

AC+DC

Output The ac source output coupling is: ac only, or ac+dc

AC+DC

The rotary pulse generators let you set the output voltage and frequency when the

ac source is in local mode. Their response is rate sensitive.

l Voltage/

Frequency

Turning a control rapidly provides coarse control of the value.

Turning a control slowly provides fine control of the value.

This turns the ac source on or off.

n Line

The system keys let you:

o System Keys

Return to Local mode (front panel control)

Set the ac source GPIB address

Set the RS-232 interface communication baud rate and parity bit

Display SCPI error codes and clear the error queue

Save and recall up to 4 instrument operating configurations

Function access command menus that let you:

Program output voltage, current limit, frequency, and output waveforms

Turn the output on and off

p Function Keys

Select metering functions

Send immediate triggers from the front panel

Program transient output functions

Set and clear protection functions

Select output phases

Select the coupling for output and meter functions

Monitor instrument status

Entry keys let you:

q Entry Keys

Enter programming values

Increment or decrement programming values

Calibrate the ac source

Front Panel Operation - 4

System Keys

Refer to the examples later in this chapter for more details on the use of these keys.

SYSTEM

Local

Error

Address

Save

Recall

Figure 4-2. System Keys

Shift

This is the blue, unlabeled key, which is also shown as

Pressing this key accesses the alternate or shifted function of a key (such as

ERROR ). Release the key after you press it. When the Shift annunciator is lit,

the shifted keys are active.

in this guide.

Local

Press to change the ac source’s selected interface from remote operation to local

(front panel) operation. Pressing the key will have no effect if the interface state

is already Local, Local-with-Lockout, or Remote-with-Lockout.

Address

Press to access the system address menu. This menu lets you configure the ac

source’s interface and other system parameters. Address Menu entries are stored

in non-volatile memory.

Display

ADDRESS <value>

Command Function

Sets the GPIB Address

INTF <char>

Selects an interface (GPIB or RS232)

BAUDRATE<value> Selects baud rate (300, 600, 1200, 2400, 4800, 9600)

PARITY <char>

LANG <char>

Message parity (NONE, EVEN, ODD, MARK, SPACE)

Selects language (SCPI or E9012)

NOUTPUTS <char>

Select number of output phases on Agilent 6834B only (1 or 3)

value = a numeric value

char = a character string parameter

Use

and

to scroll through the command list.

to scroll through the parameter list.

Recall

Shift

Press to place the ac source into a previously stored state. You can recall up to

16 (0 through 15) previously stored states.

Error

Save

Press to display the system error codes stored in the SCPI error queue. This

action also clears the queue. If there is no error in the queue, 0 is displayed.

Shift

Press to store an existing ac source state in non-volatile memory. The parameters

saved are listed under *SAV in the ac source Programming Guide. You can

save up to 16 states (0 through 15).

4 - Front Panel Operation

Function Keys

Refer to the examples later in this chapter for more details on the use of these keys.

FUNCTION

Current

Harmonic

Meter

Index

Voltage

Phase

Freq

Output

Input

Index

Status

Shape

Phase

Protect

Select

List

Trigger

Output

on/off

Trigger

Control

Pulse

Figure 4-3. Function Keys

Immediate Action Keys

Immediate action keys immediately execute their corresponding function when pressed. Other function

keys have commands underneath them that are accessed when the key is pressed.

Output

On/Off

This key toggles the output of the ac source between the on and off states. It

immediately executes its function as soon as you press it. When off, the ac

source output is disabled and the Dis annunciator is on.

Phase

Select

This key only applies to three-phase ac sources. It selects the phase to which

function commands will be sent, as well as the phase that will be monitored by

the Meter and Harmonic functions. At power-on, all phases are selected or

coupled, indicating that commands will be sent to all phases. The presently

selected phase is indicated by a phase annunciator. Pressing Phase Select

immediately selects a different phase. Phase selection is circular; you can return

to the starting position by continuously pressing Phase Select.

Annunciator On Phase Selected

φ1, φ2, φ3

All phases selected (phases coupled= ALL)¹

Phase #1 selected (phases coupled= NONE)

Phase #2 selected (phases coupled= NONE)

Phase #3 selected (phases coupled= NONE)

φ1

φ2

φ3

¹Does not apply to Meter or Harmonic functions.

When the Meter and Harmonic functions are active, Phase Select only rotates

through 1, 2, and 3. This is because the Meter and Harmonic functions cannot

display multiple phase readings simultaneously. Therefore, it is not possible to

select all phases with these functions.

Shift

Trigger

Sends an immediate trigger to the ac source

Front Panel Operation - 4

Scrolling Keys

Scrolling keys let you move through the commands in the presently selected function menu.

These scroll keys let you move through the choices in a command list.

Press

to bring up the next command in the list. Press

to go back

to the previous command in the list. Function menus are circular; you can

return to the starting position by continuously pressing either key. The

following example shows the commands in the Input function menu:

Shift

Index

These shifted scroll keys apply only to the Harmonic and List functions.

Press these keys to step through integers 0 through 50 when specifying the

desired harmonic number, or 0 through 99 when specifying the desired list

point. Hold down these keys to rapidly access any harmonic or list point.

These Entry keys let you scroll through choices in a parameter list that apply

to a specific command. Parameter lists are circular; you can return to the

starting position by continuously pressing either key. If the command has a

numeric range, these keys increment or decrement the existing value.

Meter Display Keys

Metering keys control the metering functions of the ac source.

Meter

Press this key to access the meter menu list.

Display

Measurement

<reading>V <reading>Hz

<reading>V <reading>A

<reading>A <reading>Hz

<reading>V <reading>W

<reading> CREST F

<reading>A PK REP

<reading>A PK NR

<reading> VA

rms voltage and frequency (the default)

rms voltage and rms current

rms current and frequency (the default)

rms voltage and power

current crest factor

peak current, repetitive

peak current, nonrepetitive¹

apparent power

<reading> VAR

reactive power

<reading>W TOTAL

<reading> PFACTOR

<reading>A NEUTRAL

total power of all phases²

power factor

neutral rms current²

Input

Press this key to specify the following metering functions.

Display

INP:COUP <char>

WINDOW <char>

Command Function

Choose meter coupling (AC, DC or ACDC)

Select harmonic measurement window meter

(KBESSEL, RECT)

Notes:

¹Displays the highest peak current since it was last cleared. The value is cleared when

Enter

Clear Entry

you scroll into this selection or press

²This selection only valid for Agilent 6834B

reading = the returned measurement

char = a character string parameter

and

scroll through the command list.

scroll through the parameter list.

4 - Front Panel Operation

Shift

Harmonic

Press this key to access the harmonic menu list

Display

Measurement

current harmonic magnitude

current harmonic phase

voltage harmonic magnitude

voltage harmonic phase

neutral current harmonic magnitude

neutral current harmonic phase

current total % harmonic distortion

voltage total % harmonic distortion

<reading>° I:PHASE: <index>

<reading>° V:PHASE: <index>

<reading>° N:PHASE: <index>

<reading>° CURR:THD

<reading>° VOLT:THD

Output Control Keys

Output control keys control the output functions of the ac source.

Voltage

Press this key to access the voltage menu list.

Display

Command Function

VOLT <value>

Set immediate rms output voltage (φ)

VOLT:T<value>

VOLT:M <char>

RANGE <char>

SLEW <value>

SLEW:T<value>

SLEW:M <char>

ALC <char>

Set triggered rms output voltage (φ)

Select the voltage mode (φ) (FIXED, STEP, PULSE or LIST)

Select the voltage range (φ) (150 or 300)

Set immediate voltage slew rate in volts/second (φ)

Set triggered voltage slew rate in volts/second (φ)

Select the voltage slew mode (φ) (FIXED, STEP, PULSE or LIST)

Select the voltage sense source (INT or EXT)

Shift

Freq

Current

Press this key to access the current menu list.

Display Command Function

CURR:LEV <value> Set immediate rms output current limit

Press this key to access the frequency menu list.

Display

Command Function

Set immediate output frequency

Set triggered output frequency

Select the frequency mode (FIXED, STEP, PULSE or LIST)

Set immediate frequency slew rate in volts/second

Set triggered frequency slew rate in volts/second

Select the frequency slew mode (FIXED, STEP, PULSE or LIST)

FREQ <value>

FREQ:T<value>

FREQ:M <char>

SLEW <value>

SLEW:T<value>

SLEW:M <char>

Notes:

φ = phase selectable on Agilent 6834B

reading = the returned measurement

index = a numeric value that represents the harmonic number from 0 to 50

char = a character string parameter

and

scroll through the command list.

scroll through the parameter list.

Index

and

specify the desired harmonic.

Front Panel Operation - 4

Shift

Phase

Press this key to access the phase menu list.

Display

Command Function

PHASE <value>

Set immediate output phase (φ)

PHASE:T <value>

PHASE:M <char>

Set triggered output phase (φ)

Select the phase mode (φ) (FIXED, STEP, PULSE or LIST)

Shape

Press this key to access the shape menu list.

Display

SHAPE <char>

Command Function

Select the immediate output wave shape ¹(SINE, SQUARE,

or CSINE) CSIN = clipped sine wave

SHAPE:T <char>

Select the triggered output wave shape (SINE, SQUARE, or

CSINE) CSIN = clipped sine wave

SHAPE:M <char>

CLIP <value>

Select the shape mode (FIXED, STEP, PULSE or LIST)

Set the clipping level of the CSIN wave shape. This

specifies the point where clipping starts as a percentage of

the peak amplitude or percentage of THD.

Pulse

Press this key to access the pulse menu list.

Display

Command Function

Set the pulse width

Set the number of output pulses

Set the pulse duty cycle as a percentage of the pulse period

Set the pulse period

WIDTH <value>

COUNT <value>

DCYCLE <value>

PER <value>

HOLD <char>

Set the parameter that will be held constant as the other

parameters change (WIDTH or DCYCLE)

Shift

Output

Press this key to access the output menu list.

Display

*RST

Command Function

Execute *RST command to place the ac source in the

factory-default state

TTLT:SOUR <char>

Select Trigger Out source coupling (BOT, EOT or LIST)

BOT = beginning of transient

EOT = end of transient

LIST = TTLT trigger (see Programming Guide)

TTLT:STATE <value> Set Trigger Out state (ON or OFF)

PON:STATE <char>

RI <char>

DFI <char>

Select power-on state command (RST or RCL0)

Sets remote inhibit mode (LATCHING, LIVE, or OFF)

Sets discrete fault indicator state (ON or OFF)

Select the DFI source (QUES, OPER, ESB, RQS, or OFF)

(see Chapter 4 of Programming Guide)

DFI:SOUR <char>

Notes:

¹User defined waveshapes will also appear in this list when created.

φ = phase selectable on Agilent 6834B

value = a numeric value

char = a character string parameter

and

scroll through the command list.

scroll through the parameter list.

4 - Front Panel Operation

Protection and Status Control Keys

The Protect and Status keys control the protection functions and status registers of the ac source. Refer to

Chapter 4 of the Programming guide for more information on the status registers.

Protect

Press this key to access the protection menu list.

Display

PROT:CLEAR

Command Function

Clear the status registers of all activated protection signals.

The fault causing a signal must be corrected or removed

before the register can be cleared.

CURR:PROT <char>

VOLT:PROT <value>

DELAY <value>

Set overcurrent protection function (ON or OFF).

Set the overvoltage protection level¹

Set the time delay for activating a protection fault after

programming the output

Shift

Status

Press this key to access the status menu list. Note that in the following list, commands

ending in ? clear the registers when they are read. For this reason the registers are read

Enter

only after you press

, not when you scroll to the command

Display

*CLS

STATUS:PRESET

*ESR? <value>

*STB <value>

Command Function

Executes the clear status (*CLS) command

Execute the STATus:PRESet command

Return Event Status register value

Return Status Byte register value

OPER:EVEN? <value> Return STAT:OPER:EVENT? value

OPER:COND <value> Return STAT:OPER:COND? value

QUES:EVEN? <value> Return STAT:QUES:EVENT? value

QUES:COND <value>

Return STAT:QUES:COND? value

Notes:

¹Programmed in peak volts. (Other voltage parameters are programmed in rms volts)

value = a numeric value

char = a character string parameter

and

scroll through the command list.

scroll through the parameter list.

Front Panel Operation - 4

Trigger and List Control Keys

The Trigger Control key controls output transient triggers. The List key controls the generation of output

lists. A list can contain up to 100 points, each of which can specify an output change (or transient). Refer

to Chapter 4 of the Programming Guide for more information about programming triggers and lists.

Trigger

Control

Press this key to access the trigger control menu list.

Display

INIT:IMMED

INIT:CONT <char>

TRIG:SOUR <char>

Command Function

Initiate the transient trigger sequence immediately.

Set continuous trigger initiation (ON or OFF).

Select transient trigger source (BUS, EXT, TTLT or

IMM).

DELAY <value>

ABORT

Set trigger delay in seconds.

Abort all trigger sequences.

SYNC:SOUR <char>

SYNC:PHASE <value>

Select trigger sync source (PHASE or IMM).

Set synchronous phase reference angle in degrees.

Shift

List

Press this key to access the list commands

Display

COUNT <value>

Command Function

Specifies the number of times a list repeats.

List of output dwell times.

DWEL:<index> <value>

FREQ:<index> <value>

FSLW:<index> <value>

PHASE:<index> <value>

SHAP:<index> <char>

List of output frequencies.

List of output frequency slew rates

List of output voltage phase angles (φ)

List of output waveform shapes.¹

(SINE, SQUARE or CSIN) CSIN = clipped sine wave

Response of list to triggers (ONCE or AUTO).

List of Trigger Out pulses (0=no pulse; 1=pulse).

List of ac output voltages (φ)

STEP<char>

TTLT:<index> <value>

VOLT:<index> <value>

VSLW:<index> <value>

List of output voltage slew rates (φ)

Notes:

¹User-defined waveshapes will also appear in this list when created.

φ = phase selectable on Agilent 6834B

value = a numeric value

char = a character string parameter

index = a numeric value that represents a list point from 0 to 99

and

scroll through the command list.

scroll through the parameter list.

Index

and

scroll through the desired list points. EOL is displayed when the

automatically

truncates or clears the list at the

end of the list is reached. When a value is edited, pressing

advances to the next list point. Pressing

presently displayed list point.

Enter

Clear Entry

4 - Front Panel Operation

Entry Keys

Refer to the examples later in this chapter for more details on the use of these keys.

ENTRY

Calibration

Enter

Clear Entry

Figure 4-4. Entry Keys

These keys let you scroll through choices in a parameter list that apply to a

specific command. Parameter lists are circular; you can return to the starting

position by continuously pressing either key. If the command has a numeric

range, these keys increment or decrement the existing value.

through

are used for entering numeric values.

is the decimal

−

point. For example, to enter 33.6 press: 3 3 . 6 Enter.

The backspace key deletes the last digit entered from the keypad. This key lets

you correct one or more wrong digits before they are entered.

Enter

This key executes the entered value or parameter of the presently accessed

command. Until you press this key, the parameters you enter with the other

Entry keys are displayed but not entered into the ac source. Before pressing

Enter

you can change or abort anything previously entered into the display.

After Enter is pressed, the ac source returns to Meter mode in most cases. In

Harmonic or List mode, the ac source displays the next point in the list.

Shift

This key specifies an exponential power of 10. For example, the value for

100µs can be entered as either . 0 0 0 1 , or as 1 E − 4

−

Shift

This key − is the minus sign.

This key aborts a keypad entry by clearing the value. This key is convenient for

correcting a wrong value or aborting a value entry. The display then returns to

Clear Entry

the previously set function. When editing a list, pressing

truncates

or clears the list at the presently displayed list point.

Shift

This key accesses the calibration menu (Refer to Appendix B to calibrate your

ac source).

Calibration

Front Panel Operation - 4

Examples of Front Panel Programming

You will find these examples on the following pages:

Setting the output voltage amplitude

Setting the output frequency

Setting the overcurrent protection feature

Generating step, pulse, and list transients

Programming trigger delays and phase synchronization

Programming slew rates

Measuring peak inrush current

Setting the GPIB address or RS-232 parameters

Saving and recalling operating states

Switching between single- and three- phase operation (Agilent 6834B only)

The examples in the ac source Programming Guide are similar to the ones in this section, except that they

use SCPI commands.

1 - Setting the Output Voltage Amplitude

NOTE:

The maximum voltage that the ac source can output is limited by the peak value of the

waveform, which is 425 V_peak. Since the output is programmed in units of rms volts, the

maximum value that can be programmed is dependent on the peak-to-rms ratio of the

selected waveform. For a sinewave, the maximum ac voltage that can be programmed is

300 V_rms. For other waveforms the maximum may be different.

Procedure for Single-Phase AC Sources

When you turn on the ac source, the default output shape is a 60 Hz sinewave at 0 Vrms. There is no

output from the ac source because the default output state is OFF, as indicated by the Dis annunciator.

Set the output to 120 V rms as follows:

Action

Display

You can set the voltage in any of three ways:

VOLT 120

VOLT 127

On the Function keypad, press Voltage. On the Entry keypad, press 1 2 0 Enter.

This is the easiest way to enter an accurate value.

On the Function keypad, press Voltage. On the Entry keypad, press ¯ or ° to

increment or decrement the existing value. This technique is useful when you are

making minor changes to an existing value.

Rotate the front panel Voltage knob to obtain 120 V. This method is best when you

want to enter a value without using the voltage menu.

120 V 60 Hz

Note: You will not see the new voltage on the front panel meter unless the output is

enabled.

To enable the output:

120 V 60 Hz

On the Function keypad, press Output On/Off. The Dis annunciator will go off,

indicating that the voltage is now applied to the output terminals.

4 - Front Panel Operation

Procedure for Three-Phase AC Sources

If you have a three-phase ac source, you can set the rms voltage of all three phases identically, or set each

one differently. This is controlled via the Phase Select Menu on the Function keypad.

The following example shows how you can set the phase 1 output to 120 Vrms, phase 2 to 180 Vrms,

and phase 3 to 235 Vrms.

Action

Display

VOLT

On the Function keypad, press Voltage. Note that in the power-on default state, the

φ1, φ2, and φ3 annunciators are all lit, indicating that any command sent to the

instrument will be sent to all three phases.

VOLT

Scroll through the phase selections by pressing Phase Select

Pressing Phase Select moves you through phases 1, 2, and 3, as indicated by the

phase annunciators. Pressing it once more returns you to the first state with all three

phase annunciators on.

VOLT 120

VOLT 180

VOLT 235

235 V 60 Hz

While in the Voltage menu press Phase Select to access Phase 1. On the Entry pad

press 1 2 0 Enter.

Access the Voltage menu again and press Phase Select once to access Phase 2. On

the Entry pad press 1 8 0 Enter.

Access the Voltage menu again and press Phase Select once to access Phase 3. On

the Entry pad press 2 3 5 Enter.

Press Output On/Off to enable the output. The Dis annunciator will go off,

indicating that the voltages are now applied to the output terminals.

To verify the output, you can measure it as follows:

235 V 60 Hz

120 V 60 Hz

180 V 60 Hz

235 V 60 Hz

Note that the φ3 annunciator is on, indicating that you are monitoring the last phase

you selected, which was Phase 3.

Press Phase Select once. The φ1 annunciator will light, indicating that you are

now monitoring Phase 1.

Press Phase Select once. The φ2 annunciator will light, indicating that you are

now monitoring Phase 2.

10.

Press Phase Select once. The φ3 annunciator will light, indicating that you are

now monitoring Phase 3 again.

NOTE:

The Meter menu does not go to the all-phases state present in the Phase Select menu

because the front panel can display only one phase at a time. Refer to the ac source

Programming Guide on how to return simultaneous measurements from all three phases.

Front Panel Operation - 4

2 - Setting the Output Frequency

When you turn on the ac source, the default output frequency is a 60 Hz. Assuming the voltage output

from example 1 is in effect (120 Vrms sinewave), change the frequency to 50 Hz as follows:

Action

Display

You can set the frequency in the same way that you set the voltage:

FREQ 50

On the Function keypad, press Freq. On the Entry keypad, press 5 0 Enter.

On the Function keypad, press Freq. On the Entry keypad, press ¯ or ° to

increment or decrement the existing value.

Rotate the front panel Frequency knob to obtain 50 Hz.

FREQ 50

To verify the output, you can measure it as follows:

120 V 50 Hz

On single-phase ac sources, the φ1 annunciator is lit. On three-phase ac sources, the

phase annunciator of the last selected phase will be lit. The Meter menu is presently

displaying the measured voltage and frequency of the selected output phase.

You can scroll through all of the measurement functions in the Meter Menu by

pressing the and ô keys.

3 - Setting a Protection Feature

You can set the ac source to disable its output if it detects an overvoltage or overcurrent fault condition.

Other automatic fault conditions (such as overtemperature) also will disable the output. Set the

overcurrent protection feature as follows:

Action

Display

PROT:CLEAR

On the Function keypad, press Protect.

Press ° to obtain the overcurrent command.

CURR:PROT OFF

CURR:PROT ON

On the Entry keypad, press once to scroll to the ON parameter and press Enter. The

OCP annunciator will light, indicating that the overcurrent protection circuit is on.

CURR:PROT ON

DELAY .1

If you wish to set a time delay between the detection of the fault and the disabling of

the output, scroll to the delay command on the protection menu. The default delay is

100 milliseconds.

DELAY .250

PROT:CLEAR

Enter the delay from the Entry keypad, such as . 2 5 0 Enter.

When you want to restore normal operation after the cause of the overcurrent

condition has been removed, scroll to the protection clear command and press

Enter. The OCP annunciator then will go off.

4 - Front Panel Operation

4 - Using Transient Voltage Modes

The ac source voltage can be programmed in the following transient operating modes:

STEP

PULSE

causes the output to permanently change to its triggered value.

causes the output to change to its triggered value for a specific time, as determined by the

Pulse menu parameters.

LIST

causes the output to sequence through a number of values, as determined by points entered

in the List menu.

FIXED

disables transient operation for the selected function.

Step Transient

The Voltage Menu lets you specify an alternate or triggered voltage level that the ac source will apply to

the output when it receives a trigger. Because the default transient voltage level is zero volts, you must

first enter a triggered voltage before you can trigger the ac source to change the output amplitude. Refer

to Chapter 4 of the Programming Guide for more information about programming triggers.

In the following example, the voltage output is set to 120 Vrms and then stepped down to 102 Vrms.

Action

Display

0 V 60 Hz

On the Function keypad, press Output On/Off to enable the output. The Dis

annunciator will go off.

VOLT 120

VOLT:T 0

Press Voltage to access the Voltage Menu. On the Entry keypad, press 1 2 0 Enter.

Access the Voltage Menu again and press ô to access the triggered voltage

command.

VOLT:T 102

On the Entry keypad, press 1 0 2 Enter.

Access the Voltage Menu again and press ô to access the voltage mode command. It

should be in the default FIXED mode. An ac source function in the FIXED mode

does not respond to triggers. On the Entry keypad, press ¯ or ° to scroll through

the mode parameters. When you have STEP, press Enter.

VOLT:M STEP

INIT:IMMED

102 V 60 HZ

Press Trigger Control and Enter. This initiates (or enables) one immediate trigger

action.

Press Shift Trigger. This sends the ac source an immediate trigger signal to change

the output voltage. The triggered voltage value now becomes the VOLT value.

On three-phase ac sources the voltage steps are phase selectable. You can output a different voltage

step for each phase. To do this, use Phase Select to first choose the desired phase, as previously

described in example 1 for setting the immediate output voltage.

Front Panel Operation - 4

Pulse Transient

In the following example, the output is four 83.3-millisecond, 120 Vrms pulses at 60 Hz. The figure

shows the trigger, pulse count, pulse period, and duty cycle.

NOTE:

From the Output Menu, execute the *RST command to reset the ac source. This is

necessary because any previously programmed functions remain in effect until cleared.

Trigger

count = 4

120Vrms

102Vrms

83.3ms

250ms

Figure 4-5. Pulse Transients

Action

Display

VOLT 102

VOLT 120

Press Voltage to access the Voltage Menu. On the Entry keypad, press 1 0 2 Enter.

Press ô to access the triggered voltage command. On the Entry keypad, press 1 2 0

Enter.

Access the Voltage Menu again and press ô to access the voltage mode command. On

the Entry keypad, press ¯ or ° to scroll through the mode parameters to obtain

PULSE and press Enter.

VOLT:M PULSE

WIDTH .0833

DCYCLE 33

Press Pulse to access the Pulse Menu. From the Entry keypad, press

. 0 8 3 3 Enter to enter a pulse width of 83.3 milliseconds.

Access the Pulse Menu and press ô to access the duty cycle command. From the Entry

keypad, press 3 3 Enter to change the duty cycle to 33%.

Access the Pulse Menu and press ô to access the pulse count. On the Entry keypad,

press 4 and Enter.

COUNT

INIT:IMMED

102 V 60 HZ

Press Trigger Control and Enter to initiate the transient trigger sequence.

Press Shift Trigger. This sends the ac source an immediate trigger signal to generate

the four output pulses.

Note: The ac source output returns to 102 V at the completion of the output pulses.

On three-phase ac sources the voltage pulses are phase selectable. You can output a different voltage

pulse for each phase. To do this, use Phase Select to first choose the desired phase, as previously

described in example 1 for setting the immediate output voltage.

4 - Front Panel Operation

List Transient

Lists are the most flexible means of generating multiple or synchronized transient outputs. The following

figure shows a voltage output generated from a list. The output shown represents three different ac

voltage pulses (160 volts for 33 milliseconds, 120 volts for 83 milliseconds, and 80 volts for 150

milliseconds) separated by 67-millisecond, 0-volt intervals.

The list specifies the pulses as three voltage points (point 0, 2, and 4), each with its corresponding dwell

point. The intervals are three zero-voltage points (point 1, 3, and 5) of equal intervals. The count

parameter causes the list to execute twice when started by a single trigger.

NOTE:

From the Output Menu, execute the *RST command to reset the ac source. This is

necessary because any previously programmed functions remain in effect until cleared.

Trigger

160 Vrms

List Count = 1

List Count = 2

Figure 4-6. List Transients

Action

Display

VOLT:M

FIXED

Press Voltage to access the Voltage Menu. Then press ô to access the voltage mode

command.

On the Entry keypad, press ¯ or ° to scroll through the mode parameters to obtain LIST

and press Enter.

VOLT:M LIST

COUNT

Access the List Menu by pressing Shift List. The first menu command is the count.

From the Entry keypad, change the list count from the default (1) to 2. Press Enter.

Access the List menu again and press ô until you access the dwell time. This specifies

the "on" time for each voltage point, which is effectively the output pulse width. The first

dwell point (0) appears in the display. On the Entry keypad, press . 0 3 3 and Enter.

DWEL 0 .033

Pressing the Enter key automatically advances to the step in the list. Enter the following

values for dwell list points 1 through 5: .067, .083, .067, .150, .067. Press Enter to

enter each value. When you finish, you will be at point 6, which is the end of the list.

DWEL 1 .067

DWEL 2 .083

DWEL 3 .067

DWEL 4 .150

DWEL 5 .067

DWEL 6 EOL

Note: Press Shift Index or Shift ôIndex to access and edit any list point.

Front Panel Operation - 4

Press ô until you access the voltage list. This specifies the amplitude of each output

point during its corresponding dwell period. The first voltage list point (0) appears in the

display. On the Entry keypad, press 1 6 0 and Enter.

VOLT 0 160

Pressing the Enter key automatically advances to the step in the list. Enter the following

values for voltage list points 1 through 5: 0, 120, 0, 80, 0. Press Enter to enter each

value. When you finish, you will be at point 6, which is the end of the list.

VOLT 1

VOLT 2 120

VOLT 3

VOLT 4

VOLT 5

Note: Press Shift Index or Shift ôIndex to access and edit any list point.

VOLT 6 EOL

Press ô until you access the step command. Check that it is at the default mode (AUTO).

STEP AUTO

This lets a single trigger run your list for the specified count.

0 V 60 Hz

INIT:IMMED

0 V 60 Hz

Press Output On/Off to enable the output. The Dis annunciator will go off.

Press Trigger Control and Enter to initiate the transient trigger sequence.

10.

11.

Press Shift Trigger. This sends the ac source an immediate trigger to generate the four

output pulses. The output returns to the immediate value at the end of the list.

Note: To clear a list, press Clear Entry. This truncates or clears the list at the presently

displayed list point. Each list must be accessed and cleared separately.

On three-phase ac sources the voltage lists are phase selectable. You can output a different voltage list

for each phase. To do this, use Phase Select to first choose the desired phase, as previously described in

example 1 for setting the immediate output voltage.

5 - Trigger Delays and Phase Synchronization

The ac source trigger system also lets you program trigger delays as well as synchronize output changes

to a specific phase angle of the output waveform.

In example j, the output transient is triggered immediately at the receipt of the trigger signal. In example

ô, a delay time of approximately 16.7 milliseconds elapses between the occurrence of the trigger and the

start of the output transient. In example í, the trigger source is programmed for phase synchronization,

which means that the transient occurs at the first occurrence of the specified phase angle after the trigger

signal is received. Example m describes phase synchronization on three phase ac sources.

Note that phase synchronization is referenced to an internal phase signal. The output of the unit is

normally offset by 0° with respect to this internal reference. Because synchronized transient events

always occur with respect to the internal reference, the output will normally be in phase with the value

programmed for phase synchronization. (The Phase command can be used to change the offset of the

output with respect to the internal phase reference.)

4 - Front Panel Operation

Trigger

VOLT T level

VOLT level

VOLT T level

VOLT level

0.000

0.0167

VOLT T level

VOLT level

Figure 4-7. Trigger Delays and Phase Synchronization

Example

Display

VOLT 120

VOLT:T 150

VOLT:M STEP

INIT:IMMED

VOLT 120

This example uses the default trigger parameters. First, access the Voltage

menu and program the immediate and triggered voltage levels, followed by

the voltage transient mode.

Then press Trigger Control and Enter, followed by Shift Trigger.

In this example, you will set a trigger delay. First, access the Voltage menu

and program the immediate and triggered voltage levels, followed by the

voltage transient mode.

VOLT:T

150

VOLT:M STEP

DELAY 0

DELAY .0167

Press Trigger Control. Then press ô until you access the delay parameter.

On the Entry keypad, press . 0 1 6 7 Enter.

INIT:IMMED

Then press Trigger Control and Enter, followed by Shift Trigger.

This example uses the phase sync mode with no delay, but synchronized at 90.

First, access the Voltage menu and program the immediate and triggered

voltage levels, followed by the voltage transient mode.

VOLT 120

VOLT:T 150

VOLT:M STEP

DELAY 0

SYNC:SOUR PHASE

Press Trigger Control. Press ô until you access the delay parameter. If

necessary, set it to 0. Press ô until you access the sync source command. On

the Entry keypad, press ° to obtain PHASE. Press Enter.

SYNC:PHAS 90

INIT:IMMED

Access the Trigger Control menu again and press ô to access the sync phase

reference parameter. On the Entry keypad, program a 90° phase reference by

entering 9 0 Enter.

Then press Trigger Control and Enter, followed by Shift Trigger.

Front Panel Operation - 4

On three-phase ac sources, phase 1 is normally offset by 0° from the internal phase reference while

phase 2 and phase 3 are offset by 240° and 120° respectively. Therefore, synchronized transient events

will occur at the phase angle programmed for the phase 1 output, but at different phase angles on the

phase 2 and phase 3 outputs.

This is illustrated in the following figure, where the transient occurs at the 90° angle programmed for the

phase 1 output, but at 330° and 210° for the phase 2 and 3 outputs, because of the default offsets for

these outputs.

Trigger

VOLT T level

VOLT level

phase = 0

VOLT T level

VOLT level

phase = 240

330

VOLT T level

VOLT level

210

phase = 120

Figure 4-8. Phase Synchronization on Three-phase Sources

Example

Display

VOLT 120

VOLT:T 150

VOLT:M STEP

This example synchronizes a change at 90° on phase 1. First, access the

Voltage menu and program the immediate and triggered voltage levels,

followed by the voltage transient mode. Check that the φ1, φ2, and φ3

annunciators are all lit, indicating that commands will be sent to all three

phases. If not, press Phase Select until all three annunciators are lit.

Press Trigger Control. Press ô until you access the sync source command.

On the Entry keypad, press ° once to obtain PHASE. Press Enter.

SYNC:SOUR PHASE

SYNC:PHAS 90

Access the Trigger Control menu again and press ô to access the sync phase

reference parameter. On the Entry keypad, program a 90° phase reference by

entering 9 0 Enter.

INIT:IMMED

Then press Trigger Control and Enter, followed by Shift Trigger.

4 - Front Panel Operation

6 - Using Slew Rates to Generate Waveforms

As shown in the previous examples there are a number of ways that you can generate custom waveforms.

Programmable slew rates provide additional flexibility when customizing waveforms. The following

figure illustrates how programmable slew rates are applied in the transient operating modes.

In example , an immediate slew rate of 50 volts/second is used whenever a new output voltage is

programmed. In example ô, a triggered slew rate of 50 volts/second steps the voltage level to its new

value. 50 volts/second becomes the new immediate slew rate in step mode. In example í, a triggered

slew rate of 50 volts/second is used at the start of the pulse. The immediate slew rate of infinity applies at

the trailing edge of the pulse. In example ÷, the slew rates are set by the values in the voltage slew list.

New VOLT level

SLEW rate

1 SLEW:MODE FIXED

VOLT:T level

SLEW:T rate

2 SLEW:MODE STEP

SLEW rate

VOLT:T level

SLEW:T rate

width

SLEW:T

3 SLEW:MODE PULSE

rate

SLEW [2]

SLEW rate

VOLT level

SLEW [0]

SLEW [1]

4 SLEW:MODE LIST

SLEW [3]

TRIGGER

APPLIED

LIST

COMPLETE

Figure 4-8. Programming Slew Rates

Front Panel Operation - 4

Example

Display

This example uses the immediate slew rate. First, access the Voltage menu

and press ô until you access the mode command. On the Entry keypad, press

° to obtain FIXED. Press Enter.

VOLT:M FIXED

SLEW 50

Access the voltage menu and press ô until you access the slew command. On

the Entry keypad, press 5 0 Enter to program a slew rate of 50 volts/second.

Whenever a new immediate voltage value is entered, the output will slew to

the new level at 50 volts/second.

Step mode uses the triggered slew rate. First, access the Voltage menu,

program the immediate and triggered voltage levels, and set the slew mode to

STEP.

VOLT 120

VOLT:T

150

SLEW:M STEP

Access the Voltage menu and press ô to access the immediate slew

SLEW: 9.9+E37

command. On the Entry keypad, enter a value that equals infinity.

Access the Voltage menu and press ô until you access the triggered slew

command. On the Entry keypad, enter a value such as 5 0 Enter, which sets

the triggered slew rate to 50 volts/second.

SLEW:T 50

INIT:IMMED

Then press Trigger Control and Enter, followed by Shift Trigger.

After the trigger has been sent, in step mode, the triggered value becomes the

new immediate value.

Pulse mode uses the triggered slew rate at the leading edge of the pulse, and

the immediate slew rate at the trailing edge of the pulse. First, access the

Voltage menu, program the immediate and triggered voltage levels, and set

the slew mode to PULSE.

VOLT 120

VOLT:T

150

SLEW:M PULSE

Access the Pulse menu and program the pulse count, duty cycle, and pulse

period.

COUNT

DCYCLE 33

PER .0166

Access the Voltage menu and press ô to access the immediate slew

SLEW: 9.9+E37

command. On the Entry keypad, enter a value that equals infinity.

Access the Voltage menu and press ô until you access the triggered slew

command. On the Entry keypad, enter a value such as 5 0 Enter, which sets

the triggered slew rate to 50 volts/second.

SLEW:T 50

INIT:IMMED

Then press Trigger Control and Enter, followed by Shift Trigger.

When the voltage slew mode is set to LIST, the slew rates are set by the

values in the voltage slew list. Refer to the List Transient example for more

information on how to program lists. You must program the voltage values

and dwell times as explained in that example. You must also program a slew

rate for each point in the list (even if it is 9.9+E37).

NOTE:

When specifying a dwell time, you must take the slew time into consideration. If the

dwell time at any given list point is less than the slew time at the same point, the voltage

will never reach its programmed level before the next list point becomes active.

4 - Front Panel Operation

7 - Measuring Peak Inrush Current

Peak inrush current is a non-repetitive measurement in the sense that peak inrush current occurs only

when the unit under test is first turned on. In order to repeat the measurement, you must turn the unit off

and wait for any input filter capacitors to discharge completely.

This example shows you how you can measure the peak inrush current using the front panel meter. The

voltage is set to 120 V rms and the output is triggered at an output phase of 75°, which optimizes the

conditions under which inrush current is applied to the unit under test.

Action

Display

VOLT

Set the immediate voltage to 0. Press Voltage, then press 0 and Enter.

Set the triggered voltage to 120 V rms. In the Voltage menu, press ô to

access the triggered voltage command. Then press 1 2 0 Enter.

VOLT:T 120

Set the voltage mode to step. In the Voltage menu, press ô to access the

mode command. Press ° to scroll to STEP and press Enter.

VOLT:M STEP

RANGE 150

Make sure the unit is operating in the low voltage range. (The low voltage

range has twice the output current rating of the high voltage range.) In the

Voltage menu, press ô to access the range command. If necessary, press ° to

set the range to 150 and press Enter.

Make sure the triggered voltage slew rate is set to the fastest possible speed.

In the Voltage menu, access the triggered slew command. If necessary, reset

the slew rate to a faster speed.

SLEW:T 9.9000+E37

Make sure the peak current and rms current limits are set to high values. In the

Current menu, access the rms current limit and then the peak current limit

commands. If necessary, reset the rms current and the peak current limits to

higher values.

CURR:LEV 6.5

CURR:PEAK 40

(Agilent 6811B units have an rms current limit of 3.25 A. Agilent 6813B units

have an rms current limit of 13 A and a peak current limit of 80 A)

Synchronize the trigger source with a reference phase angle. In the Trigger

Control menu, press ô to access the sync source command. Press ° to obtain

PHASE and press Enter.

SYNC:SOUR PHASE

SYNC:PHAS 75

INIT:IMMED

0 A PK NR

Set the reference phase angle to 75°. In the Trigger Control menu, press ô to

access the sync phase command. Then press 7 5 Enter.

Initiate (or enable) the unit for one immediate trigger from the front panel.

Press Trigger Control and Enter.

10. Set the meter function to measure nonrepetitive peak inrush current. In the

Meter menu, press ô to access the peak inrush current display.

11. Enable the output by pressing Output On/Off.

0 V 60 HZ

12.

48 A PK NR

Send the trigger to step the output from 0 V to 120 V. Press Shift Trigger.

The inrush current is displayed on the Meter.

On three-phase ac sources you can only return the peak inrush current from the selected phase because

the front panel can only display one phase at a time. Refer to the ac source Programming Guide on how

to return simultaneous measurements from all three phases.

Front Panel Operation - 4

8 - Setting the GPIB Address and RS-232 Parameters

Your ac source is shipped with the GPIB address set to 5 This address can only be changed from the front

panel using the Address menu located under the Address key. This menu is also used to select the RS-

232 interface and specify RS-232 parameters such baud rate and parity.

Action

Display

To set the GPIB address, proceed as follows:

ADDRESS 5

ADDRESS 7

On the System keypad, press Address.

Enter the new address. For example, Press 7, Enter.

To configure the RS-232 interface, proceed as follows:

ADDRESS 5

On the System keypad, press Address.

Scroll through the Address menu by pressing ô . The interface command

lets you select the RS-232 interface. The baudrate command lets you

select the baudrate. The parity command lets you select the parity.

INTF RS232

BAUDRATE 600

PARITY EVEN

The ¯ and ° keys let you select the command parameters.

9 - Saving and Recalling Operating States

You can save up to 16 states (from location 0 to location 15) in non-volatile memory and recall them

from the front panel. All programmable settings are saved. List data, however, cannot be saved in state

storage. Only one list is saved in non-volatile memory.

Action

Display

To save an operating state in location 1, proceed as follows:

Set the instrument to the operating state that you want to save.

*SAV 1

*RCL 1

Save this state to location 1. Press Shift Save 1 Enter.

To recall a saved state in location 1, proceed as follows:

To select the power-on state of the ac source, proceed as follows:

Recall the state saved in location 1 by pressing Recall 1 Enter

PON:STATE RST

On the Function keypad, press Shift Output, and scroll through the Output

menu until you get to the PON state command.

Use the ¯ and ° keys to select either RST or RCL0. RST sets the power-on

state of the unit as defined by the *RST command. RCL0 sets the power-on

state of the unit to the state saved in *RCL location 0.

To clear the non-volatile memory of the ac source, proceed as follows:

*RST

On the Function keypad, press Shift Output and scroll to the *RST

command. Then press Enter. This returns the unit to the factory-default

settings.

*SAV 1

Save these settings to location 1. Press Shift Save 1 Enter.

Repeat step #2 for memory locations 2 through 16..

*SAV 2

*SAV 3

*SAV 4

...*SAV 16

4 - Front Panel Operation

10 - Switching Between Single- and Three-phase Operation (Agilent 6834B only)

When shipped from the factory, the Agilent 6834B ac source is configured for three-phase operation.

You can configure the Agilent 6834B for single-phase operation. This increases the available output

power for phase 1 from 1.5 kVA to 4.5 kVA.

NOTE:

When you configure the Agilent 6834B for single-phase operation, the phase 2 and phase

3 output terminals are internally connected to the phase 1 output terminal. This

distributes the increased available output power across the three output terminals.

Additionally, switching the Agilent 6834B between single-phase and three-phase operation causes the

following actions:

♦

it disables all outputs

it reconfigures the current readback and programming calibration constants

it returns all lists and *RCL states to their factory default states

it reboots the unit, after which the newly selected number of phases becomes available

NOTE:

This may require you to reprogram the lists and recall states each time the outputs are

switched.

Action

Display

ADDRESS

NOUTPUTS

On the System keypad, press Address.

Press ô to scroll through the address menu until you get to the NOUTPUTS

command.

Use the ¯ and ° keys to select the number of output phases; either 1 (single-phase)

or 3 (three-phase).

NOUTPUTS

Specifications

Performance specifications are warranted over the ambient temperature range of 0 to 40 C. Unless

otherwise noted, specifications are per phase for a sinewave with a resistive load at an output frequency

range of 45 Hz to 5 kHz (45 Hz-1 kHz, Agilent 6843A) after a 30-minute warmup.

Table A-1. Performance Specifications¹

Parameter

Agilent 6814B

Agilent 6834B

Agilent 6843A

Phases:

Maximum Output Ratings

rms Voltage²:

150 V low range;

300 V high range

Power:

3 kVA

1.5 kVA/phase

4.5 kVA

4.8 kVA

rms Current:

20 A low range 10 A low range

10 A high range 5 A high range

80 A low range 40 A low range

40 A high range 20 A high range

30 A low range

32 A low range

15 A high range 16 A high range

120 A low range 96 A low range

60 A high range 48 A high range

Repetitive peak Current:

Crest Factor (current):

Output Frequency Range:

45 Hz−5 kHz

45 Hz−1 kHz

Constant Voltage Ripple and Noise

−60 dB (20 kHz−10 MHz)

0.5%

Load Regulation:

Line Regulation:

0.1%

Maximum Total Harmonic Distortion:

1% (45 Hz−1 kHz);

1% + 1%/kHz (>1 kHz−5 kHz)

Programming Accuracy (@ 25 C ±5 C)

rms Voltage:

0.15% + 0.3 V (45−100 Hz)

0.5% + 0.3 V (>100−500 Hz)

1% + 0.3 V (>500−5 kHz)

0.01% + 10 µHz

Frequency:

Phase: (Agilent 6834B in 3-phase

mode)

N/A

0.1º (45-100 Hz)

1º (>100−1 kHz)

1º + 1%/kHz

(>1k−5 kHz)

Measurement Accuracy (@25 C ±5 C)

rms Voltage

0.05% + 250 mV

0.1% + 50 mA

0.05%+ 250 mV (45 Hz − 1 kHz)

0.05% + 0.1%/kHz + 250 mV (>1 kHz − 5 kHz)

0.1% + 50 mA 0.1% + 25 mA 0.1% + 50 mA

0.01% + 0.01Hz 0.01% + 0.01Hz

rms Current

Frequency:

0.01% + 0.01Hz 0.01% + 0.01Hz

Power (VA):

Power (Watts):

Power Factor:

0.15% + 5 VA

0.15% + 5 W

0.01

0.15% + 3 VA

0.15% + 3 W

0.01

0.15% + 5 VA

0.15% + 5 W

0.01

0.15% + 9 VA

0.15% + 9 W

0.01

¹Specifications subject to change without notice.

²From line to neutral on Agilent 6834B

A - Specifications

Supplemental Characteristics

Table A-2 lists the supplemental characteristics, which are not warranted but are descriptions of typical

performance determined either by design or type testing.

Table A-2. Supplemental Characteristics

Parameter

Agilent 6814B

Agilent 6834B

Agilent 6843A

AC Input Voltage Range:

180−235 Vac (3-phase) or

360−440 Vac (3-phase)

AC Input Frequency:

47−63 Hz

300 Vrms

24 A low range

Output Isolation Voltage:

Maximum Input Current (rms):

18 A low range

10 A high range

5.8 kVA/4.1 kW

0.2% + 80 mA

24 A low range

15 A high range

8.9 kVA/5.9 kW

0.2% + 80 mA

15 A high range

8.9 kVA/5.9 kW

0.2%+40mA (3-phase)

0.2%+80mA (1-phase)

Maximum Input Power:

Average Programming Accuracy:

Average Programming Resolution

rms Voltage:

80 mV

2 V

5 mA

80 mV

2 V

2.5 mA (3-phase)

7.5 mA (1-phase)

10 µHz

80 mV

2 V

7.5 mA

Overvoltage Programming (OVP):

rms Current:

Output Frequency:

Phase (Agilent 6834B in 3-phase mode):

10 µHz

N/A

10 µHz

N/A

0.001° (45Hz−1kHz)

Average Measurement Resolution

rms Voltage:

10 mV

3 mA

10 mV

6 mA

rmsCurrent:

6 mA (3-phase)

2 mA (1-phase)

0−1.07533 x 10⁶s

0−4.30133 x 10⁵s

100 µs

0−4.30133 x 10⁵s

100 µs

List Dwell Time

Triggering Accuracy with Respect to Phase

Synchronization:

250 µs

Trigger In Response Time:

200 µs

400 µs

500 µs

50 µs

200 µs

Minimum Resolution for Dropout:

Output Response Time:

(output change from 10 to 90% or 90 to 10% of its

total excursion with full resistive load)

Remote Inhibit Response Time:

<1 ms

Remote Sense Capability:

Waveform Table Resolution (voltage):

Harmonic Measurement Time (amplitude):

Up to 10 Vrms can be dropped across each load lead.

1024 points

1 harmonic ≤100 ms;

all 50 harmonics ≤2 s

RS-232 Interface Capabilities

Baud Rates:

300, 600, 1200, 2400, 4800, 9600

7 bits even or odd parity; 8 bits without parity

SCPI (Standard Commands for Programmable Instruments),

Elgar 9012 PIP

Data Format:

Language:

Trig In/Trig Out Characteristics

Trig Out (HC TTL output):

= 0.8 max. @ 1.25 mA

= 3.3 V max. @ 1.25 mA

Trig In (10k pullup):

V = 0.8 V max.

= 2 V max.

Specifications A

Table A-2. Supplemental Characteristics (continued)

Parameter

Agilent 6814B

Agilent 6834B

Agilent 6843A

INH/FLT Characteristics

Maximum Ratings:

INH Terminals:

FLT Terminals:

16.5 Vdc between INH terminals; FLT terminals; and from INH

terminals to chassis ground

= 1.25 mA max.

= 0.5 Vmax.

V = 0.8 V max.

= 2 V min.

tw = 100 µs min.

td = 4 ms typical

Saveable Data (nonvolatile)

Instrument States:

User-defined waveforms:

List Data:

16 (0 to 15)

12 (with 1024 data points in each)

1 to 100 points (for each list function)

GPIB Interface Capabilities

Language:

SCPI, Elgar 9012 PIP

Interface:

AH1, C0, DC1, DT1, E2, LE1, PP0, RL1, SH1, SR1, TE6

Programming Time:

Recommended Calibration Interval:

Regulatory Compliance

Listed to:

10 ms

1 year

UL 3111-1

CSA 22.2 No. 1010-1

IEC 1010

Certified to:

Conforms to:

RFI Suppression

Complies with:

CISPR-11, Group 1, Class A

Dimensions

Height (add 12.7 mm or 0.5 in. for feet)

Width:

Depth:

262.6 mm (10.3 in.)

430.8 mm (16.96 in.)

602 mm (23.7 in.)

Net Weight:

Shipping Weight:

79.5 kg (175 lb)

119.1 kg (626 lb)

87.7 kg (193 lb)

127.3 kg (280 lb)

87.7 kg (193 lb)

127.3 kg (280 lb)

Verification and Calibration

Introduction

This appendix includes verification and calibration procedures for the Agilent 6814B/6834B/6843A AC

Power Solutions. Instructions are given for performing the procedures either from the front panel or from

a controller over the GPIB.

The verification procedures do not check all the operating parameters, but verify that the ac source is

performing properly. Performance Tests, which check all the specifications of the ac source, are given in

the applicable ac source Service Manual.

Because the output of the ac source must be enabled during verification or calibration, proceed with

caution, since voltages and currents will be active at the output terminals.

Important

Perform the verification procedures before calibrating your ac source. If the ac source

passes the verification procedures, the unit is operating within its calibration limits and

does not need to be recalibrated.

WARNING LETHAL VOLTAGES. Ac sources can supply 424 V peak at their output. DEATH

on contact may result if the output terminals or circuits connected to the output are

touched when power is applied. These procedures must be performed by a qualified

electronics technician or engineer trained on this equipment.

Equipment Required

The equipment listed in the following table, or the equivalent to this equipment, is required for

verification and calibration.

Table B-1. Equipment Required

Equipment

Digital Voltmeter

Characteristics

Resolution: 10 nV @ 1 V

Recommended Model

Agilent 3458A

Readout: 8.5 digits

Accuracy: >20 ppm

Current Monitor¹

Guildline 7320/0.01

Norma Gerts Instruments

0.01 Ω, ±200 ppm, (Agilent 6814B/6834B)

0.001 Ω, ±200 ppm, (Agilent 6843A)

30:1 ratio, 50 ppm, 45 Hz to 1 kHz

2 − 15 Ω, > 1.5 kW (Agilent 6814B/6834B)

1 − 5 Ω, > 4.8 kW non-inductive (Agilent 6843A)

1 Ω, 100 Watts min. (Agilent 6843A only)

Full GPIB capabilities

Ratio Transformer²

Load Resistors

Impedance Resistor

GPIB Controller

HP Series 200/300 or equivalent

¹The 4- terminal current shunt is used to eliminate output current measurement error caused by voltage drops in the

load leads and connections. Connect the voltmeter directly to these current-monitoring terminals.

²A ratio transformer is required only when verifying output voltage readback to MIL-STD-45662A 4:1 test

equipment ratio requirements.

B - Verification and Calibration

Test Setup

Figure B-1 shows the setup for the tests. Be certain to use load leads of sufficient wire gauge to carry the

full output current (see Chapter 2).

B. CURRENT SETUP

A. VOLTAGE SETUP

RMS

VOLTMETER

RMS

VOLTMETER

LOAD

COM

shunt

LOAD

IMPEDANCE

COM

R _LOAD

Switch is for

convenience,

not required.

AC INPUT 3 phase

CAUTION: Connect only one phase at a time

o line

180-254 VAC line t

360-440 VAC line to li

Figure B-1. Verification & Calibration Test Setup

Performing the Verification Tests

The following procedures assume you understand how to operate the ac source from the front panel as

explained in Chapter 4.

When performing the verification tests from a GPIB controller, you may have to consider the relatively

slow settling times and slew rates of the ac source as compared to computer and system voltmeters. Insert

suitable WAIT statements into the test program to give the ac source time to respond to test commands.

Perform the following tests for operation verification in the order indicated.

Turn-On Checkout

Voltage Programming and Measurement Accuracy

Current Measurement Accuracy

Turn-On Checkout Procedure

Perform the Turn-On Checkout as directed in Chapter 3.

NOTE:

The ac source must pass turn-on selftest before you can proceed with the verification

tests.

Verification and Calibration - B

Voltage Programming and Measurement Accuracy

This test verifies the voltage programming, GPIB measurement, and front panel meter functions. Values

read back over the GPIB should be the same as those displayed on the front panel.

Figure B-1 shows the setup. Measure the ac output voltage directly at the output terminals. If you are

verifying a three-phase source, sart by verifying output phase 1.

Action

Normal Result

Make sure the ac source is turned off. Connect the DVM and ratio

transformer as shown in the test setup in Figure B-1.

Turn on the ac source with no load. In the Output menu, execute the

*RST command to reset the unit to its factory default state.

*RST

Program the output voltage to 150 volts and set the output current

limit to its maximum value.

CV annunciator on.

Output voltage near 0.

Output current near 0.

Enable the output by pressing Output On/Off.

Record voltage readings at the DVM¹and on the front panel display.

Output voltage near 150 V.

Readings within low voltage

limits specified in table B-2.

Program the output voltage to 300 volts.

Record voltage readings at the DVM¹and on the front panel display.

Output voltage near 300 V.

Readings within high voltage

limits specified in table B-2.

If you are verifying a 3-phase source, repeat steps 1 through 7 for

phases 2 and 3. Press Phase Select to select the next phase.

Readings within specified High

range limits (300 V/1 kHz).

¹Multiply the DVM reading by the transformer ratio if a ratio transformer is used.

RMS Current Readback Accuracy

This test verifies the current readback. Use the appropriate current shunt with the accuracy specified in

table B-1. Use wire of sufficient size to carry the maximum rated current of the ac source (see table 2-1).

If you are verifying a 3-phase source, start by verifying phase 1.

Action

Normal Result

Turn off the ac source. Connect the load resistor, current shunt, and

the DVM across the current shunt as shown in Figure B-1. Use the

following load resistor values:

Agilent 6814B = 7.5Ω; Agilent 6834B = 15Ω; Agilent 6843A = 5Ω

Turn on the ac source. In the Output menu, execute the *RST

command to reset the unit to its factory default state.

*RST

Program the output voltage to 100 volts and set the current limit as

follows:

Agilent 6814B = 10 A; Agilent 6834B = 5A; Agilent 6843A = 15A

Then enable the output by pressing Output On/Off.

CC annunciator on. Output current

near 10 A for Agilent 6814B

near 5 A for Agilent 6834B

near 15A for Agilent 6843A

Record the DVM voltage reading and calculate the rms current.

Divide the DVM reading by the current monitor resistor value.

Record the front panel reading.

Difference between the measured

output current and front panel

readings are within specified limits.

If you are verifying a 3-phase source, repeat steps 1 through 4 for

phases 2 and 3. Press Phase Select to select the next phase.

B - Verification and Calibration

Table B-2. Agilent 6814B/6834B/6843A Verification Test Record

Model ________________

Test Description

Report No.____________Date_____________

Minimum

Recorded Results

Maximum

Specification

Voltage Programming and Measurement Accuracy

Low voltage (150 Vrms)

Front Panel Measurement

149.5 V

Vout −300 mV

_______V

_______mV

150.5 V

Vout +300 mV

High voltage (300 Vrms)

Front Panel Measurement

_______V

_______mV

300.7 V

Vout +400 mV

299.30 V

Vout −400 mV

Agilent 6814B Current Measurement Accuracy

Front Panel Measurement (10A)

Front Panel Measurement (5A)

Front Panel Measurement (15A)

_______mA

Iout +60 mA

Iout +30 mA

Iout +65 mA

Iout −60 mA

Agilent 6834B Current Measurement Accuracy

_______mA

Iout −30 mA

Agilent 6843A Current Measurement Accuracy

_______mA

Iout −65 mA

Performing the Calibration Procedure

Table B-1 lists the equipment required for calibration. Figure B-1 shows the test setup.

NOTE:

You do not have to do a complete calibration each time. You may calibrate only the

voltage or current and proceed to "Saving the Calibration Constants." However, before

you calibrate OVP, you must first calibrate the output voltage.

The following parameters may be calibrated:

♦

ac output voltage

realtime voltage (Agilent 6843A only)

overvoltage protection (OVP)

output voltage readback

ac output current

output current measurement (Agilent 6843A only)

output impedance (Agilent 6843A only)

Before calibrating the output impedance on Agilent 6843A units, you must first calibrate the output

voltage and the output current.

NOTE:

The Agilent 6834A ac source must be calibrated in 3-phase output mode or an error will

occur. To put the Agilent 6834B unit in 3-phase output mode, press Address, scroll to

NOUTPUT 3 command, and press Enter.

Verification and Calibration - B

Front Panel Calibration Menu

The Entry keypad is used for calibration functions.

Press this key to access the calibration menu.

Shift

Cal

Display

CAL ON <value>

Command Function

Turns calibration mode on when the correct password

value is entered.

CAL OFF

Turns calibration mode off

CAL:LEV <char>

CAL:DATA <value>

CAL:VOLT:AC

CAL:VOLT:PROT

CAL:CURR:AC

CAL:CURR:MEAS

CAL:IMP

Advance to next step in sequence (P1, P2, P3, or P4).

Input a calibration measurement.

Begin ac voltage calibration sequence

Begin voltage protection calibration

Begin ac current calibration sequence

Begin current measurement calibration sequence

Begin output impedance calibration sequence

Begin realtime voltage calibration

CAL:VOLT:RTIM¹

CAL:SAVE

Saves the calibration constants in non-volatile memory.

Set new calibration password.

CAL:PASS <value>

Notes:

¹Agilent 6843A only

value = a numeric value

char = a character string parameter

Use

and

to scroll through the command list.

to scroll through the parameter list.

Front Panel Calibration

WARNING LETHAL VOLTAGES. Ac sources can supply 425 V peak at their output. DEATH

on contact may result if the output terminals or circuits connected to the output are

touched when power is applied. These procedures must be performed by a qualified

electronics technician or engineer trained on this equipment.

The following procedures assume you understand how to operate front panel keys (see Chapter 4).

Enable Calibration Mode

Action

Display

*RST

Reset the unit by selecting Shift, Output, and pressing Enter.

If you are calibration a 3-phase source, make sure that the default phase 1

(φ1) annunciator is lit. Press Phase Select to select a different phase.

CAL ON 0.0

Press Shift Calibration, scroll to CAL ON, and press Enter.

Enter the calibration password from Entry keypad and press Enter. If the

password is correct the Cal annunciator will come on.

CAL DENIED

If CAL DENIED appears, then an internal switch has been set to prevent the

calibration from being changed. (see the Service Manual.)

OUT OF RANGE

If the password is incorrect, an error occurs. If the active password is lost,

the calibration function can be recovered by setting an internal switch that

defeats password protection. (see the Service Manual.)

B - Verification and Calibration

Calibrating and Entering Voltage Calibration Values

Action

Display

Connect the DVM (ac volts mode) directly to the ac source via the ratio

transformer shown in Figure B-1. Do not connect the load resistor or

current shunt.

CAL:VOLT:AC

CAL:LEV P1

Press Shift Calibration, scroll to CAL VOLT AC, and press Enter.

Press Shift Calibration, scroll to CAL LEV P1, and press Enter to select

the first calibration point.

CAL:DATA 0.00

Press Shift Calibration, scroll to CAL DATA, and use the Entry keypad

to enter the voltage value displayed on the DVM. (Multiply the DVM

readings by the transformer ratio if a ratio transformer is used.)

CAL:LEV P2

Press Shift Calibration, scroll to CAL LEV P1, use ° to scroll to the P2

parameter, and press Enter. This selects the second calibration point.

CAL:DATA 0.00

Press Shift Calibration, scroll to CAL DATA, and use the Entry keypad

to enter the voltage value displayed on the DVM. (Multiply the DVM

readings by the transformer ratio if a ratio transformer is used.)

10.

11.

CAL:LEV P3

Press Shift Calibration, scroll to CAL LEV P1, use ° to scroll to the P3

parameter, and press Enter.

CAL:DATA 0.00

Press Shift Calibration, scroll to CAL DATA, and use the Entry keypad

to enter the voltage value displayed on the DVM. (Multiply the DVM

readings by the transformer ratio if a ratio transformer is used.)

12.

13.

CAL:LEV P4

Press Shift Calibration, scroll to CAL LEV P1, use ° to scroll to the P4

parameter, and press Enter.

CAL:DATA 0.00

Press Shift Calibration, scroll to CAL DATA, and use the Entry keypad

to enter the voltage value displayed on the DVM. (Multiply the DVM

readings by the transformer ratio if a ratio transformer is used.)

The ac source is now holding the new voltage calibration constants in RAM

Calibrating and entering realtime voltage calibration values (Agilent 6843A

only)

14.

15.

16.

CAL:VOLT:RTIM

CAL:LEV P1

Press Shift Calibration, scroll to CAL VOLT RTIM, and press Enter.

Press Shift Calibration, scroll to CAL LEV P1, and press Enter.

CAL:DATA 0.00

Press Shift Calibration, scroll to CAL DATA, and use the Entry keypad

to enter the voltage value displayed on the DVM. (Multiply the DVM

readings by the transformer ratio if a ratio transformer is used.)

Calibrating the OVP trip point

17.

18.

CAL:VOLT:PROT

Press Shift Calibration, scroll to CAL VOLT PROT, and press Enter.

Wait for the ac source to compute the OVP calibration constant. The

display returns to Meter mode when the OVP calculation is complete.

The ac source is now holding the new OVP calibration constants in RAM

19.

If you are calibrating a 3-phase source, press Phase Select to select the

next phase and repeat steps 4 through 13 and 17 and 18 for phases 2 and 3.

The phase annunciators on the front panel indicate which phase is active.

Verification and Calibration - B

Calibrating and Entering Current Calibration Values

Action

Display

20.

Connect the appropriate current shunt and load resistor as shown in figure B-

1. Connect the DVM (ac rms mode) across the current shunt.

If you are calibrating a 3-phase source, make sure that the default phase 1

(φ1) annunciator is lit. Press Phase Select to select a different phase.

21.

22.

23.

CAL:CURR:AC

CAL:LEV P1

Press Shift Calibration, scroll to CAL CURR AC, and press Enter.

Press Shift Calibration, scroll to CAL LEV P1, and press Enter.

CAL:DATA 0.00

Press Shift Calibration and scroll to CAL DATA. Wait for the DVM

reading to stabilize. Read the DVM and calculate the first current value

(DVM ac rms voltage divided by the shunt resistance). Use the Entry keypad

to enter the rms current value.

24.

25.

CAL:LEV P2

Press Shift Calibration, scroll to CAL LEV P1, use ° to scroll to the P2

parameter, and press Enter.

CAL:DATA 0.00

Press Shift Calibration and scroll to CAL DATA. Wait for the DVM

reading to stabilize. Read the DVM and calculate the second current value

(DVM ac rms voltage divided by the shunt resistance). Use the Entry keypad

to enter the rms current value.

26.

If you are calibrating a 3-phase source, press Phase Select to select the

next phase and repeat steps 20 through 25 for phases 2 and 3.

The phase annunciators on the front panel indicate which phase is active.

Calibrating and entering rms current measurement values (Agilent 6843A only)

27.

28.

29.

CAL:CURR:MEAS

CAL:LEV P1

Press Shift Calibration, scroll to CAL CURR MEAS, and press Enter.

Press Shift Calibration, scroll to CAL LEV P1, and press Enter.

CAL:DATA 0.00

Press Shift Calibration and scroll to CAL DATA. Wait for the DVM

reading to stabilize. Read the DVM and calculate the first current value

(DVM ac rms voltage divided by the shunt resistance). Use the Entry keypad

to enter the rms current value.

30.

31.

CAL:LEV P2

Press Shift Calibration, scroll to CAL LEV P1 command, use ° to scroll

to the P2 parameter, and press Enter.

CAL:DATA 0.00

Press Shift Calibration and scroll to the CAL DATA. Wait for the DVM

reading to stabilize. Read the DVM and calculate the second current value

(DVM ac rms voltage divided by the shunt resistance). Use the Entry keypad

to enter the rms current value.

The ac source is now holding the new current calibration constants in RAM

B - Verification and Calibration

Calibrating the Output Impedance (Agilent 6843A only)

NOTE:

The output voltage and output current must be calibrated before the output impedance

can be calibrated.

Action

Display

32.

Connect only the output impedance resistor across the output of the ac source.

Do not connect any other equipment.

33.

34.

CAL:IMP

Press Shift Calibration, scroll to the CAL IMP command, and press Enter.

Wait for the ac source to compute the output impedance calibration constant.

The display returns to Meter mode when the calculation is complete.

The ac source is now holding the new impedance calibration constants in RAM

Saving the Calibration Constants

CAUTION:

Storing calibration constants overwrites the existing ones in non-volatile memory. If you

are not sure you want to permanently store the new constants, omit this step. The ac

source calibration will then remain unchanged.

Action

Display

35.

36.

CAL:SAVE

CAL OFF

Press Shift Calibration, scroll to CAL SAVE, and press Enter.

Press Shift Calibration, select CAL OFF, and press Enter to exit Calibration

mode. *RST and *RCL will also set the calibration state to OFF.

Changing the Calibration Password

The factory default password is 0. You can change the password when the ac source is in calibration

mode (which requires you to enter the existing password). Proceed as follows:

Action

Display

CAL ON 0.0

Begin by pressing Shift Calibration and scrolling to the CAL ON command.

Enter the existing password from Entry keypad and press Enter

Press Shift Calibration and scroll to the CAL PASS command.

CAL:PASS 0

Enter the new password from the keypad. You can use any number with up to

six digits and an optional decimal point. If you want the calibration function to

operate without requiring any password, change the password to 0 (zero).

NOTE:

If you want the calibration function to operate without requiring any password, change

the password to 0 (zero).

Verification and Calibration - B

Calibration Error Messages

Errors that can occur during calibration are shown in the following table.

Table B-3. GPIB Calibration Error Messages

Meaning

Error

401

402

403

404

405

406

CAL switch prevents calibration (This is a hardware disable, see the ac source Service Manual.)

CAL password is incorrect

CAL not enabled

Computed readback cal constants are incorrect

Computed programming cal constants are incorrect

Incorrect sequence of calibration commands

Calibration Over the GPIB

You can calibrate the ac source by using SCPI commands within your controller programming

statements. Be sure you are familiar with calibration from the front panel before you calibrate from a

controller. Each front panel calibration command has a corresponding SCPI command.

The SCPI calibration commands are explained in Chapter 3 of the ac source Programming Guide.

Calibration error messages that can occur during GPIB calibration are shown in table B-3.

Agilent Calibration Program Listing

Figure B-2 lists the calibration program. This program can be run on any controller operating under

Agilent BASIC. The assumed power supply address is 705 and calibration password is 0. If required,

change these parameters in the appropriate statements.

B - Verification and Calibration

! AC Source calibration program

Rev B.00.00

ASSIGN @Ac TO 705

PRINT TABXY(3,3),"This program will calibrate the 6814B/34B/43A AC Power Solutions."

PRINT TABXY(3,5),"Equipment requirements are: Agilent3458A or equivalent DVM"

PRINT TABXY(35,6),"0.01 ohm <200ppm Current Shunt for 6814B/6834B"

PRINT TABXY(35,7),"0.001 ohm <200ppm Current Shunt for 6843A"

PRINT TABXY(35,8),"0 - 5 ohm > 4.8 kW power resistor for 6843A"

100

110

120

130

140

150

160

170

180

190

200

210

220

230

240

250

260

270

280

290

300

310

320

330

340

350

360

370

380

390

400

410

420

430

440

450

460

470

480

490

500

510

520

530

540

550

560

570

580

590

600

610

620

630

640

650

660

670

680

690

PRINT TABXY(35,9),"2 - 15 ohm > 1.5 kW power resistor for 6814B/6834B"

PRINT TABXY(35,10),"1 - 1 ohm > 100 watt impedance resistor for 6843A"

PRINT TABXY(35,11),"30:1 <50ppm Ratio Transformer"

PRINT TABXY(3,13),"Ratio Transformer is required when calibrating to MIL-STD-45662A. If the ratio"

PRINT TABXY(3,14),"transformer is not used, the measurement uncertainty must be recalculated."

PRINT TABXY(3,16),"IF YOU ARE CALIBRATING A 6843B, SELECT THE PHASE TO CALIBRATE USING THE FRONT"

PRINT TABXY(3,17),"PANEL KEYPAD.

*** NOTE: THIS PROGRAM WILL ONLY CALIBRATE 1 PHASE. ***"

PRINT TABXY(3,18),"YOU MUST RUN THIS PROGRAM 3 TIMES TO CALIBRATE ALL PHASES OF A 6843B."

DISP "Press CONT to continue"

PAUSE

CLEAR SCREEN

PRINT TABXY(10,5),"1. Turn the AC Source off"

PRINT TABXY(10,7),"2. Disconnect all loads"

PRINT TABXY(10,9),"3. Connect the 3458A to the rear terminal block"

PRINT TABXY(10,11),"4. Set the 3458A to AC VOLTS"

PRINT TABXY(10,13),"5. Turn on the AC Source"

DISP "Press CONT to begin AC PROGRAMMING and MEASUREMENT calibration"

PAUSE

CLEAR SCREEN

PRINT TABXY(18,5),"CALIBRATING AC POGRAMMING and MEASUREMENT"

PRINT TABXY(20,7),"There are 4 points to be calibrated"

OUTPUT @Ac;"CAL:STATE:ON"

OUTPUT @Ac;"CAL:VOLT:AC"

OUTPUT @Ac;"CAL:LEV P1"

WAIT 10

INPUT "Enter AC rms ( transformer ratio * DVM reading)",Ac_p1

PRINT TABXY(25,9),"Point 1 entered"

OUTPUT @Ac;"CAL:DATA";Ac_p1

OUTPUT @Ac;"CAL:LEV P2"

WAIT 10

INPUT "Enter AC rms ( transformer ratio * DVM reading)",Ac_p2

PRINT TABXY(25,11),"Point 2 entered"

OUTPUT @Ac;"CAL:DATA";Ac_p2

OUTPUT @Ac;"CAL:LEV P3"

WAIT 10

INPUT "Enter AC rms ( transformer ratio * DVM reading)",Ac_p3

PRINT TABXY(25,13),"Point 3 entered"

OUTPUT @Ac;"CAL:DATA";Ac_p3

OUTPUT @Ac;"CAL:LEV P4"

WAIT 10

INPUT "Enter AC rms ( transformer ratio * DVM reading)",Ac_p4

PRINT TABXY(25,15),"Point 4 entered"

OUTPUT @Ac;"CAL:DATA";Ac_p4

WAIT 3

CLEAR SCREEN

! Only include lines 580 - 690 if calibrating Agilent 6843

PRINT TABXY(18,5),"CALIBRATING REALTIME VOLTAGE (Agilent 6834A ONLY)"

PRINT TABXY(20,7),"There is 1 point to be calibrated"

OUTPUT @Ac;"CAL:VOLT:RTIM"

OUTPUT @Ac;"CAL:LEV P1"

WAIT 10

INPUT "Enter realtime rms ( transformer ratio * DVM reading)",Rt_p1

PRINT TABXY(25,9),"Point 1 entered"

OUTPUT @Ac;"CAL:DATA";Rt_p1

WAIT 3

CLEAR SCREEN

Figure B-2. Calibration Program Listing (Sheet 1 of 2)

Verification and Calibration - B

700

710

720

730

740

750

760

770

780

790

800

810

820

830

840

850

860

870

880

890

900

910

920

930

940

950

960

970

980

990

PRINT TABXY(15,10),"CALIBRATING OVERVOLTAGE PROTECTION"

OUTPUT @Ac;"CAL:VOLT:PROT"

PRINT TABXY(30,15),"WAIT"

WAIT 30

OUTPUT @Ac;"CAL:SAVE"

OUTPUT @Ac;"CAL:STATE OFF"

CLEAR SCREEN

PRINT TABXY(15,5),"1. Turn off the AC Source"

PRINT TABXY(15,7),"2. Connect the current shunt and load resistor, see fig.B-1"

PRINT TABXY(15,9),"3. Connect the 3458A across the current shunt"

PRINT TABXY(15,11),"4. Set the 3458A to AC rms VOLTS"

PRINT TABXY(15,13),"5. Turn on the AC Source"

DISP "Press CONT to begin Current Program and Measurement calibration"

PAUSE

CLEAR SCREEN

PRINT TABXY(22,5),"CALIBRATING CURRENT POGRAMMING"

PRINT TABXY(20,7),"There are 2 points to be calibrated"

OUTPUT @Ac;"CAL:STATE ON"

OUTPUT @Ac;"CAL:CURR:AC"

OUTPUT @Ac;"CAL:LEV P1"

WAIT 10

INPUT "Enter AC rms current ( DVM reading divided by shunt resistance )",Ai_p1

PRINT TABXY(25,9),"Point 1 entered"

OUTPUT @Ac;"CAL:DATA";Ai_p1

OUTPUT @Ac;"CAL:LEV P2"

WAIT 10

INPUT "Enter AC rms current ( DVM reading divided by shunt resistance )",Ai_p2

PRINT TABXY(25,11),"Point 2 entered"

OUTPUT @Ac;"CAL:DATA";Ai_p2

1000 WAIT 3

1010 CLEAR SCREEN

1020 !

1030 ! Only include lines 1030 - 1340 if calibrating Agilent 6843

1040 !

1050 PRINT TABXY(22,5),"CALIBRATING CURRENT MEASUREMENT (Agilent 6843A ONLY)"

1060 PRINT TABXY(20,7),"There are 2 points to be calibrated"

1070 OUTPUT @Ac;"CAL:CURR:MEAS"

1080 OUTPUT @Ac;"CAL:LEV P1"

1090 WAIT 10

1100 INPUT "Enter AC rms current ( DVM reading divided by shunt resistance )",Am_p1

1110 PRINT TABXY(25,9),"Point 1 entered"

1120 OUTPUT @Ac;"CAL:DATA";Am_p1

1130 OUTPUT @Ac;"CAL:LEV P2"

1140 WAIT 10

1150 INPUT "Enter AC rms current ( DVM reading divided by shunt resistance )",Am_p2

1160 PRINT TABXY(25,11),"Point 2 entered"

1170 OUTPUT @Ac;"CAL:DATA";Am_p2

1180 WAIT 3

1190 CLEAR SCREEN

1200 OUTPUT @Ac;"CAL:SAVE"

1210 OUTPUT @Ac;"CAL:STATE OFF"

1220 PRINT TABXY(15,5),"1. Turn off the AC Source"

1230 PRINT TABXY(15,7),"2. Disconnect all equipment from the AC Source"

1240 PRINT TABXY(15,9),"3. Connect the 1 ohm impedance resistor, see fig.B-1"

1250 PRINT TABXY(15,11),"4. Turn on the AC Source"

1260 !

1270 DISP "Press CONT to begin Output Impedance calibration"

1280 PAUSE

1290 PRINT TABXY(15,10),"CALIBRATING OUTPUT IMPEDANCE (Agilent 6843A ONLY)"

1300 OUTPUT @Ac;"CAL:STATE ON"

1310 OUTPUT @Ac;"CAL:IMP"

1320 PRINT TABXY(30,15),"WAIT"

1330 WAIT 30

1340 !

1350 OUTPUT @Ac;"CAL:SAVE"

1360 OUTPUT @Ac;"CAL:STATE OFF"

1370 CLEAR SCREEN

1380 PRINT TABXY(25,10),"CALIBRATION COMPLETE"

1390 END

Figure B-2. Calibration Program Listing (Sheet 2 of 2)

Error Messages

Error Number List

This appendix gives the error numbers and descriptions that are returned by the ac source. Error numbers

are returned in two ways:

♦

Error numbers are displayed on the front panel

Error numbers and messages are read back with the SYSTem:ERRor? query. SYSTem:ERRor?

returns the error number into a variable and returns two parameters: an NR1 and a string.

The following table lists the errors that are associated with SCPI syntax errors and interface problems. It

also lists the device dependent errors. Information inside the brackets is not part of the standard error

message, but is included for clarification. When errors occur, the Standard Event Status register records

them in bit 2, 3, 4, or 5:

Table C-1. Error Numbers

Error Number Error String [Description/Explanation/Examples]

Command Errors –100 through –199 (sets Standard Event Status Register bit #5)

–100 Command error [generic]

–101 Invalid character

–102 Syntax error [unrecognized command or data type]

–103 Invalid separator

–104 Data type error [e.g., "numeric or string expected, got block data"]

–105 GET not allowed

–108 Parameter not allowed [too many parameters]

–109 Missing parameter [too few parameters]

–112 Program mnemonic too long [maximum 12 characters]

–113 Undefined header [operation not allowed for this device]

–121 Invalid character in number [includes "9" in octal data, etc.]

–123 Numeric overflow [exponent too large; exponent magnitude >32 k]

–124 Too many digits [number too long; more than 255 digits received]

–128 Numeric data not allowed

–131 Invalid suffix [unrecognized units, or units not appropriate]

–138 Suffix not allowed

–141 Invalid character data [bad character, or unrecognized]

–144 Character data too long

–148 Character data not allowed

–150 String data error

–151 Invalid string data [e.g., END received before close quote]

–158 String data not allowed

–160 Block data error

–161 Invalid block data [e.g., END received before length satisfied]

–168 Block data not allowed

–170 Expression error

C - Error Messages

–171 Invalid expression

–178 Expression data not allowed

Execution Errors –200 through –299 (sets Standard Event Status Register bit #4)

–200 Execution error [generic]

–221 Settings conflict [check current device state]

–222 Data out of range [e.g., too large for this device]

–223 Too much data [out of memory; block, string, or expression too long]

–224 Illegal parameter value [device-specific]

–225 Out of memory

–270 Macro error

–272 Macro execution error

–273 Illegal macro label

–276 Macro recursion error

–277 Macro redefinition not allowed

System Errors –300 through –399 (sets Standard Event Status Register bit #3)

–310 System error [generic]

–350 Too many errors [errors beyond 9 lost due to queue overflow]

Query Errors –400 through –499 (sets Standard Event Status Register bit #2)

–400 Query error [generic]

–410 Query INTERRUPTED [query followed by DAB or GET before response complete]

–420 Query UNTERMINATED [addressed to talk, incomplete programming message received]

–430 Query DEADLOCKED [too many queries in command string]

–440 Query UNTERMINATED [after indefinite response]

Selftest Errors 0 through 99 (sets Standard Event Status Register bit #3)

No error

Non-volatile RAM RD0 section checksum failed

Non-volatile RAM CONFIG section checksum failed

Non-volatile RAM CAL section checksum failed

Non-volatile RAM WAVEFORM section checksum failed

Non-volatile RAM STATE section checksum failed

Non-volatile RAM LIST section checksum failed

Non-volatile RAM RST section checksum failed

10 RAM selftest

11 - 31 DAC selftest error, expected <n>, read <reading>

Errors 11, 12, 13, 14, 15 apply to DAC12 1A and 1B

Errors 16, 17, 18 apply to DAC12 2A

Errors 19, 20, 21 apply to DAC12 2B

Errors 22, 23 apply to DAC12 4A

Errors 24, 25 apply to DAC12 4B

Errors 26, 27, 28 apply to DAC12 3A and 3B

Errors 29, 30, 31 apply to DAC12 5A and 5B

40 Voltage selftest error, output 1

Error Messages - C

41 Voltage selftest error, output 2

42 Voltage selftest error, output 3

43 Current selftest error, output 1

44 Current selftest error, output 2

45 Current selftest error, output 3

70 Fan voltage failure

80 Digital I/O selftest error

Device-Dependent Errors 100 through 32767 (sets Standard Event Status Register bit #3)

200 Outgrd not responding

201 Front panel not responding

210 Ingrd receiver framing error

211 Ingrd uart overrun status

212 Ingrd received bad token

213 Ingrd receiver buffer overrun

214 Ingrd input buffer overrun

215 Outgrd output buffer overrun

216 RS-232 receiver framing error

217 RS-232 receiver parity error

218 RS-232 receiver overrun error

219 Ingrd inbuf count sync error

220 Front panel uart overrun

221 Front panel uart framing

222 Front panel uart parity

223 Front panel buffer overrun

224 Front panel timeout

401 CAL switch prevents calibration

402 CAL password is incorrect

403 CAL not enabled

404 Computed readback cal constants are incorrect

405 Computed programming cal constants are incorrect

406 Incorrect sequence of calibration commands

600 Systems in mode:list have different list lengths

601 Requested voltage and waveform exceeds peak voltage capability

602 Requested voltage and waveform exceeds transformer volt-second rating

603 Command only applies to RS-232 interface

604 Trigger received before requested number of pre-trigger readings

605 Requested RMS current too high for voltage range

606 Waveform data not defined

607 VOLT, VOLT:SLEW, and FUNC:SHAP modes incompatible

608 Measurement overrange

609 Output buffer overrun

610 Command cannot be given with present SYST:CONF setting

Index

—A—

accessories, 10

airflow, 16

annunciators

φ1, 32

error numbers, 71

—F—

Addr, 32

Cal, 32

CC, 32

CV, 32

Dis, 32

Err, 32

OCP, 32

Prot, 32

features, 11

Fixed, 44

FLT connections, 21

frequency control, 12

front panel, 31

annuncuiators, 32

controls and indicators, 12, 31

keys, 32

function keys, 34

Rmt, 32

Shift, 32

SRQ, 32

Tran, 32

Unr, 32

, 34, 35

Index, 34

immediate action, 34

Output On/Off, 34

Phase Select, 34

Trigger, 34

AWG ratings, 19

fuses, 17

—C—

cables, 10

calibration, 62

enable, 63

—G—

general information, 9

ground, earth, 10

equipment, 59

error messages, 67

menu, 63

output impedance, 66

password, 66

program listing, 67

rms current, 65

saving, 66

guide, programming, 9

guide, user’s, 9

—H—

hazardous voltages, 59

history, 6

setup, 60

HP-IB, 53

voltage offset, 64

capabilities, 11

cleaning, 15

address, 53

connections, 22

—I—

—D—

INH connections, 21

input

damage, 15

digital connections, 21

digital connector, 15

dimensions, 16

connections, 17

power, 10

inspection, 15

—E—

—L—

entry keys, 40

, 40

lethal voltages, 59

line fuse

replacing, 29

List, 44, 46

load voltage drops, 19

location, 16

0 ... 9, 40

Clear Entry, 40

E, 40

Enter, 40

error messages, 29

Index

RS-232, 53

connections

interface commands, 23

—M—

manuals, 9, 15

Meter AC+DC, 32

meter display keys

Harmonic, 35

Input, 35

data format, 23

handshake, 24

pinouts, 23

Meter, 35

—S—

safety class, 10

safety summary, 3

safety warning, 10

saving operating states, 53

self-test, 25

selftest errors, 29

sense connections, 20

service guide, 10

shift annunciator, 26

shift key, 26

—N—

—O—

non-volatile memory

clearing, 53

storing, 33

operating features, 11

options, 10

output

Slew rates

programming, 50

specifications, 55

Step, 44

supplemental characteristics, 56

SYSTem

characteristic, 12

connections, 19

connector, 15

rating, 12

setting output protection, 43

setting the amplitude, 41, 54

setting the frequency, 43

Output AC+DC, 32

output checkout, 26

output control keys

Current, 36

Freq, 36

Voltage, 36

OVLD, 29

LOCal, 23

REMote, 23

RWLock, 23

system errors, 71

system keys, 33

Address, 33

Error, 33

Interface, 33

Local, 33

RCL, 33

Save, 33

Shift, 33

—P—

Peak Inrush current

measuring, 52

Phase synchronization, 47

power cord, 15

installation, 17

power receptacle, 10

preliminary checkout, 25

print date, 6

—T—

transient voltage

fixed, 44

list, 44, 46

pulse, 45

step, 44

transient voltage mode, 44

trigger connections, 21

Trigger delays, 47

trigger IN, 21

program listing

calibration, 67

protection/status keys

Protect, 38

trigger OUT, 21

trigger/list keys

List, 39

Status, 38

Pulse, 45

Trigger Control, 39

turn-on checkout, 25, 60

—R—

rack mount kit, 10

rack mounting, 16

—V—

recalling operating states, 53

remote programming, 12

remote sensing, 20

OVP considerations, 21

repacking, 15

verification, 26

ac measurement accuracy, 61

ac voltage programming, 61

equipment, 59

Index

rms current accuracy, 61

setup, 60

test record, 62

verification tests, 25

voltage control, 12

—W—

warranty, 2

Waveform

generation, 50

wire

current ratings, 19

wiring considerations, 19

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

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

representative.

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Technical data is subject to change.

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.

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