Keysight Technologies AC6801B, AC6804B, AC6802B, AC6803B Operating And Service Manual

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Operating and Service Guide

Keysight AC6800B

Basic

AC Sources

Series

Notices 4

Copyright Notice 4 Manual Part Number 4 Edition 4 Published by 4 Warranty 4 Technology Licenses 4 U.S. Government Rights 5

Safety and Regulatory Information 6

General Information 6 Safety Warnings 6 Product Grounding 6 General Warnings 7 Environmental Warnings 7 Shock Hazard 8 Installation Warnings 9 Heavy Weight 9 Equipment Cautions 10 General Cautions 10 Installation Cautions 10 Operational Cautions 10 Moving Cautions 10 Safety Symbols 11

1Getting Started 13

Before Installation or Use 14 Introduction to the Instrument 19 Instrument Ratings 23 Installing an Optional Interface Board 24 Rack Mounting 25 Connecting the Power Cord 28 Switchboard and Circuit Breaker Requirements 32 Quick Start 35 Interface Connections 39 Remote Interface Configuration 41 Making Output Power Connections 51 Voltage Ranges and Limits 57 Error Checking and Soft Limits 59

2User Information 63

Welcome 64 Front Panel Menu Reference 66 General Front-Panel Organization 68 Selecting the Output Voltage Programming Source and Output Mode 71 Specifying Output Coupling 72 Programming AC Output 73 Programming DC Voltage 78 Setting Limit Values 79

2 Keysight AC6800B Series Operatingand Service Guide

Turning the Output On and Off 81 Storing and Retrieving Instrument States 82 Configuring Instrument Preferences 84 Calibrating from the Front Panel 86 Configuring Overcurrent Protection 87 Configuring Watchdog Protection 88 Configuring and Clearing Measurements 89 Using External Analog Control 90 Viewing Error Messages 94

3SCPI Programming Reference 95

Introduction to SCPI 96 Status Overview 101 Command Quick Reference 106 ABORt Subsystem 115 CALibrate Subsystem 116 CURRent Subsytem 121 DISPlay Subsystem 123 FETCh and MEASure Subsystems 125 FREQuency Subsystem 130 HCOPy Subsystem 132 IEEE-488 Common Commands 133 INITiate Subsystem 139 LXISubsystem 140 OUTPut Subsystem 141 SENSe Subsytem 144 [SOURce:] Subsystem 145 STATus Subsystem 146 SYSTem Subsystem 151 TRIGger Subsystem 156 VOLTage Subsystem 159 Default Settings 165 SCPI Error Messages 166

4Calibration, Verification, and Service 169

Calibration Overview 170 Calibration Procedure 171 Performance Verification 177 Performance Test Records 185 Service 189

License Files 197

Keysight AC6800B Series Operating and Service Guide 3

Notices

Copyright Notice

Manual Part Number

AC6800-90901

Edition

Edition 1, December 2017

Published by

Keysight Technologies, Inc. 550 Clark Drive, Suite 101 Budd Lake, New Jersey 07828 USA

Warranty

THE MATERIAL CONTAINED IN THIS DOCUMENT IS PROVIDED "AS IS," AND IS SUBJECT TO BEING CHANGED, WITHOUT NOTICE, IN FUTURE EDITIONS. FURTHER, TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, KEYSIGHT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED WITH REGARD TO THIS MANUAL AND ANY INFORMATION CONTAINED HEREIN, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. KEYSIGHT SHALL NOT BE LIABLE FOR ERRORS OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH THE FURNISHING, USE, OR PERFORMANCE OF THIS DOCUMENT OR ANY INFORMATION CONTAINED HEREIN. SHOULD KEYSIGHT AND THE USER HAVE A SEPARATE WRITTEN AGREEMENT WITH WARRANTY TERMS COVERING THE MATERIAL IN THIS DOCUMENT THAT CONFLICT WITH THESE TERMS, THE WARRANTY TERMS IN THE SEPARATE AGREEMENT WILL CONTROL.

Technology Licenses

The hardware and/or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license.

4 Keysight AC6800B Series Operating and Service Guide

Notices

U.S. Government Rights

The Software is “commercial computer software,” as defined by Federal Acquisition Regulation (“FAR”) 2.101. Pursuant to FAR 12.212 and 27.405-3 and Department of Defense FAR Supplement (“DFARS”) 227.7202, the U.S. government acquires commercial computer software under the same terms by which the software is customarily provided to the public. Accordingly, Keysight provides the Software to U.S. government customers under its standard commercial license, which is embodied in its End User License Agreement (EULA), a copy of which can be found at

http://www.keysight.com/find/sweula. The license set forth in the EULA represents the exclusive

authority by which the U.S. government may use, modify, distribute, or disclose the Software. The EULA and the license set forth therein, does not require or permit, among other things, that Keysight: (1) Furnish technical information related to commercial computer software or commercial computer software documentation that is not customarily provided to the public; or (2) Relinquish to, or otherwise provide, the government rights in excess of these rights customarily provided to the public to use, modify, reproduce, release, perform, display, or disclose commercial computer software or commercial computer software documentation. No additional government requirements beyond those set forth in the EULA shall apply, except to the extent that those terms, rights, or licenses are explicitly required from all providers of commercial computer software pursuant to the FAR and the DFARS and are set forth specifically in writing elsewhere in the EULA. Keysight shall be under no obligation to update, revise or otherwise modify the Software. With respect to any technical data as defined by FAR 2.101, pursuant to FAR 12.211 and 27.404.2 and DFARS 227.7102, the U.S. government acquires no greater than Limited Rights as defined in FAR 27.401 or DFAR 227.7103-5 (c), as applicable in any technical data.

Keysight AC6800B Series Operating and Service Guide 5

Safety and Regulatory Information

This procedure requires the user to send SCPI commands to the instrument. Connect to the instrument via LAN or USB. Use the Keysight IO Libraries to send SCPI commands.

General Information

The equipment is for industrial use.

Equipment operators are subject to all applicable safety regulations. Along with the warning and safety notices in this manual, all relevant safety, accident prevention, and environmental regulations must also be followed. In particular, the operators of the equipment:

l Must be informed of the relevant safety requirements. l Must have read and understood the operating manual before using the equipment. l Must use the designated and recommended safety equipment.

The following general safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions or with specificwarnings or instructions elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Keysight Technologies assumes no liability of the customer’s failure to comply with the requirements.

Safety Warnings

A WARNING notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly performed or adhered to, could result in personal injury or death. Do not proceed beyond a WARNINGnotice until the indicated conditions are fully understood and met.

Should network communication issues occur, the instrument settings shown in the Browser Web Control page may not represent the actual state of the instrument. This may result in unexpected hazardous voltages on the output and sense connections that could result in personal injury, death, or damage to a device under test. Before touching the output or sense connections or connecting to a device under test, always verify the state of the instrument.

Product Grounding

The instrument is a Class 1 product and is provided with a grounding-type power cord set. The instrument chassis and cover are connected to the instrument electrical ground to minimize shock hazard. The groundpin of the cordset plug must be firmly connected to the electrical ground (safety ground)terminal at the power outlet. Any interruption of the protective earth (grounding)conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury or death.

6 Keysight AC6800B Series Operating and Service Guide

Safety and Regulatory Information

General Warnings

Do not use this product in any manner not specified by the manufacturer. The protective features of this product may be impaired ifit is used in a manner not specified in the operation instructions.

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

The instrument contains an internal fuse, which is not user accessible.

DO NOT REMOVE COVERS. NO OPERATOR SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

SECURELY TURN OFF THE CIRCUIT BREAKER ON THE SWITCHBOARD BEFORE HANDLING THE POWER CORDS. TO AVOID ANELECTRIC SHOCK, THE PROTECTIVE CONDUCTOR TERMINAL MUST BE CONNECTED TO AN ELECTRICAL GROUND.

NE PAS RETIRER LES COUVERTURE DE LA BOITE. AUCUN OPÉRATEUR SERVICEABLE PIÈCES À L'INTÉRIEUR. CONFIER L'ENTRETIEN DE PERSONNELQUALIFIÉ.

CORRECTEMENT COUPER LEDISJONCTEUR ARMOIREAVANT DE MANIPULER LES CORDONS D'ALIMENTATION. POUR ÉVITER TOUT CHOC ÉLECTRIQUE, LE CONDUCTEUR DEPROTECTION BORNE DOIT ÊTRE RELIÉE À UNE MASSE ÉLECTRIQUE.

Environmental Warnings

This product is designed for safe indoor use. Use indoors only.

Do not operate the instrument near flammable gases or fumes.

To prevent the possibility of explosion or fire, do not use the product near alcohol, thinner or other combustible materials, or in an atmosphere containing such vapors.

Do not install the product near a heater, in direct sunlight, or in areas subject to drastic temperature changes. The operating temperature range is 0 to 40 °C (32 to 104 °F), and the storage temperature range is -10 to 60 °C (14 to 140 °F).

Do not install the product in high-humidity locations, such as near a boiler, humidifier, or water supply. The operating humidity range is 20% to 80% relative humidity (no condensation), and the storage humidity range is 90% relative humidity or less (no condensation). Condensation may occur even within the operating humidity range. In such cases, do not use the instrument until the condensation dries up completely.

Do not install the product in a corrosive atmosphere or in environments containing sulfuric acid mist, etc. This may cause corrosion of various conductors and bad contacts of connectors inside the instrument leading to malfunction and failure, or in the worst case, a fire.

Do not install the product in a dusty location. Accumulation of dust can lead to electric shock or fire.

Keysight AC6800B Series Operating and Service Guide 7

Safety and Regulatory Information

Shock Hazard

Before making any load or sense connections be sure to turn the POWER switch off and remove the power plug from an outlet or turn off the circuit breaker of switchboard.

When the power switch is turned offwhile the output is on, residual voltage still remains at the output terminals.

Do not touch the output terminal block for at least 20 seconds after the power switch is tuned off.

When installing the switch between the OUTPUT terminal block and the load, be sure to turn the POWER switch offand remove the power plug from an outlet or turn off the circuit breaker ofthe switchboard.

Be sure to turn the switch off before connecting the load to the terminal at the load end of the switch.

Do not touch the switch terminal or the output terminal when the output is on.

Do not remove the instrument covers. There are no customer-serviceable parts inside. Some circuits are active and have power briefly after the power switch is turned off.

To prevent electric shock, unplug the unit before cleaning.

For protection from electrical shock, the power cordground must not be defeated. If only a two-contact electrical outlet is available, connect the instrument’s chassis ground screw (see above) to a good earth ground.

This product is an IEC Safety Class I equipment (equipment with a protective conductor terminal). Be sure to ground (earth) the unit.

Connect the protective conductor terminal to earth ground.

In DC mode, L is at positive potential and Nis at negative potential when setting the positive value. The opposite is true when setting the negative value.

Do not use the terminal block with the terminal cover removed.

Turn off the switchboard circuit breaker before connectingthe cord.

This product includes protective earth terminals. To minimize shock hazard, 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.

If a capacitor, battery, or similar device is connected as a load in DC mode, voltage remains at the section connected to the output terminal block even when the output is off until the load energy is discharged. The discharge time of the internal capacitor when no load is connected is approximately 0.1 seconds. To prevent the possibility of electric shock, do not touch the output terminal block.

8 Keysight AC6800B Series Operating and Service Guide

Safety and Regulatory Information

Installation Warnings

Have a qualified engineer connect the power cord to the switchboard.

Protective circuits inside the instrument, including input fuses, are connected to match the input terminal polarity. Make sure the colors of the wires connected to the input terminals (L,N,andGND) are correct.

Verify that all safety precautions are taken. Make all connections to the unit before applying power. Note the instrument's external markings described under "Safety Symbols."

You cannot use standard rack mounting support rails, as they would block the airflow needed for cooling.

Heavy Weight

Danger to hands and feet. To avoid personal injury and damage to the instrument, always use a sturdy cart or other suitable device to move the instrument. Do not lift the instrument alone; always use two people to lift the instrument.

Keysight AC6800B Series Operating and Service Guide 9

Safety and Regulatory Information

Equipment Cautions

A CAUTION notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly performed or adhered to, could result in damage to the product or loss of important data. Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met.

General Cautions

Do not place objects on the instrument. Placing objects, especially heavy objects, on top of the product can cause failures.

Installation Cautions

Do not block the air intake at the front of the instrument or the exhaust at the rear.

Large voltage distortion on the AC power line can lead to malfunction. Do not connect the instrument to a generator or a similar device.

Do not use the product in a location where strong magnetic or electric fields are nearby or a location where large amounts of distortion or noise are present on the input power supply waveform. The product may malfunction.

Do not install the product on an inclined surface or location subject to vibrations. The product may fall or tip over, causing damage or injuries or both.

Operational Cautions

You cannot set the voltage limit when the instrument is being controlled by external analog signals. An excessive external voltage may damage the load.

When the output is turned on, several volts of undershoot or overshoot may appear for a time period on the order of ten microseconds.

Moving Cautions

Be sure to include this manual when transporting the instrument.

Turn off the power switch before moving the instrument. Moving the product while the power is turned on can cause electric shock or instrument damage.

Remove all wiring before moving the instrument. Moving the product with the cables connected can cause wires to break or injuries due to the product falling over.

When transporting the product, be sure to use the original packingmaterials. Damage may result from vibrations or from the product falling during transportation.

10 Keysight AC6800B Series Operating and Service Guide

Safety Symbols

Direct current

Alternating current

Frame or chassis terminal

Standby supply. Unit is not completely disconnected fromAC mains when switch is off.

Caution, risk of electricshock

Caution, refer to accompanying documents

Earth ground terminal

Safety and Regulatory Information

ISM1-A

ICES/NMB-001

ICES/NMB001

The CE mark is a registered trademark of the European Community. The text indicates that the instrument is an Industrial Scientific and Medical Group 1 Class A product (CISPR 11, Clause 4).

The TUV mark is a registered trademark of the European community.

This mark indicates product compliance with the Canadian Interference- Causing Equipment Standard.

The C-tick mark is a registered trademark of the Spectrum Management Agency of Australia. This signifies compliance with the Australian EMC Framework regulations under the terms of the Radio Communications Act of 1992.

South Korean Class A EMC Declaration This equipment is Class A suitable for professional use and is for use in electromagnetic environments outside of the home.

Contains one or more of the 6 hazardous substances above the maximum concentration value (MCV), 40 Year EPUP.

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

Keysight AC6800B Series Operating and Service Guide 11

Safety and Regulatory Information

Waste Electrical and Electronic Equipment (WEEE)

This product complies with the WEEE Directive) marketing requirement. The affixed product label (see below) indicates that you must not discard this electrical/electronic product in domestic household waste.

Product Category: With reference to the equipment types in the WEEE directive Annex 1, this product is classified as “Monitoring and Control instrumentation” product. Do not dispose in domestic household waste.

To return unwanted products, contact your local Keysight office, or see

about.keysight.com/en/companyinfo/environment/takeback.shtml for more information.

South Korea Class A EMC declaration

Information to the user:

This equipment has been conformity assessed for use in business environments. In a residential environment this equipment may cause radio interference.

This EMC statement applies to the equipment only for use in business environment.

12 Keysight AC6800B Series Operating and Service Guide

Keysight AC6800B Series Operating and Service Guide

1 Getting Started

Before Installation or Use

Introduction to the Instrument

Instrument Ratings

Installing an Optional Interface Board

Rack Mounting

Connecting the Power Cord

Switchboard and Circuit Breaker Requirements

Quick Start

Interface Connections

Remote Interface Configuration

Making Output Power Connections

Voltage Ranges and Limits

Error Checking and Soft Limits

1Getting Started

Before Installation or Use

Inspect the Unit

When you receive your instrument, inspect it for obvious shipping damage. If there is damage, notify the shipping carrier and nearest Keysight Sales and Support Office immediately. Refer to

www.keysight.com/find/assist. Save all packingand shipping materials in case the unit must be

returned or moved.

Check for Items Supplied

Verify that you received the following items.

AC6800B Series AC Source

Line cord (AC6801B only)

AC input cover (AC6803B and AC6804B only)

Ferrite core and cable tie (two supplied with AC6803B)

CD -IO Libraries Media Suite

Safety Information booklet

Certificate Of Calibration and envelope

Refer to the boxcontents list for any additional items that may be included with your shipment. If anything is missing, please contact your nearest Keysight Sales and Support Office.

Review Safety Information

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 an earth ground. Refer to the Safety Notices for general safety information. Before installation or operation, check the instrument and review this guide for safety warnings and instructions. Safety warnings for specific procedures are located at appropriate places throughout this guide.

14 Keysight AC6800B Series Operating and Service Guide

1Getting Started

Observe Environmental Conditions

Do not operate the instrument near flammable gases or fumes.

The AC6800B Series instruments are Overvoltage Category II instruments that should only be operated in a controlled, indoor environment subject to the following restrictions:

Operating: 0 to 40 °C (32 to 104 °F), 20% to 80% relative humidity, noncondensing

Storage: –10 to 60 °C (14 to 140 °F), 90% or less relative humidity, noncondensing

Altitude: Up to 2000 m

Provide Adequate Air Flow

Do not block the air intake at the front of the instrument or the exhaust at the rear.

The dimensions of each model are shown below. Fans cool the instrument by drawing air through the front and exhausting it out the back. Allow at least 8 inches (20 cm) of space at the front and back of the unit for air circulation.

All dimensions are in mm.

AC6801B

Keysight AC6800B Series Operating and Service Guide 15

1Getting Started

AC6802B

16 Keysight AC6800B Series Operating and Service Guide

AC6803B

1Getting Started

Keysight AC6800B Series Operating and Service Guide 17

1Getting Started

AC6804B

18 Keysight AC6800B Series Operating and Service Guide

Introduction to the Instrument

Front Panel at a Glance

Front Panel Display at a Glance

Rear Panel at a Glance

Instrument Ratings

Front Panel at a Glance

1Getting Started

The following table lists the main parts of the front panel, from left to right:

The [Power] switch turns the unit on or off. The indicator next to this switch shows the display status. Green indicates normal operation. Yellow indicates that the display is in screen saver mode or that the instrument is in the boot-up process. Press any key to exit screen saver mode.

The status LEDs light to indicate when a protection event has occurred and when the output is on.

The display allows you to configure and monitor the instrument.

Keysight AC6800B Series Operating and Service Guide 19

1Getting Started

[Meter] returns the display to metering mode. Pressing it repeatedly cycles the display through all three formats (METER_VI, METER_VIP, and METER_ALL). [Menu] opens the top level of the command menu. Pressing it a second time returns to the metering mode display. [Protect] brings the user to the Protect menu. This is equivalent to [Menu]>Protect. [Back] backs out of a menu without activating any changes. [Help] describes the displayed menu control. [Error] displays messages in the error queue.

The [Error] and [Help] keys provide access to text that is accessed via a vertically scrolling text box. Use the up and down arrow keys to scroll through multiline text, one screen at a time.

To retrieve error messages remotely, send the SYSTem:ERRor? query. The SCPI Status Byte and Standard Event Registers provide an overview of error conditions.

The puqt arrows move around the command menus and select characters in alphanumeric entry fields. The [Select] key makes a selection in a menu and enters the edit mode for numeric parameters.

[On/Off] enables or disables the output. [Voltage] specifies the voltage settings. [Freq] specifies the frequency settings.

[0] through [9] enter numbers. [.] enters the decimal point. [–] toggles between positive and negative numbers. [!] and [#] increment or decrement voltage or frequency settings and select letters in alphanumeric entry fields. [E] enters the letter E to allow you to enter an exponent to the right of it. [-] backspaces to delete characters. [Enter] enters a value. If you exit a field without pressing [Enter], the value is ignored.

20 Keysight AC6800B Series Operating and Service Guide

Front Panel Display at a Glance

Metering field Shows the measured output.

Status field Displays the instrument status:

OFF = the output is off. CV = the output is in constant voltage mode. OC = the output is disabled by the overcurrent protection. OT = the overtemperature protection has tripped. OP = the overpower protection has tripped. CLPK = the instrument has gone beyond its peak current limit. CLrms = the instrument has gone beyond its RMS current limit. PL = the instrument has gone beyond its power limit. SF = the output is disabled by a sense fault protection WDG = watchdog protection - no I/O activity.

1Getting Started

Range field Displays the current voltage range (HIGH, LOW, or AUTO).

Settings field Displays the output settings.

Interface field Indicates the following remote interface activity:

Err = an error has occurred (press [Error] to display the error message) Lan = the LAN is connected and has been configured IO = there is activity on one of the remote interfaces

Keysight AC6800B Series Operating and Service Guide 21

1Getting Started

Rear Panel at a Glance

AC6801B

AC6802B

AC6803B

AC6804B

22 Keysight AC6800B Series Operating and Service Guide

1Getting Started

Instrument Ratings

AC6801B AC6802B AC6803B AC6804B

Output Rating for AC mode (155 V/310 V range)

Rated voltage range 1 to 155 Vrms/2 to 310 Vrms

Maximum rms current 5 A/2.5 A 10 A/5 A 20 A/10 A 40 A/20 A

Maximum power 500 VA 1 kVA 2 kVA 4 kVA

Frequency range 40 Hz to 500 Hz

Output Rating for DC mode (155 V/310 V range)

Rated voltage range 1.4 to 219 Vrms/2.8 to 438 Vrms

Maximum DC current 4 A/2 A 8 A/4 A 16 A/8 A 32 A/16 A

Maximum power 400 VA 800 VA 1.6 kVA 3.2 kVA

Input Ratings

Voltage rating

Voltage range

100 to 120 Vrms/200 to 240 Vrms, 50 Hzor 60 Hz, single-phase

90 to 132 Vrms/180 to 264 Vrms (auto detected when thepower is turned on)

Frequency range

Apparent power

800 VA or less 1600 VA or less 3200 VA or less 6400 VA or less

Power factor

Maximum input current

8 A/4A @ 100V/200V

6.7A/3.5A@ 120V/230V

Environment

Operating environment

Temperature and humidity range

0 to 40 °C (32 to 104 °F), 20% to 80% R.H. non-condensing

Altitude

Acoustic noise

Physical

Dimensions (with safety covers) 428 × 128 × 350 mm

168.5 x 50.5 x 138”

Weight Approx. 8 kg

(17.64 lb)

47 Hzto 63 Hz

0.9 (typical)

16 A/8A @ 100V/200V

13.4A/7.0 A@ 120/230V

Indoor use, OvervoltageCategory II

Up to 2000 meters

428 × 128 × 350 mm

168.5 x 50.5 x 138”

32A/16A@ 100V/200V

26.8A/14.0 A @ 120/230V

< 70 dbA

428 × 128 × 550 mm

169 x 50.5 x 216.5”

Approx. 11 kg

(24.25 lb)

Approx. 16 kg

(35.27 lb)

64 A/32A @ 100V/200V

53.6A/28.0 A @ 120/230V

428 × 256 × 600

mm\168.5"×101"×236")

Approx. 32 kg

(70.55 lb)

Input terminal IEC 320 inlet M4 terminal block M6 terminal block M6 terminal block

Output terminal M4 terminal block M4 terminal block M4 terminal block M6 terminal block

Keysight AC6800B Series Operating and Service Guide 23

1Getting Started

Installing an Optional Interface Board

The rear-panel slot can hold either the GPIB interface board (option AC68GPBU) or the analog output interface board (option AC68BALGU).

Consult with your Keysight sales representative or distributor for information regarding the availability of option AC68BALGU.

To install a board:

Check that the power switch is turned off.

Touch the grounded metal to discharge your static electricity.

Unscrew the slot cover screws and remove the cover. Retain the cover for use in case the interface board is ever removed.

Verify that the switch at the bottom rear of the slot is in the up position. It should only be down during the firmware update process.

Slide the board all the way into the connector at the back of the slot.

Use the slot cover screws to secure the board.

24 Keysight AC6800B Series Operating and Service Guide

1Getting Started

Rack Mounting

This section requires option AC68BRAC3 (for models AC6801B, AC6802B, and AC6803B) or AC68BRAC6 (for model AC6804B).

This section contains instructions for installing the instruments in a 19-inch EIA rack.

Verification of Option Kit

Verify that you received the following items. If anything is missing, please contact your nearest

Keysight Sales and Support Office.

Rack Mounting Kit AC68BRAC3 for AC6801B, AC6802B, and AC6803B

Item Description Quantity

1 Bracket 2

2 Flat Head Screws M4×0.7×10 4

3 Clip Nuts for Rack Frame 10-32 0.5-in. 4

4 Dress Screws with Nylon Washer, Phantom Gray 4

Rack Mounting Kit AC68BRAC6 for AC6804B

Item Description Quantity

1 Bracket 2

2 Flat Head Screws M4×0.7×10 8

3 Clip Nuts for Rack Frame 10-32 0.5-in. 8

4 Dress Screws with Nylon Washer, Phantom Gray 8

Installation

Do not block the air intake at the front of the instrument or the exhaust at the rear.

To prevent the instrument from falling, install suitable support angles (not included) to support the instrument as shown.

Keysight AC6800B Series Operating and Service Guide 25

1Getting Started

Rack Mounting Models AC6801B, AC6802B, and AC6803B

Remove the feet from the bottom panel.

Using the accompanying M4×10 flat head screws, install the brackets.

Using the accompanying dress screws and clipnuts (10-32), mount the instrument in the rack.

26 Keysight AC6800B Series Operating and Service Guide

Rack Mounting Model AC6804B

Remove the feet from the bottom panel.

Using the accompanying M4×10 flat head screws, install the brackets.

1Getting Started

Using the accompanying dress screws and clip nuts (10-32), mount the instrument in the rack.

Keysight AC6800B Series Operating and Service Guide 27

1Getting Started

Connecting the Power Cord

The power cord used with the product varies depending on the model. This product complies with IEC Overvoltage Category II (energy-consuming equipment supplied from a fixed installation).

The AC6801B line cordhas a molded plug on both ends. The AC6802B is a single-phase, cord-connected device that requires a plug and cord set. The AC6802B line cordmust have a plug on the utility side; you cannot hard wire the instrument to the utility.

Possible Electric Shock

This product is an IEC Safety Class I equipment (equipment with a protective conductor terminal). Be sure to ground(earth) the unit.

Connect the protective conductor terminal to earth ground.

AC6801B

Connect the power cord to the AC connector on the back of the instrument. Then connect the other end to a properly grounded power outlet. You will use this plug to disconnect from mains power.

Use the supplied power cordto connect to the AC line. If the supplied power cordcannot be used due to the rated voltage or the plug shape, have a qualified engineer replace it with an appropriate power cord of length 3 m or less. If obtaining a power cord is difficult, contact Keysight.

The power cord with a plug can be used to disconnect the instrument from the AC line in an emergency. Connect the plug to an easily accessible power outlet so that the plug can be removed from the outlet at any time. Be sure to allow enough space around the power outlet.

To connect the power cord:

1. Check that the AC power supply meets the instrument's nominal input rating, which is any nominal voltage from 100 to 120 VAC or 200 to 240 VAC. The frequency is 50 or 60 Hz.

Large voltage distortion on the AC power line can lead to malfunction. Do not connect the instrument to a generator or a similar device.

2. Check that the power switch is turned off.

3. Connect the power cordto the AC input receptacle on the rear panel.

4. Insert the power plug into an outlet.

28 Keysight AC6800B Series Operating and Service Guide

1Getting Started

AC6802B, AC6803B, and AC6804B

The AC6802B requires use of a flexible plug and cord set which must be supplied by the user. The line cord must have a plug on the utility side; you cannot hard-wire the instrument to utility mains.

The AC6803B and AC6804B instruments may be connected either by a flexible plug and cord set supplied by the user or may, alternatively, be hard wired to the utility mains. See Switchboard and

circuit breaker requirements for guidance on branch circuit and circuit breaker sizing.

A switchboard circuit breaker disconnect must be provided when connecting AC6803B and AC6804B models, regardless of whether the connection is made with a flexible cord or by hard wiring the device to the AC utility.

Possible Electric Shock

Turn offthe switchboard circuit breaker before connecting the cord. Do not use the terminal blockwith the terminal cover removed.

Possible Fire

Have a qualified engineer connect the power cord to the switchboard.

Make sure connections are correct

1. Check that the AC power supply meets the instrument's nominal input rating, which is any nominal voltage from 100 to 120 VAC or 200 to 240 VAC. The frequency is 50 or 60 Hz.

Large voltage distortion on the AC power line can lead to malfunction. Do not connect the instrument to a generator or a similar device.

2. Check that the power switch is turned off.

3. On Model AC6802B, remove the terminal cover and cable clamp attached to the AC Input terminal

block.

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4. Securely connect the power cord to match the L (line), N(neutral), and GND (ground)of the AC Input terminal block. The protective earth terminal (ground)requires an extra length of wire compared to the Line and Neutral wires. Always connect the ground wire first.

5. Install the terminal cover over the terminal block.

AC6802B

Place the cord inside the cable clamp and attache the clamp as shown:

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AC6803B

Install one of the two ferrite cores shipped with the unit close to the power cord strain relief as shown:

AC6804B

Attach crimp terminals to the switchboard end of the power cord (the end without terminals). For termination, attach a crimp-style terminal to each wire that meets the terminal screws of the switchboard to be connected, and then securely connect the wires to the terminal screws. Connection must be performed by qualified personnel.

Turn off the switchboard.

Connect the power cord to match the L, N, and GND ofthe switchboard.

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Switchboard and Circuit Breaker Requirements

Turn off the switchboard circuit breaker to disconnect the instrument from the AC line in an emergency. The breaker must be suitably located and easily reached, and it must be marked as the disconnecting device for the equipment.

This section is provided for guidance only; consult with local experts to ensure strict compliance with all local electrical code and safety requirements. These requirements take precedence over any guidance provided in this section.

Please note the following switchboard and circuit breaker requirements.

Rated current: AC6802B: 20 A AC6803B: 40 A AC6804B: 80 A

Dedicate the circuit breaker for the AC6802B, AC6803B, and AC6804B.

Keep the switchboard easily accessible at all times.

Apply a label to the switchboard, clearly identifyingthe disconnecting device and its associated model, as shown below:

The tables below provides information about worst case current consumption for all AC6800B Series models for various nominal AC mains voltages. Entries are obtained by dividing the worst case power consumption (in VA) by the nominal mains voltage and rounding to the next highest integer value. Line currents for other nominal voltages may be calculated similarly.

32 Keysight AC6800B Series Operating and Service Guide

Maximum Input VA

AC6801B AC6802B AC6803B AC6804B

Input VA(Max) 800 1600 3200 6400

Approximate Maximum Current

Line Voltage AC6801B AC6802B AC6803B AC6804B

100 8 16 32 64

120 7 13 27 53

200 4 8 16 32

208 4 8 15 31

230 3 7 14 28

240 3 7 13 27

Breakers

1Getting Started

Different regions of the world have different sizing requirements for branch circuit conductors and circuit breakers. In Europe and other regions where IEC standards apply, circuits breakers generally are rated at 100% utilization, meaning that a device connected to a dedicated branch circuit may draw a maximum current up to the circuit breaker rating. In the United States, the NEC generally specifies what is known as the "80% rule" which requires branch circuits to be rated at 1.25 times the maximum nameplate rating of the connected device.

Standard circuit breaker sizes also vary by region. The table below provides guidance for circuit breaker sizing for various nominal mains voltages. The guidance for North American mains voltages (120, 208, and 240 V) includes the 1.25 factor associated with the 80% rule. Guidance for the other voltages (100, 200, and 230 V) assumes 100% utilization. By comparing the table above with the table below, it may be seen that for the AC6801B and AC6802B models, the smallest standard size breaker affords more than enough capability to supply the device. The AC6803B and AC6804B products drawn higher currents and therefore are more likely to require higher breaker current ratings and dedicated circuits.

For convenience, notes below the table give standard breaker sizes per IEC/EN 60898-1 and the NEC for the United States.

Consult with local authorities to ensure full compliance with electrical code and safety requirements before connecting any AC6800B Series instrument.

Breaker Sizes

Line Voltage AC6801B AC6802B AC6803B AC6804B

100 15 20 35 70

120 15 20 40 70

200 15 15 20 35

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Line Voltage AC6801B AC6802B AC6803B AC6804B

208 15 15 20 40

230 16 16 16 32

240 15 15 20 40

IEC 60898-1 and European Standard EN 60898-1 Standard Sizes

6, 10, 13, 16, 20, 25, 32, 40, 50, 63, 80, and 100 A

NEMA Standard Sizes (also commonly used in Japan)

15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, and 100 A

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Quick Start

Turn the Unit On and Off

Use the Menu System

Enter Numeric and Alphanumeric Values

Set the Output Voltage

Set the Output Current Limit

Enable the Output

Use Built-in Help System

Turn the Unit On and Off

To turn the instrument on:

1. Check that the power switch is turned off (O) and that nothing is connected to any output terminal

block on the instrument.

Check that the power cord is of the correct type and correctly connected.

3. Push the (l) side of the power switch. If any unusual sound, unusual odor, fire, or smoke isperceived,

remove the power plug from the outlet or turn off the switchboard.

The display lights up after a few seconds. An automatic power-on self-test ensures that the instrument is operational.

It takes about 10 seconds for the instrument to initialize before it is ready for use.

If the instrument does not turn on, verify that the power cord is firmly connected (power-line voltage is automatically sensed at power-on). Also make sure that the instrument is connected to an energized power source. If the LED next to the power switch is off, there is no AC power connected. If the LED is amber, the instrument is in standby mode with AC power connected, and if it is green, the instrument is on.

If a self-test error occurs, a message is displayed on the front panel. For other self-test errors, see

Service and Maintenance for instructions.

Push the (O)side of the POWER switch to turn the instrument off.

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Use the Menu System

Press the [Menu] key to access the top level of the command menu, shown below.

The first line displays the menu path (Menu:\), and the second line indicates the items that are available at the present menu level (Output, Measure, and so on). The thirdline indicates the items under the highlighted function in the second line.

Use the left and right navigation keys to move across the menu items, and press [Select] to select the highlighted item and move to the next menu level.

The lowest menu level programs the selected item. Use the navigation keys to select an item. Use the numeric entry keys to enter a value, then press [Enter]. Press [Help] at the lowest menu level for detailed help.

Press [Back] to back out of a menu level without saving changes, and press [Menu] to return to the top menu level without saving changes.

Press [Meter] to return to Meter View.

Enter Numeric and Alphanumeric Values

When the focus is on a text box, its label is highlighted within a dashed outline and its present value is displayed in white text on a dark background. Pressing any key on the numeric keypad erases the existing value and allows you to type the rest of the number. Use the [u] and [t] keys to move the cursor. Press the [-] key to erase the character to the left of the cursor.

To enter letters or other non-numeric characters, such as when entering a DNS host name in [Menu]>System>IO>LAN>Modify>Name, use the up and down arrows to scroll through the list of characters.

When finished, press either [Enter] or [Select] to enter the data.

In general, pressing [Enter] or [Select] after entering a value into a text boxcauses the new value to become effective immediately. The exceptions to this rule are when you change the values in [Menu]>Output>Voltage>AC, [Menu]>Output>Voltage>DC, and [Menu]>Output>Frequency. These require you to select the DONE button and press [Enter].

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Set the Output Voltage

Method 1

Press [Menu]>Output>Voltage, then choose AC or DC.

Use the left and right navigation keys to navigate to the setting to be changed.

In the following display, the voltage setting is selected. Enter the desired setting using the numeric keypad. Then press [Select]. Use the arrows to navigate to the DONE button and press [Enter].

You can also use the [!] and [#] keys to adjust the value. Values take effect when the output is turned on.

Method 2

Press [Voltage] to select the voltage entry field. Enter the desired setting using the numeric keypad. Then press [Enter].

If you make a mistake, either use the backspace key to delete the number, press [Back] to back out of the menu, or press [Meter] to return to meter mode.

Set the Output Current Limit

To limit the output current, press [Menu]>Output>Current.

Use the [Select] key to enable or disable latching. Specify the AC and DC current limits, and press [Enter] to save your changes or [Back] to discard them.

If Enable Latching is checked, a current limitingevent longer than approximately three seconds will disable the output and indicate OC protection fault. If this box is not checked, a current limitingevent will decrease the output voltage until the current goes below the limit.

Enable the Output

Press On/Off to enable the output. If a load is connected to the output, the front panel display will indicate that it is drawing current. Otherwise, the current reading will be zero. The status indicator shows the output’s status.

For a description of the status indicators, refer to Front Panel Display at a Glance.

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Use Built-in Help System

View help

Press [Help] to view help at any time. If you are at a menu screen, you will get help for navigating through the menus, and if you are at a screen that allows you to view or edit settings, you will get help pertaining to those particular settings.

Press any key other than a navigation arrow to exit Help.

View the help information for displayed messages.

Whenever a limit is exceeded or any other invalid configuration is found, the instrument will display a message, including error code information.

Press any key other than a navigation arrow to exit Help.

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Interface Connections

GPIB Connection

USB Connection

LAN Connection

This section describes how to connect to the instrument's various communication interfaces. For additional information, refer to Remote Interface Configuration.

To begin, please install the Keysight IO Libraries Suite from the Keysight Automation-Ready CD that is shipped with your instrument.

For detailed interface connection information, refer to the USB/LAN/GPIB Interfaces Connectivity Guide, located on the Keysight Automation-Ready CD.

GPIB Connection

Connect your computer to your instrument's optional GPIB interface card using a GPIB interface cable.

Use the Connection Expert utility of the Keysight IO Libraries Suite to connect to the installed GPIB interface card.

You can now use Interactive IO within the Connection Expert to communicate with your instrument, or you can program your instrument using various programming environments.

USB Connection

Connect the instrument's rear-panel USB device port to a USB port on your computer.

With the Connection Expert utility of the Keysight IO Libraries Suite running, the computer will automatically recognize the instrument. This may take several seconds. When the instrument is recognized, your computer will display the VISA alias, IDN string, and VISA address. This information is located in the USB folder.

You can now use Interactive IO within the Connection Expert to communicate with your instrument, or you can program your instrument using various programming environments.

LAN Connection

Connect a LAN cable from the instrument's rear-panel LAN port to the site LAN or your computer. The instrument's factory default LAN settings automatically obtain an IP addressfrom the network using a DHCP server (DHCP is on). The DHCP server will register the instrument’s host name with the dynamic DNS server. The host name and IP address can then be used to communicate with the instrument. If you are using a private LAN, you can leave all LAN settings as they are. The instrument will automatically choose an IP address using AutoIP if a DHCP server is not present. The instrument assigns itself an IP address from the block 169.254.nnn. The Lan indicator appears in the lower right corner of

Keysight AC6800B Series Operating and Service Guide 39

1Getting Started

the display when the LAN port has been configured.

Use the Connection Expert utility of the Keysight IO Libraries Suite to add the instrument and verify a connection. To add the instrument, you can request the Connection Expert to discover the instrument. If the instrument cannot be found, add the instrument using its host name or IP address.

You can now use Interactive IO within the Connection Expert to communicate with your instrument, or you can program your instrument using various programming environments. You can also use your computer's Web browser to communicate with the instrument. See Using the Web Interface.

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Remote Interface Configuration

USB Configuration

GPIB Configuration

LAN Configuration

Modifying the LAN Settings

Using the Web Interface

Using Telnet

Using Sockets

Using HiSLIP

This section describes how to configure each remote interface.

This instrument supports remote interface communication over GPIB (optional), USB, and LAN (default). All three interfaces are "live" at power up, and they may be used simultaneously. To use these interfaces, install the Keysight IO Libraries software from the Keysight Automation-Ready CD and connect the instrument to your PC.

The front-panel IO annunciator indicates remote interface activity. The Lan annunciator appears when the LANport is connected and configured. This instrument continually monitors the instrument's LAN port and automatically reconfigures it when the instrument is disconnected and then reconnected to a network.

The instrument ships with an Automation-Ready CD that contains Keysight IO Libraries Suite software, which must be installed to enable remote-interface operations. The CD automatically starts and provides information on installing the software. The CD also includes the Keysight Technologies USB/LAN/GPIB Connectivity Guide, which contains additional information.

To begin configuring the remote interface from the front panel, log in to the Admin menu by pressing [Menu]>System>Admin>Login. The default password is blank. Then press [Menu]>System>Admin>IO to enable the desired interfaces.

Then press [Menu]>System>IO to configure the individual interfaces.

The Enable LAN services control enables or disables LAN services such as VXI-11, HiSLIP, sockets, and telnet. However, the LAN interface, home page and configuration page remain enabled for the Web interface.

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USB Configuration

The Keysight IOLibraries are required to control the instrument through the USB interface.

Use a standard USB cable to connect the instrument to the computer. There are no configurable USB parameters, but you can retrieve the USB connect string using the front panel.

Front Panel SCPI Command

[Menu]>System>IO>USB

The USB connect string appears.

Not available

The instrument complies with USB Specification 2.0, USBTMC Specification 1.0, and USBTMCUSB488 Specification 1.0. The maximum data rate is 12.5 Mbps, the vendor ID is 0x0957, and the product ID values are shown in the table below.

Model Product ID

AC6801B 0x1A02

AC6802B 0x1B02

AC6803B 0x1C02

AC6804B 0x1D02

GPIB Configuration

The GPIB interface requires the optional GPIB interface board and uses a standard IEEE-488 cable to connect to the computer.

Each device on the GPIB (IEEE-488) interface must have a unique whole number address between 0 and 30 (default 5). Your computer’s GPIB interface card address must not conflict with any instrument on the interface bus. To change the GPIB address:

Front Panel SCPI Command

[Menu]>System>IO>GPIB

Use the numeric keypad to enter a value from 0 to 30. Then press [Enter].

Not available

This setting is nonvolatile; it will not be changed by power cycling or *RST.

LAN Configuration

The following sections describe the primary front-panel LAN configuration functions. There are no equivalent SCPI commands.

To begin configuring the remote interface from the front panel, press [Menu]>System>IO>LAN.

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After changing LANsettings, you must save the changes by pressing System>IO>LAN>Apply. Saving changes restarts the LAN connection with the new settings. LAN settings are nonvolatile; they will not be changed by power cycling or *RST. To cancel your changes, select System>IO>LAN>Cancel.

By default, DHCP is on, which may enable communication over LAN. The acronym DHCP stands for Dynamic Host Configuration Protocol, a protocol for assigning dynamic IP addresses to networked devices. With dynamic addressing, a device can have a different IP address every time it connects to the network.

Viewing Active Settings

To view the current LAN settings:

Front Panel SCPI Command

[Menu>System>IO>LAN>Settings

Scroll with the up and down arrows.

Not available

As you scroll through the list of settings, you will see the following:

These may be different from settings requested in the front panel menu due to the configuration of the network, and you cannot edit the settings from this screen.

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Resetting the LAN

You can perform an LXI reset of the LAN settings. This resets DHCP (ON), DNS server address configuration, mDNS state (ON), and Web password (blank). These settings are optimized for connecting your instrument to a site network. They should also work well for other network configurations.

You can reset the all LANsettings to their factory defaults and restart networking. These default settings are listed under Default Settings.

Front Panel SCPI Command

[Menu]>System>IO>LAN>Reset or [Menu]>System>IO>LAN>Defaults

Select Reset to activate the selected LAN settings and restart networking.

Not available

Modifying the LAN Settings

Press [Menu]>System>IO>LAN>Modify to modify the LANsettings.

IP Address

Press [Menu]>System>IO>LAN>Modify>IP to configure the instrument addressing.

If Manual is selected, additional parameters appear, as shown below.

Front Panel SCPI Command

[Menu]>System>IO>LAN>Modify>IP

Select Auto or Manual. See below for a full description.

Not available

The configurable parameters include:

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Auto Automatically configures instrument addressing. When selected, the instrument will first try to obtain an IP address

from a DHCP server. If a DHCP server is found, the DHCP server will assign an IP address, Subnet Mask, and Default Gateway to the instrument. If a DHCP server is unavailable, the instrument will try to obtain an IP address using AutoIP. AutoIP automatically assigns an IP address, Subnet Mask, and Default Gateway addresses on networks that do not have a DHCP server.

Manual Manually configures instrument addressing by entering values in the three fields (listed below) that only appear when

Manual is selected.

IP Address

Subnet Mask

DEF Gateway

Specifies the instrument's Internet Protocol (IP) address, which is required for all IP and TCP/IP communications with the instrument. An IP Address is of the form nnn.nnn.nnn.nnn, where each nnn is a decimal number from 0 to 255 with no leading zeros (for example, 169.254.2.20).

Allows the instrument to determine whether a client IP address is on the same local subnet. The same numbering notation applies as for the IP Address. When a client IP address is on a different subnet, all packets must be sent to the Default Gateway.

Specifies the IP Address of the default gateway that allows the instrument to communicate with systems not on the local subnet, as determined by the subnet mask setting. The same numbering notation applies as for the IP Address. A value of 0.0.0.0 indicates that no default gateway is defined.

Dot-notation addresses ("nnn.nnn.nnn.nnn" where "nnn" is a value from 0 to 255) must be expressed with care, as most PC web software interprets byte values with leading zeros as octal (base 8) numbers. For example, "192.168.020.011" is actually equivalent to decimal "192.168.16.9" because ".020" is interpreted as "16" expressed in octal, and ".011" as "9". To avoid confusion, use decimal values from 0 to 255, without leading zeros.

Host Name

A host name is the host portion of the domain name, which is translated into an IP address.

Front Panel SCPI Command

[Menu]>System>IO>LAN>Modify>Name

You can enter any value from the numeric keypad. For additional characters, use the up/down navigation keys to enter an alpha character by scrolling through the selection list that appears when you press the keys. Use the left/right navigation keys to traverse the text field. Use the backspace key to delete a value. Press [Enter] when you are finished.

Not available

Host Name - This field registers the supplied name with the selected naming service. The name may contain upper and lower case letters, numbers, and dashes (-). If the field is left blank, no name is registered. The maximum length is 15 characters.

Each instrument is shipped with a default host name with the format: K-modelnumber-serialnumber, where modelnumber is the unit’s 7-character model number (e.g. AC6803B), and serialnumber is the last five characters of the 10-character serial number located on the label on the top of the unit, for example 45678.

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DNS Server and WINS Server

DNS is an internet service that translates domain names into IP addresses. It is also needed for the instrument to find and display its host name assigned by the network. Normally, DHCP discovers the DNS address information; you only need to change this ifDHCP is unused or not functional.

WINS configures the Windows service of the instrument. This is similar to the DNS service that translates domain names into IP addresses.

Front Panel SCPI Command

[Menu]>System>IO>LAN>Modify>DNS or [Menu]>System>IO>LAN>Modify>WINS

Select Primary Address or Secondary Address. See below for a full description.

Not available

Primary Address - This field enters the primary address of the server. Contact your LAN administrator for details. The same numberingnotation applies as for the IP Address. A value of 0.0.0.0 indicates that no default server is defined.

Secondary Address - This field enters the secondary address of the server. Contact your LAN administrator for details. The same numberingnotation applies as for the IP Address. A value of

0.0.0.0 indicates that no default server is defined.

mDNS Service Name

The multicast Domain Name System (mDNS) service name, which can be up to 63 characters long, is registered with the selected naming service.

Front Panel SCPI Com-

mand

[Menu]>System>IO>LAN>Modify>mDNS

Not available

mDNS Service Name -This field registers the service name with the selected naming service. The name may contain upper and lower case letters, numbers, and dashes (-). If the field is left blank, no name is registered.

46 Keysight AC6800B Series Operating and Service Guide

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Each instrument ships with a default service name with the format: Keysight-modelnumberdescription-serialnumber, where modelnumber is the unit’s 7-character model number (e.g. AC6803B), description is the description, and serialnumber is the serial number on the instrument's label.

Services

This enables and disables LAN services.

Front Panel SCPI Command

[Menu]>System>IO>LAN>Modify>Services.

Check (enable) or uncheck (disable) services as desired.

Not available

The configurable services include: VXI-11, Telnet, Web control, Sockets, and mDNS.

You can enable or disable Web control using the Web page 'Browser Web Control' tab.

Using the Web Interface

Your instrument has a built-in Web interface that lets you control it directly from the Web browser on your computer. With the Web interface, you can access the front panel control functions including the LAN configuration parameters. Up to six simultaneous connections are allowed. With additional connections, performance will be reduced.

The built-in Web interface only operates over the LAN. It requires Internet Explorer 7, Firefox, or Chrome. You also need the Java (Sun) Plug-in. This is included in the Java Runtime Environment.

The Web interface is enabled when shipped. To launch the Web interface:

Keysight AC6800B Series Operating and Service Guide 47

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Open your computer's Web browser.

Enter the instrument’s host name or IP addressinto the browser’s Address field. The following welcome page will appear.

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Click on the Browser Web Control tab in the navigation bar on the left to begin controlling your instrument.

Click the View and Modify Configuration tab for information about the instrument and its connectivity.

5. For additional help about any of the pages, click the Help with this Page tab.

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If desired, you can control access to the Web interface using password protection. As shipped from the factory, no password is set. To set a password, click View & Modify Configuration. Refer to the online help for details.

Using Telnet

In a DOS command window, enter the command telnet host name 5024 where host name is the instrument's host name or IP address, and 5024 is the instrument’s telnet port.

You should get a Telnet session box with a title indicating that you are connected to the instrument. Type the SCPI commands at the prompt.

Using Sockets

The instrument allows any combination of up to six simultaneous data socket, control socket, and telnet connections to be made.

The instrument uses port 5025 for SCPI socket services. A data socket on this port can be used to send and receive ASCII/SCPI commands, queries, and query responses. All commands must be terminated with a newline for the message to be parsed. All query responses will also be terminated with a newline.

The socket programminginterface also allows a control socket connection. The control socket can be used by a client to send device clear and to receive service requests. Unlike the data socket, which uses a fixed port number, the port number for a control socket varies and must be obtained by sending the following SCPI query to the data socket: SYSTem:COMMunicate:TCPip:CONTrol?

After the port number is obtained, a control socket connection can be opened. As with the data socket, all commands to the control socket must be terminated with a newline, and all query responses returned on the control socket will be terminated with a newline.

To send a device clear, send the string "DCL" to the control socket. When the power system has finished performing the device clear it echoes the string "DCL" back to the control socket.

Service requests are enabled for control sockets using the Service Request Enable register. Once service requests have been enabled, the client program listens on the control connection. When SRQ goes true the instrument will send the string"SRQ +nn" to the client. The "nn" is the status byte value, which the client can use to determine the source of the service request.

Using HiSLIP

The High-Speed LAN Instrument Protocol (HiSLIP) is a protocol for TCP-based instrument control. It includes conventional test and measurement protocol capabilities with minimal performance impact.

For technical details regarding HiSLIP, see www.ivifoundation.org.

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Making Output Power Connections

Preparation

Connecting the Load Cables

Connecting the Remote Sense Wires

Preparation

Wire Requirements

For connecting the load, use noncombustible load wires rated to carry the maximum rated output current.

Nominal Cross-Sectional Area (mm2) AWG Reference cross-sectional area (mm²) Allowable Current (A) (Ta=30 °C)

0.9 18 0.82 17

1.25 16 1.31 19

2 14 2.08 27

3.5 12 3.31 37

5.5 10 5.26 49

8 8 8.37 61

14 5 13.3 88

The values vary depending conditions such as the wire covering (insulator) and material (allowable temperature) and whether they are multi-core cables. For cables other than those specified in the table above, please consult with qualified personnel.

Output Terminal Cover

The output terminal is located at or near the center of the rear panel. The terminal cover location is outlined in blue. Note that the sense connector on your unit my not be in the exact location as the one shown in this figure.

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Connecting the Load Cables

Possible Electric Shock

Before making any load or sense connections be sure to turn the POWER switch off and remove the power plug from an outlet or turn off the circuit breaker ofswitchboard.

When the power switch is turned offwhile the output is on, residual voltage still remains at the output terminals.

Do not touch the output terminal block for at least 20 seconds after the power switch is tuned off.

There is a danger of electric shock. Do not use the terminal block with the terminal cover removed.

In DC mode, L is at positive potential and Nis at negative potential when setting the positive value. The opposite is true when setting the negative value.

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Check that the power switch is turned off.

Remove the terminal cover attached to the OUTPUT terminal block.

Securely connect the load wires to the OUTPUT terminal block. The length of the load cables should be lessthan 30 meters. If the load has a ground (GND) terminal, be sure to connect it to the G terminal of the instrument's OUTPUT terminal block. Be sure to use a wire that is greater than or equal to the diameter of the wires used to connect the load.

Attach the terminal cover that you removed above using the lower holes.

The L and N terminals of the OUTPUT terminal block are isolated from the AC power line, and the polarity does not constitute a problem in terms of safety. Grounding can be furnished using L or N.

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Unlock the ferrite core and open it.

Close the ferrite core. Avoid catching the wire on the ferrite core. Attach the ferrite core within 10 cm from the OUTPUT terminal block (as indicated by the arrows below). Lock the ferrite core securely in place. To avoid moving the ferrite core, attach the cable tie to fix the position of the ferrite core.

When the load is located at a distance from the instrument

The load may be away from the instrument. You can use remote control to turn the output off, but not to turn off the POWER switch. If the load is at a distance from the instrument, install a switch between the OUTPUT terminal block and the load to prevent electric shock, then turn the switch off.

For the switch circuit, use a two-pole type switch that cuts off L and N wires simultaneously. The current rating of the switch must be greater than or equal to the instrument's maximum current.

Possible electric shock

Be sure to turn the switch off before connecting the load to the terminal at the load end of the switch.

Do not touch the switch terminal or the output terminal when the output is on.

Connecting the Remote Sense Wires

Possible Electric Shock

Before making any load or sense connections be sure to turn the POWER switch offand

remove the power plug from an outlet or turn off the circuit breaker of switchboard.

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Remote sensing compensates for voltage drops in long load cables by monitoring the output voltage directly at the load, The sensing function can compensate up to 1 Vrms for a single load line. Always select a load wire that is thick enough to prevent the voltage drop in the wire from exceeding the compensation voltage.

Check that the power switch is turned off.

Remove the sense connector cover and the sense pug from the rear panel.

Make your connections as shown in the following figure. Connect the Ls (line sense) wire to pin 3. Connect the Ns (neutral sense)wire to pin 1. Sense wires size should be from AWG28 to AWG20. Strip the sense wires back approximately 7 mm.

Connect the sense leads as close to the load as possible. Do NOT bundle the sense wire-pair together with the load leads; keep the load wiresand sense wires separate. Keep the wire-pair as short as possible and twist or bundle it to reduce lead inductance and noise pickup.

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Install the sense plug and the sense connector cover.

Remote Sense Operation

Turn the sensing function on and off using the SENSE switch located below the LAN connector on the rear panel. Make sure the output is off when flipping the sense switch.

Flipping the SENSE switch up (RMT) turns the remote sense function on. Flippingit down (LCL) turns remote sensing off. The above figure shows the remote sense function turned off.

The following sense fault will allow the unit to continue to operate, but the output voltage will fluctuate by several volts.

l When the sense wires come loose (open) during operation

The following sense faults will trigger a sense fault protection (SF) on the front panel and disable the output.

l When the sense wiring is reversed at the load l When the sense wires are shorted together l When both sense wires are connected to the Line at the load l When both sense wires are connected to the Neutral at the load l When the voltage drop exceeds 1 Vrms for a single load wire

A local lockout (LLO)command sent via the remote interface disables the operation of the sense switch. To enable the operation of the sense switch, Use a communication command to clear the local lockout (LLO) command

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Voltage Ranges and Limits

The instrument has two voltage ranges: 155 V (low) and 310 V (high). It can also autorange between the two ranges in AC or DC mode. The instrument will not switch voltage ranges (155 V, 310 V, or AUTO), with the output on. If you attempt to do so, the output shuts off. Also, if you switch the range to 155 V when the voltage is set above 137.5 V the instrument sets the output voltage to 0 V.

Autoranging automatically switches to the 155 V or 310 V range according to the specified voltage. As it does so, if the output is on, the instrument turns the output off for approximately 0.5 seconds and turns it on again after the range switches.

The tables below indicate the output voltage setting ranges and maximum output current.

Voltage range Output Voltage Setting

AC Mode DC Mode or AC+DC Mode

155 V 0.0 to 157.5 V -222.5 to +222.5 V

310 V 0.0 to 315.0 V -445.0 to +445.0 V

Voltage range Maximum Output Current

AC Mode DC Mode or AC+DC Mode

AC6801B 155 V 5 A 4 A

310 V 2.5 A 2 A

AC6802B 155 V 10 A 8 A

310 V 5 A 4 A

AC6803B 155 V 20 A 16 A

310 V 10 A 8 A

AC6804B 155 V 40 A 32 A

310 V 20 A 16 A

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The following chart shows the maximum current output by voltage.

Upper and lower voltage limits

The voltage limit ranges are shown below. Set the limits so that the upper limit is greater than or equal to the lower limit.

Output mode Voltage Range Lower Limit Upper Limit

AC Mode 155 V 0.0 to 157.5 V 0.0 to 315.0 V

310 V 0.0 to 315.0 V 0.0 to 315.0 V

DC mode 155 V -445.0 to 222.5 V -222.5 to 445.5 V

310 V -445.0 to +445.0 V -445.0 to +445.0 V

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Error Checking and Soft Limits

The AC6800 Series instruments include error checking measurements and soft limits that prevent unintended operations from being carried.

Basic Principles

Settings are not automatically changed by either front-panel or SCPI commands, unless the changes are obvious and expected.

Improper settings or combination of settings are not allowed for active settings.

User actions which would result in improper active settings generate error messages.

Inactive settings are not checked for errors in response to range changes. If these settings will become active due to output mode changes, such as switching coupling from AC to DC, or due to the enabling of soft limits, error checks are performed before makingthe settings active.

Error checks should be performed in response to the following events:

Changing Settings invokes Settings Error Checking

Enabling soft limits invokes Settings Error Checking

Changing ranges from high to low invokes Range Error Checking

Changing output coupling invokes Output Coupling Error Checking

Changing to Step mode invokes Settings Error Check

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Range Error Checking

The instrument uses the following method to check for range errors.

Active settings are limited by MINimum and MAXimum values. The active settings considered are only those relevant to the output coupling. In AC+DC coupling, both DC and AC voltage settings are active, so range checking is applied to the peak absolute value of the combined waveforms.

In addition to the immediate DC and AC voltage, in Step mode the triggered voltage setting (VOLT:OFFS:TRIG or VOLT:TRIG, depending on the output coupling) is also checked to ensure that an accepted trigger does not cause an invalid state.

Frequency settings are independent of range, output on/off status, and output coupling.

Output coupling and output range may only be changed when the output is off. Therefore, the instrument always checks for inconsistent settings when you try to change the output coupling or range before turning the output on.

If output coupling settings are changed, the Range Error Checking and Soft Limits Checking are both made for any parameter that becomes active as a result of the output coupling change.

Settings that are valid on the low output range are always valid on the high output range, but the Range Error Checking and Soft Limits Checking are both performed whenever the instrument is asked to change ranges in either direction.

Soft Limits Checking

The soft limits are checked only if soft limits are enabled at the time the soft limits are set or at the time when the soft limits are enabled.

Soft limits can be configured for DC voltage, AC voltage, and Frequency. The soft limit check is independently performed for the AC and DC components in AC+DC coupling.

Soft limits also apply to the corresponding trigger values of DC voltage, AC voltage, and Frequency but only in Step mode.

Settings Error Checking

These settings verify that the voltage setting is correct.

In AC and DC output modes, the setting must be between the range's MIN and MAX values.

In AC+DC mode, an additional check verifies that the peak voltage does not exceed 194.5 V (low range) or 389 V (high range).

If soft limits are enabled, the instrument checks that the setting is within the low and high soft limits.

Settings errors are checked when the user changes the mode setting to Step mode.

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Output Coupling Error Checking

Changing output coupling from AC+DC requires no error check. Otherwise, changingto DC coupling runs the Volts DC settings error check, and changing to AC or AC+DC runs the Volts AC settings error check.

Coupled Parameter Error Checking

Inactive parameters generally are not checked for being within range or compliant with soft limits even if soft limits are active for the parameter type. This minimizes nuisance error messages when setting values for inactive parameters. Instead, checks are performed when the parameter is made active.

However, parameter entries are always checked for being within the MINand MAX values even if the parameter is inactive. For example, VOLT:TRIG must be from 0 to 310, even if VOLT:MODE is FIXed.

If coupled parameter settings change, the instrument check on each active parameter setting.

For AC+DC mode, the peak value (√2×AC +|DC|) cannot exceed 389 V.

For AC mode, the voltage setting must be from 0 to the full scale value of the range, and for DC mode, the value must be between the positive and negative full scale value of the range.

Checks are performed in the following order:

The Coupled Parameters Error Checking is performed first.

Depending on the pending front-panel entry or remote command and the instrument’s operating status, the Coupled Parameters Error Checking may lead to the other error checks.

In some cases, multiple passes through the Settings Error Check are required. For example, if OUTPut:COUPLing is changing from AC to ACDC and VOLT:OFFSet:MODE is STEP, then both the IMMediate and TRIGgered values for DC volts are checked for being within range and for meeting the peak voltage constraint for the currently selected range. These checks occur before the OUTPut:COUPLing change is accepted.

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Keysight AC6800B Series Operating and Service Guide

2 User Information

Welcome

Front Panel Menu Reference

General Front-Panel Organization

Selecting the Output Voltage Programming Source and Output Mode

Specifying Output Coupling

Programming AC Output

Programming DC Voltage

Setting Limit Values

Turning the Output On and Off

Storing and Retrieving Instrument States

Configuring Instrument Preferences

Calibrating from the Front Panel

Configuring Overcurrent Protection

Configuring Watchdog Protection

Configuring and Clearing Measurements

Using External Analog Control

Viewing Error Messages

2User Information

Welcome

This manual includes user, service, and programming information for the Keysight AC6800B Series of compact AC sources, which can be readily used on the bench or in a test rack. The simple user interface allows you to easily access and view setup and measurement information directly from the front panel or programmatically.

Choose from models up to 4000 VA, all with 0 to 310 Vrms and 40 to 500 Hz output capability. Both LAN/LXI Core and USB interfaces are standard. You can optionally choose to add GPIB or an analog interface board to add basic transient signals.

Instrument Driver

In addition to using SCPI commands, you can also control the instrument usingthe IVI driver, available at ivifoundation.org. The newest version can also be downloaded at

www.keysight.com/find/AC6800firmware.

Models and Options

The AC6800B Series includes four models and four options, as shown below.

Model Maximum Power (VA)

AC6801B 500

AC6802B 1,000

AC6803B 2,000

AC6804B 4,000

The AC6800B Series has four options, described below.

Option Description

AC68BRAC3 Rack mounting kit for AC6801B, AC6802B, and AC6803B

AC68BRAC6 Rack mounting kit for AC6804B

AC68GPBU GPIB interface board

AC68BALGU Analog interface board - controls the output with external analog signals in two modes:

EXT-AC: The AC output voltage varies according to the input DC signal. EXT-DC: The input waveform is amplified and output.

Documentation, Firmware, and Technical Support

You can download the latest version of this document from www.keysight.com/find/AC6800B-doc . The latest version is also available for mobile devices at www.keysight.com/find/AC6800B-

mobilehelp.

For the latest firmware revision go to the product page at www.keysight.com/find/AC6800B.

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If you have questions about your shipment, or if you need information about warranty, service, or technical support, contact Keysight Technologies.

Contacting Keysight Technologies

United States: (800) 829-4444 Europe: 31 20 547 2111 Japan: 0120-421-345

Use www.keysight.com/find/assist to contact Keysight worldwide.

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Front Panel Menu Reference

This is an overview of the front-panel menus.

Press [Menu] to access the front-panel menus.

For a menu navigation tutorial, see Use the Menu System.

Level 1 Level 2 Levels 3&4 Description

Output Voltage Sets output voltage and limits

AC Sets ACvoltage and limits

DC Sets DCvoltage and limits

Prog Programs voltage with optional analog board

Frequency Sets output frequency and limits

Range Selects voltage range

Coupling Selects output coupling

Current Sets output current limits

Phase Sets output-on phase

Measure IpkHold Displays or clears peak held current

Coupling Selects the measurement coupling

Average Selects number of measurements to average

Protect Current Configures current limiting

WDog Configures IO watchdog

Clear Clears protection conditions and displays output status

States Reset Resets instrument to the reset (*RST) state

SaveRecall Saves and recalls instrument settings

PowerOn Selects the power-on instrument state

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Level 1 Level 2 Levels 3&4 Description

System IO Configures LAN, USB, and optional GPIB

LAN Configures LAN IO

Settings View the currently active network settings

Modify Modify the network configuration

(IP, Name, DNS, WINS, mDNS, Services)

Apply Applies the configuration changes and restarts unit

Cancel Cancels the configuration changes

Reset Performs an LXI LCI reset of LANsettings and restarts

Defaults Resets LAN settings to factory defaults and restarts

USB Displays USB identification string

GPIB Display or change the GPIB address

Preferences Displays Preferences commands

Display Configures screen saver and start-up meter view

Saver Configures the screen saver

View Configures the start-up meter view

2User Information

Lock/Unlock Locks the front panel keys with a password

Admin (must log in)

About Displays model, options, serial number, and firmware

Cal Displays calibration commands

Current Calibrates current

IO Enables/disables the LAN, USB, and GPIB

Sanitize Performs NISPOM secure erase of all user data

Password Changes the administration password

Displays Admin commands

DC Calibrates DC voltage

AC Calibrates AC voltage

Count View the calibration count

Date Saves the calibration date

Save Saves the calibration data

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General Front-Panel Organization

Keypad Layout

Item Description

Mains Switch Rocker switch for turning the instrument on(1) and off(0). The LINE indicator turns green when

power is on.

Display 64 × 256 monochrome dot matrix display

Status LEDs PROTECT Lights in red when a protection feature has been activated

OUTPUT Lights in green when output is ON

System Keys [Meter] Selects Metering Mode displays and cycles through three display formats (METER_VI, METER_

VIP, and METER_ALL).

[Menu] Toggles between the top Menu level and the Metering Mode display (METER_VI, METER_VIP, or

METER_ALL).

[Protect] Opens the Protect menu (equivalent to [Menu]>Protect).

[Back] Backs out of current menu, eventually returning to the Metering Mode display. Not a backspace

for numeric entries.

[Help] Displays context-sensitive help messages.

[Error] Displays messages in ERROR queue.

Navigation Keys [p] [q] [t]

[u]

[Select] Selects a menu item to go down in a menu tree. Also confirms a user entered value, such as a

Navigate within menus, display fields, or data entry fields.

GPIB address.

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Item Description

Settings Keys [On/Off] Toggles the output ON or OFF.

[Voltage] Opens the VAC or VDC (depending on output coupling mode) Settings fields in the Metering Mode

display (See Section 6).

[Freq] Opens the Frequency Settings field in the Metering Mode display.

2User Information

Numeric Entry Keys

[0] to [9] Enters a numeric digit.

[.] Enters a decimal point.

[-] Toggles the negative sign.

[E] Specifies an exponent for a numeric entry. For example, 1.23E2 indicates 123.

[-] Deletes the most recently entered digit. When a numeric field is first selected, this key erases the

entire entry.

[!] [#] Increment or decrement a Settings field. No effect on numbers entered under the [Menu] key.

[Enter] Finishes a numeric entry.

You can immediately change values by directly entering numbers into the Settings field.

Display Layout

This section describes the instrument's display. The default Metering Mode is shown below.

Field Description

Metering Measurement information (content varies by mode)

Status Operating status (content varies by mode)

Range Output range setting: LOW, HIGH, or AUTO

Settings Settings for VAC, VDC, and Frequency

Interface ERRORand LAN status. Shows IO in rightmost cell when remote control via LAN is operational.

The possible entries for the Status, Range, and Interface fields are shown below.

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Field Display Description

Status Off Output is disabled

CV Constant voltage mode

CLrms Current limit mode

PL Power limit mode

OV Overvoltage protection; output OFF

OC Overcurrent protection (rms/avg); output OFF

OCPK Overcurrent protection (peak); output OFF

OP Overpower protection; output OFF

OT Overtemperature protection; output OFF

LV Low voltage protection (AC input); output OFF

WDG Watchdog timeout error; output OFF

SF Sense fault protection; output OFF

Range LOW Selected range up to 155 VAC (219 VDC)

HIGH Selected range up to 310 VAC (438 VDC)

AUTO Autoranging selected (not available in EXT-AC or EXT-DCmode)

Interface Err One or more messages in error queue

LAN (displayed) LXI LAN "No fault"

LAN (blinking) LXI LAN "Identify"

(LAN section blank) LXI LAN "Fault"

IO Remote activity via the LAN connection

If AUTO is selected prior to entering either of the external programming modes, the range selected by autoranging is retained until changed by the user. The range field is updated to reflect the actual range when the external programming mode is first entered (if AUTO is selected).

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Selecting the Output Voltage Programming Source and Output Mode

Select the Output Voltage Programming Source

The EXT-AC and EXT-DC modes require the optional analog interface board (option AC68BALGU). You cannot use the analog output interface board with the GPIB interface because both boards use the same slot.

Without the analog interface board, only the Internal option is available. This controls the output voltage by the instrument. The Internal option is also selected by *RST.

EXT_AC configures the instrument to behave as a variable gain amplifier controlled by an external DC level. The internal frequency control remains in effect.

EXT_DC mode configures the instrument to behave as a fixed gain power amplifier. Internal controls for voltage and frequency are disabled.

You cannot set the voltage limit when the instrument is being controlled by external analog signals. An excessive external voltage may damage the load.

Front Panel:

1. Select [Menu]>Output>Voltage>Prog.

2. Select Internal, EXT_AC, or EXT_DC and press [Select].

SCPI: VOLTage:PROGramming:SOURce

Select the Output Mode

You can switch the output among the five modes shown below when the output is turned off.

The EXT-AC and EXT-DC modes require the optional analog interface board. You cannot use the analog output interface board with the GPIB interface because both boards use the same slot.

Output Mode Description

AC Mode Produce AC output

DC mode Produce DC output

AC+DC mode Superimpose DC voltage on the AC output

EXT-AC mode Output sine waves using external DC signals

EXT-DC mode Amplify and output the waveform applied externally

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Specifying Output Coupling

The instruments support three types of output coupling:

Coupling Description

AC+DC AC output with positive or negative DC offset

AC AC output

DC Positive or negative (bipolar) DC output

In AC+DC mode the combined peak voltage must be between -222.5 and +222.5 V for the low range or -445 and +445 V for the high range.

Turn the output off to change the output coupling. The instrument performs error checking to ensure that pending active settings remain within range.

Front Panel: [Menu]>Output>Coupling

SCPI: OUTPut:COUPling AC|DC|ACDC

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Programming AC Output

You can program the voltage, frequency, frequency limits, and starting phase angle of the ACoutput. Before programmingthe output, select the appropriate output mode and voltage range.

Output Mode

Front Panel: [Menu]>Output>Voltage>AC

SCPI: OUTPut:COUPling AC

Voltage Range

Front Panel: [Menu]>Output>Range

SCPI: [SOURce:]VOLTage:RANGe[:UPPer] 155|310|MINimum|MAXimum

The output must be off to change the range settings. The instrument checks to ensure that currently active settings remain within the new range.

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Voltage

Front Panel:

Press [Voltage], enter the desired value with the numerickeypad, and press [Enter]. You may also change the voltage and voltage limits by pressing [Menu]>Output>Voltage>AC. To specify the voltage limits, check the EnableLimits boxto enable the LoLimit and HiLimit.

The voltage limits do not limit output; they are safety functions that prevent unintentional settings. For example, setting the voltage Lo Limit and Hi Limit to 10 and 20 Vrms would prevent you from specifying 175 Vrms when you intended 17.5 Vrms.

Use the [Back] key or QUIT button to exit without saving changes, or use the DONE button to save the changes.

SCPI:

[SOURce:]VOLTage[:LEVel][:IMMediate][:AMPLitude]

[SOURce:]VOLTage[:LEVel]:LIMit[:STATe]

[SOURce:]VOLTage[:LEVel]:LIMit:LOWer

[SOURce:]VOLTage[:LEVel]:LIMit:UPPer

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Frequency

You can set the output frequency from 40 to 500 Hz for AC mode and AC+DC mode, regardless of whether the output is on. Set the limits so that the upper limit is greater than or equal to the lower limit.

Select [Menu]>Output>Frequency. Then enter the desired frequency and limit values on the numeric keypad and select DONE. To specify the frequency limits, check the EnableLimits box to enable the LoLimit and HiLimit.

The frequency limits do not limit output; they prevent unintentional settings. For example, setting a frequency Lo Limit and High Limit of 40 and 45 would prevent you fromaccidentally entering a frequency of 425 instead of 42.5.

SCPI:

[SOURce:]FREQuency[:CW]

[SOURce:]FREQuency:LIMit[:STATe]

[SOURce:]FREQuency:LIMit:LOWer

[SOURce:]FREQuency:LIMit:UPPer

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Phase Angle

To select the output-on starting phase for AC output at turn-on, select [Menu]>Output>Phase.

Select the Synchronize checkbox to enable output phase control, otherwise the turn-on phase will be random.

The output always turns off at the zero-crossing phase to ensure the instrument's output capacitor discharges when there is no load.

SCPI: TRIGger:SYNChronize:PHASe[:ON]

Typical Command Sequence

A typical command sequence is shown below:

OUTPut:COUPling AC Select AC mode.

VOLTage:RANGe 155 Select the 155 V range.

VOLTage 110 Specify 110 V.

FREQuency 55 Specify 55 Hz.

OUTPut ON Turn the output on.

When the output is turned on, you cannot change the output mode or voltage range. You must turn the output off first. However, you can change AC voltage and frequency settings when the output is on.

The upper and lower limits may be set if the limit feature is enabled. To save your changes, navigate to Done and press [Select] or [Enter]. You may exit without saving changes by pressing the [Back] key or by navigating to QUIT and pressing [Select] or [Enter]. If soft limits are enabled, an error check confirms that the frequency setting is between the low and high limits.

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VOLTage:RANGe 155 Select the 155 V range.

VOLTage:LIMit:UPPer MAX Sets upper limit to maximum, 315 V

VOLTage:LIMit:LOWer MIN Sets lower limit to minimum, 0 V

VOLTage 120 Sets voltage to 120 V

FREQuency:LIMit:UPPer MAX Sets upper limit to maximum, 500 Hz

FREQuency:LIMit:LOWer MIN Sets lower limit to minimum, 40 Hz

FREQuency 70 Sets frequency to 70 Hz

The commands above set the limits to accommodate the widest possible VOLTage and FREQuency settings within the given range. On the 155-V voltage range, the VOLTage setting cannot exceed

157.5 V.

In AC+DC mode, the voltage can be specified only when the AC and DC voltage settings are within the voltage limit range and the peak of the AC+DC waveform is between -445 and 445 V.

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Programming DC Voltage

The AC6800B Series can output DCvoltage. When the output is turned on, you cannot change the output mode or voltage range. You must turn the output offfirst. You can set the voltage regardless of whether the output is on or off.

The general procedure for specifying DCoutput is:

Step Description Front Panel SCPI Command

1 Turn the output off (optional). [On/Off] OUTPut OFF

2 Select the DC voltage mode. [Menu]>Output >Coupling >DC OUTPut:COUPling DC

3 Select the DCvoltage range (155 V, 310 V, or

AUTO)1.

4 Specify the DCvoltage limit to be slightly lar-

ger than the voltage to be output.

5 Specify the DCvoltage to be output. VOLTage:OFFSet

6 Turn the output on. [On/Off] OUTPut ON

The DC voltage range for the 155 V range is ±222.5 V, and for the 310 V range it is ±445.0 V.

[Menu]>Output >Range VOLTage:RANGe

[Menu]>Output >Voltage >DC VOLTage:OFFSet:LIMit

DC Voltage Limit

The instrument allows you to limit the allowable values for the voltage offset. The following example allows the VOLTage:OFFSet to be set to any value within the given range. The factory default lower limit of DC mode is 0.0 V, so remember to change the limit if you need to output a negative DC voltage.

VOLTage:RANGe 310 Select the 310 V range.

VOLTage:OFFSet:LIMit:UPPer MAX Set the upper limit to 445 V.

VOLTage:OFFSet:LIMit:LOWer MIN Set the lower limit to -445 V.

The *RST default for VOLTage:OFFSet:LIMit:LOWer is to 0 for safety reasons.

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Setting Limit Values

The limit function limits the instrument's output to prevent damage to the load. You should specify limits before applying output to the load, but you can set limits with the OUTPUT on. Note that the limit value takes precedence over the setting value for voltage and frequency. If the current setting value exceeds the limit range when the voltage or frequency limit value is changed, the setting value (voltage or frequency) is set to a limit value that is closest to the current setting value.

Current limit value and current limit operation

The instrument has programmable ACand DCcurrent limits. If the load attempts to draw more average DC current or RMS AC current than the programmed limit, or if the unit attempts to draw more peak current than the system-defined peak limit, the instrument will take action to prevent excessive current.

The current detection response is not instantaneous.

If the instrument draws average DC current or RMS AC current that exceeds the limit, it displays OC in the Status field and sets the CL-RMS bit (bit 12) in the STATus:QUEStionable register.

If the instrument detects peak current exceeding the limit, it displays OCPK in the Status field and sets the CL-PEAK bit (bit 10) in the STATus:QUEStionable register.

Front Panel:

[Menu]>Protect>Current

[Menu]>Output>Current

Both ofthe above sequences set the same current limits.

SCPI:

CURR:PROT:STAT 0 The voltage output reduces the current without trippingthe output.

CURR:PROT:STAT 1 The output turns off after the voltage reduction continues for a given period.

[1]

Calculated for the RMS value. Due to the relation between the processing time of measurement and

the voltage resolution, it may take a few seconds to exceed the current limit.

Whenever the instrument detects peak current exceeding the limit, it raises an OVERLOAD warning, and sets the CL-PEAK bit (bit 10) on the STATus:QUEStionable register.

The current limit value of the output current can be specified as shown in the following table.

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Limit

Output mode

AC Mode 0.1 to 5.25 A 0.2 to 10.5 A 0.4 to 21.0 A 0.8 to 42.0 A

DC mode 0.1 to 4.2 A 0.2 to 8.4 A 0.4 to 16.8 A 0.8 to 33.6 A

AC6801B AC6802B AC6803B AC6804B

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Turning the Output On and Off

Press [On/Off]to toggle the output on and off.

ON:The specified voltage is output and the Output LED turns green.

OFF:The output voltage turns off (high impedance mode) and the Output LED turns off.

The output is always off at power-on.

If a protection function trips, the output is turned off. However, if the current limit operation is limit control and the overload protection function (current limit) trips, the output is not turned off.

To prevent the possibility of electric shock, do not touch the output terminal block.

When the output is turned on, several volts of undershoot or overshoot may appear for a time period on the order of ten microseconds.

Principle of Output on/off

The AC6800B Series instruments do not disconnect output from the internal circuits mechanically using switches and relays. Instead, when the output is turned off, the instruments electrically increase output impedance to limit the output without chattering.

The resistance in the high-impedance condition is shown below.

Voltage Range AC6801B AC6802B AC6803B AC6804B

155 V approx. 40 kΩ approx. 20 kΩ approx. 10 kΩ approx. 5 kΩ

310 V approx. 80 kΩ approx. 40 kΩ approx. 20 kΩ approx. 10 kΩ

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Storing and Retrieving Instrument States

State Storage

The instrument stores the parameters shown in the table below at five-second intervals. To ensure that settings changes are saved before power-down, wait at least five seconds after changinga setting before turningthe instrument off. Otherwise, the last settings may not be stored.

The instrument's output is always off at power up.

Stored Settings

Output mode (AC, DC, AC+DC, EXT-AC, or EXT-DC)

Output voltage range (155 V, 310 V, or AUTO)

Voltages, AC and DC

Frequency

Measured value display (RMS, PEAK, AVG, or W)

Limit values AC Voltage limits (lower and upper)

Current limit

Frequency limits (lower and upper)

DC Voltage limits (lower and upper)

Current limit

Current limit operation

Save and Recall Instrument States

You can save instrument states into 10 nonvolatile state storage locations. This allows you to switch among several configurations quickly, or to test sudden changes in output voltage or frequency. Select [Menu]>States>SaveRecall to save or recall a state. Specify the state storage location (0 through 9) and select either Recall or Save.

If a state is recalled with the output on and includes an output mode or voltage range change, a short alarm sounds and the state is not recalled when the output mode or voltage range switches. If this happens, turn the output off, recall the memory, and then turn the output back on.

SCPI: *RCL and *SAV

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Reset the Instrument to Factory Default Values

Select [Menu]>States>Reset>Reset to reset the instrument to its factory defaults.

SCPI: *RST

Configure the Instrument's Power-on State

Select [Menu]>States>PowerOn to configure the instrument's power-on state.

Reset state (*RST) is the factory default.

Recall state 0 will recall the state saved in location 0.

Auto resume causes the unit to power up in its power-down state. State changes occurring in the last three to four seconds before power-down may not be restored. For this option, the output is always off regardless of whether it was on at power-down.

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Configuring Instrument Preferences

Press [Menu]>System >Preferences to configure the display and to lock and unlock the instrument.

Configure the Screen Saver

Press [Menu] >System>Preferences>Display>Saver to configure the screen saver.

Screen saver – enables the screen saver function.

Saver delay – specifies the time in minutes between the last time any communication occurs with the instrument or a key is pressed until the screen saver goes into effect.

Wake on I/O – restores the display whenever any I/O interface activity occurs.

SCPI:

SYSTem:SSAVer[:STATe]

SYSTem:SSAVer:DELay

SYSTem:SSAVer:RWAKeup

Specify the Startup Meter View

1. Press [Menu] >System>Preferences>Display>View to select the instrument's initial meter

view.

2. Press [Select] and use the up and down arrows to highlight your selection.

3. Press [Select] to confirm your selection and then press [Meter] to exit. This setting does not change

the current meter view; it only changes upon cycling power. For example, the image below shows the starting meter viewwith Volt, Curr, Power selected.

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Lock and Unlock the Front Panel

Be certain that you enter the password carefully and remember it. You cannot clear the password by cycling instrument power.

Press [Menu] >System>Preferences>Lock to lock the front panel.

There is no factory default password.

The password must be 4 to 15 characters long and may include any of these characters:

Characters Description

A-Z Upper case letters

a-z Lower case letters

0-9 Numeric digits

+ - ( ) . , <space> Plus, minus, parentheses, period, comma, space

To unlock the instrument, press any key other than [Meter] and enter the password.

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Calibrating from the Front Panel

Log in with the administration password at [Menu]>System>Admin>Login and then use [Menu]>System>Admin>Cal to enter the calibration menu, shown below. Remember to log out with [Menu]>System>Admin>Logout after you have completed your calibration tasks.

Node Meaning

DC Calibrate DC voltage programming and measurement (low and high ranges).

AC Calibrate AC voltage programming and measurement (low and high ranges).

Current Calibrate current measurement (low and high ranges).

Count View the calibration count. The calibration count is incremented whenever calibration is saved, the administration

password is changed, or the instrument firmware is updated.

Be sure to read and record the calibration count when you first receive your instrument from the factory.

Date Enter the calibration date, which can be up to 15 characters.

Save Save the updated calibration constants.

For calibration details, see Calibration.

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Configuring Overcurrent Protection

Use the [Menu]>Protect menu to configure or clear overcurrent protection. Note that this same menu can be found under [Menu]>Output >Protect.

Configure Overcurrent Protection

To configure overcurrent protection, select [Menu]>Protect>Current.

The current limits are based on the RMS value for both AC and DC current (DC and RMS values are equivalent for DC-only signals). If AC+DC output coupling is selected, the AC Current Limit applies.

Current limit settings vary by model, as shown below. The AC limits apply in AC and AC+DC output coupling modes.

Model Number AC Limit Range (Arms) DC Limit Range (Arms)

AC6801B 0.1 to 5.3 0.1 to 4.2

AC6802B 0.2 to 10.5 0.2 to 8.4

AC6803B 0.4 to 21.0 0.4 to 16.8

AC6804B 0.8 to 42.0 0.8 to 33.6

SCPI: [SOURce:]CURRent:PROTection:STATe

Clear Overcurrent Protection

To clear an overcurrent protection condition, select [Menu]>Protect>Clear.

The current output status condition is displayed to help you ensure that clearing the protection condition is appropriate and likely to produce expected results.

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Configuring Watchdog Protection

The watchdog protection feature places the output in protection mode ifa SCPI command or query is not received within the specified delay period, which may be set between 1 and 3600 seconds (factory default 60).

Press [Menu] >Protect>WDog to configure watchdog protection. It is disabled by factory default.

SCPI:

OUTPut:PROTection:WDOG[:STATe]

OUTPut:PROTection:WDOG:DELay

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Configuring and Clearing Measurements

The Measure menu [Menu]>Measure allows you to view and clear the current peak hold value, configure the measurement coupling, and specify the number of readings to average.

View and Clear IpkHold

Press [Menu]>Measure>IpkHold to display the current peak hold value. Higher peak values overwrite previously measured lower values until power is cycled or until IpkHold is reset using Clear.

The number displayed next to ApkH is not editable; you may either press Clear or [Back] to exit. Using [Back] does not clear the value.

SCPI: SENSe:CURRent[:PEAK]:HOLD:CLEar

Configure Measurement Coupling

Press [Menu]>Measure>Coupling to configure measurement coupling (AC, DC, or AC+DC). The factory default is AC+DC.

AC+DCThe RMS value of the output is presented in the metering displays. AC The AC component of the output is presented in the metering displays. DC The average (DC) component of the output is presented in the metering displays.

The Meter All display is not affected by measurement coupling selection.

Specify Number of Readings to Average

Press [Menu]>Measure>Average to specify the number of readings to average for measurements. The drop-down menu allows you to choose 1, 2, 4, 8, or 16. Press [Select] to make your selection.

SCPI: SENSe:AVERage

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Using External Analog Control

EXT-AC Mode

EXT-DC Mode

The analog interface board (option AC68BALGU) supports two external analog programming methods, EXT-AC and EXT-DC. In EXT-AC mode the voltage of the output AC waveform (sine wave) is varied according to the input DC signal. In EXT-DC mode the input waveform is simplify amplified and output.

You cannot set the voltage limit when the AC source is being controlled using external analog signals. Accidentally applying an excessive external voltage may damage the load.

Analog controls

Control Description

INPUT BNC terminal for applying the external signal. The input is electrically isolated from the output terminals of the AC

source.

ATT Input attenuator switch

GAIN Variable resistor for fine-adjusting the gain (voltage amplification ratio)

OFFSET Variable resistor for fine-adjusting the offset.

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EXT-AC Mode

In EXT-AC mode, the unit outputs AC voltage ranging from 0 V to 155 V (when the 155 V range is selected) or 0 V to 310 V (when the 310 V range is selected) with respect to a DC input signal ranging from 0 V to ±10 V.

The ATT switch must be set ON. Otherwise the load can be damaged due to excessive voltage.

Step 1. Turn the AC source off

Step 2. Turn the ATT switch on. The allowable input DC voltage range is -10 V to +10 V.

Step 3. Connect an external signal (generator) to the INPUT terminal.

Step 4. Turn the AC source on.

Step 5. Select EXT_AC mode.

Step 6. Select a voltage range (155 V or 310 V). Autoranging is not available in analog mode. If Auto was selected before the instrument entered EXT-AC mode, the presently selected range is retained.

Step 7. Set the frequency (40 Hz to 500 Hz). You can also set the frequency using the Meter display (see step 9).

Step 8. Apply the external signal to the INPUT terminal.

Step 9. Turn the output on. The analog output voltage is displayed on the Meter menu. Note that the frequency settings can be adjusted from the Meter display in the settings area.

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Adjusting the Offset

You can fine-adjust the offset by turning the OFFSET adjustment using a Phillips screwdriver. Adjust the offset so that the output voltage is minimum with the input BNC connector shorted.

Adjusting the Gain

You can fine-adjust the gain by turning the GAIN adjustment using a Phillips screwdriver . Adjust the gain so that the output voltage is 155 Vac (in the 155 V range) when 10 VDC is applied to the input BNC connector.

EXT-DC Mode

In EXT-DC mode, the input waveform is simply amplified and output.

With the ATT switch set OFF, the AC source outputs a voltage 100 or 200 times the input voltage ranging from -2.19 V to +2.19 V. With the ATT switch set ON, the AC source outputs voltage ranging from -219 V to +219 V (when 155 V range is selected) or -438 V to +438 V (when 310 V range is selected) with respect to a signal input rangingfrom -10 V to +10 V.

Step 1. Turn the AC source off

Step 2. Set the ATT switch On or Off. Off: The input voltage range is -1.90 V to +1.90 V (peak value) The allowable input DC voltage range is

-10 V to +10 V. On: The input voltage range is -10 V to +10 V.

Step 3. Connect an external signal (generator) to the INPUT terminal.

Step 4. Turn the AC source on.

Step 5. Select EXT_DC mode.

Step 6. Select a voltage range (155 V or 310 V). Autoranging is not available in analog mode. If Auto was selected before the instrument entered EXT-AC mode, the presently selected range is retained.

Step 7. If an AC voltage is being applied, set the frequency (40 Hz to 500 Hz). To display the measured value accurately, set the frequency so that it matches the frequency of the external input signal. If the set frequency is out of synchronization, the measured value will be unstable.

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Step 8. Apply the external signal to the INPUT terminal.

Step 9. Turn the output on. The analog output voltage is displayed on the Meter menu.

Adjusting the Offset

You can fine-adjust the offset by turning the OFFSET adjustment using a Phillips screwdriver. Adjust the offset so that the output voltage is as close to 0 V (DC) as possible with the ATT switch turned off and the input BNC connector shorted.

Adjusting the Gain

You can fine-adjust the gain by turning the GAIN adjustment using a Phillips screwdriver . Adjust the gain so that the output voltage is 155 Vac (in the 155 V range) when 1.55 Vac is applied to the input BNC connector with the ATT switch turned off.

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Viewing Error Messages

The Err annunciator in the lower right corner indicates messages in the error queue.

Press [Error] to view errors in the error queue. You can also use the SCPI SYSTem:ERRor? query to view error messages.

Errors in the error queue are stored and retrieved on a first-in, first-out basis. Once an error has been read, either by remote command or from the front panel, it is cleared. The only exception is self-test errors, which cannot be cleared until the underlying condition is corrected.

If no errors are in the error queue, "Noerrors" appears when you press [Error].

See SCPI Error Messages for a list of error messages.

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Keysight AC6800B Series Operating and Service Guide

3 SCPI Programming Reference

Introduction to SCPI

Status System Overview

Command Quick Reference

Commands by Subystem

ABORt Subsystem CALibrate Subsystem CURRent Subsystem DISPlay Subsystem FETCh/MEASure Subsystem FREQuency Subsystem HCOPy Subsystem IEEE-488 Common Commands INITiate Subsystem LXI Subsystem OUTPut Subsystem SENSe Subsystem [SOURce:] Subsystem STATus Subsystem SYSTem Subsystem TRIGger Subsystem VOLTage Subsystem

Default Settings

SCPI Error Messages

3SCPI Programming Reference

Introduction to SCPI

Introduction

Keywords

Queries

Command Separators and Terminators

Syntax Conventions

Parameter Types

Device Clear

Typical Command Processing Times

Introduction

This manual describes instrument programming using Standard Commands for Programmable Instruments (SCPI) over LAN, USB, and GPIB (optional). Select the interface type from the front panel, and be sure to understand the SCPI syntax and functions before you send SCPI commands and queries.

The SCPI language is an ASCII-based programming language for test and measurement instruments. SCPI has two types of commands, common and subsystem.

IEEE-488.2 Common Commands

The IEEE-488.2 standard defines common commands that perform functions such as reset, self-test, and status operations. Common commands always begin with an asterisk ( *), are three characters long, and may include parameters. The command keyword is separated from the first parameter by a space.

Subsystem Commands

Subsystem commands perform specific instrument functions. They extend one or more levels below the root in a hierarchical structure, or tree. Associated commands are grouped together under a common node, thus forming subsystems. A portion of the OUTPut subsystem is shown below to illustrate the tree system. Note that the brackets around a keyword, such as in [:STATe], indicate an optional keyword.

:OUTPut

[:STATe] ON|1|OFF|0 :COUPling AC|DC|ACDC :PROTection :CLEar

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Keywords

Keywords, also referred to as headers, are instructions recognized by the instrument. Common commands are also keywords.

OUTPut is a root keyword, STATe, COUPling, and PROTection are second-level keywords, and CLEar are third-level keywords. Colons ( : ) separate the keyword levels.

The command syntax shows most commands (and some parameters) as amixture of upper- and lower-case letters. The upper-case letters indicate the abbreviated spelling for the command. For shorter program lines, you can send the abbreviated form. For better readability, send the long form.

In the above examples, OUTP and OUTPUT are both acceptable. You can use upper- or lower-case letters. Therefore, OUTPUT, outp, and OuTp are all acceptable. Other forms, such as OUT, will generate an error.

Queries

Following a keyword with a question mark (? ) turns it into a query (Example: VOLTage?, VOLTage:TRIGgered?). If a query contains parameters, place the question mark after the last keyword, before the parameters. Insert a space between the question mark and the first parameter.

You can query the value of most parameters. For example, to query the output voltage, send:

VOLTage?

You can also query the minimum or maximum allowable voltage:

VOLTage? MIN VOLTage? MAX

Wait for all of the results of a query to be returned before sending another command or query. Otherwise, a Query Interrupted error will occur and the unreturned data will be lost.

Command Separators and Terminators

Separators

Colons ( : ) separate keyword levels. Blank spaces separate command parameters from their corresponding keyword. If a command requires more than one parameter, a comma separates parameters. In the following example, the frequency (100), low frequency limit (90), and high frequency limit (110) are separated by commas. Note the space after the word FREQuency.

FREQuency 100,90,110

Semicolons ( ; )separate commands within the same subsystem. This lets you send several subsystem commands within the same message string. For example, the following command:

FREQuency 100,90,110;MODE FIXed

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is the same as sending the following commands:

FREQuency 100,90,110 FREQuency:MODE FIXed

You can also combine commands of different subsystems within a message string. In this case, you must use a colon to return the command parser to the root level in order to access another subsystem. For example, you could specify the frequency and turn on the output as follows:

FREQuency 100,90,110;:OUTPut ON

The colon after the semicolon returns the command parser to the root.

Terminators

A command stringmust terminate with a new line (<NL>)character. The IEEE-488 EOI (End-OrIdentify) message is interpreted as a <NL> character and can be used to terminate a command string in place of an <NL>. A carriage return followed by a new line (<CR><NL>) is also accepted. Command string termination always resets the SCPI command path to the root level.

Syntax Conventions

Triangle brackets ( < > ) indicate that a parameter. For example, in the command syntax DISPlay [:WINDow]:TEXT"<string>", the <string> parameter is inside triangle brackets. These brackets are not sent with the command string. For example, you could send DISPlay:WINDow:TEXT "Test in progress".

A vertical bar ( | ) separates multiple parameter choices for a given command string. For example, AC|DC|ACDC in the OUTPut:COUPling command indicates that you can specify AC, DC, or ACDC. The bar is not sent with the command string.

Square brackets ( [ ]) indicate that a keyword or parameter is optional. These brackets are not sent with the command string. If you donot specify a value for an optional parameter, the instrument ignores the parameter. In the DISPlay[:WINDow]:TEXT example above, the optional [:WINDow] level means that DISPlay:TEXT is the same as DISPlay:WINDow:TEXT.

Parameter Types

The SCPI language defines several data formats to be used in commands and queries.

Numeric Parameters

Commands that require numeric parameters will accept all commonly used decimal representations of numbers including optional signs, decimal points, and scientificnotation. If a command accepts only certain specific values, the instrument will automatically round the input numeric parameters to the accepted values. The following command requires a numericparameter for the voltage value:

[SOURce:]CURRent <value>|MINimum|MAXimum

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Note that special values for numeric parameters such as MINimumand MAXimumare also accepted. Instead of selecting a specific value for the voltage parameter, you can substitute MIN to set the voltage to its minimum allowable value, or MAX to set it to its maximum allowable value.

You can also optionally include the following engineering unit suffixes with numericparameters:

Parameter Default Unit

Voltage V

Current A

Wattage W

Apparent Power VA

Reactive Power VAR

Degrees DEG

Frequency HZ

You may also put the following prefixes before a unit of measure:

Prefix Meaning Number

U micro 1/1,000,000

M milli 1/1,000

K kilo 1,000

As with other SCPI keywords, both units and prefixes are case-insensitive. Thus, you could indicate millivolts as mv, mV, Mv, or MV.

Discrete Parameters

Discrete parameters specify settings that have a limited number of values (like IMMediate, EXTernal, or BUS). Like command keywords, they may have short and long forms. You can mix upper- and lowercase letters. Query responses always return the short form in upper-case letters. The following command requires a discrete parameter:

DISPlay:VIEW METER_VI|METER_VP|METER VIP

Boolean Parameters

Boolean parameters represent a single binary condition that is either true (1 or ON) or false (0 or OFF). A boolean query always returns 0 or 1. The following command requires a boolean parameter:

DISPlay ON|1|OFF|0

ASCII String Parameters

String parameters can contain virtually any ASCII characters. A string must begin and end with matching single (') or double (") quotation marks. To include the quote delimiter as part of the string, enter it twice without any characters in between. The following command uses a string parameter:

DISPlay:TEXT "Test in progress . . ."

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Arbitrary Block Program or Response Data

Definite-length block data <Block> allows any type of device-dependent data to be programmed or returned as a series of 8-bit binary data bytes. This is particularly useful for transferring large quantities of data or 8-bit extended ASCII codes.

Device Clear

Device Clear is an IEEE-488 low-level bus message that you can use to return the instrument to a responsive state. Different programming languages and IEEE-488 interface cards provide access to this capability through their own unique commands. The status registers, theerror queue, and all configuration states are left unchanged when aDevice Clear message is received.

Device Clear performs the following actions:

If a measurement is in progress, it is aborted.

The instrument returns to the trigger idle state.

The instrument's input and output buffers are cleared.

The instrument is prepared to accept a new command string.

The ABORt command is the recommended method to terminate an instrument operation.

Typical Command Processing Times

The table below documents some typical, average command processing times (milliseconds) for various commands and queries. This can help you determine the impact of some common SCPI commands on total test time.

The command processing time is the time until the next command is accepted. It does not include hardware response time.

Command GPIB

*CLS 5 6 Clear the status data.

*RCL 233 230 Recall the contents of a state storage location.

*RST 233 230 Perform a device reset.

*SAV 13 14 Save the current settings.

FREQuency 15 17 Set the AC output frequency.

MEASure:CURRent:AC? 333 333 Query the AC current.

MEASure:VOLTage:AC? 333 333 Query the AC voltage.

OUTPut OFF 19 23 Turn the output OFF.

OUTPut ON 9 11 Turn the output on.

VOLTage 16 18 Set the AC voltage.

[1]

USB Description

[1]

Using Keysight IO Libraries.

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Keysight Technologies AC6801B, AC6804B, AC6802B, AC6803B Operating And Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Notices

Copyright Notice

Manual Part Number

Edition

Published by

Warranty

Technology Licenses

U.S. Government Rights

Safety and Regulatory Information

General Information

Safety Warnings

Product Grounding

General Warnings

Environmental Warnings

Shock Hazard

Installation Warnings

Heavy Weight

Equipment Cautions

General Cautions

Installation Cautions

Operational Cautions

Moving Cautions

Safety Symbols

1 Getting Started

Before Installation or Use

Introduction to the Instrument

Instrument Ratings

Installing an Optional Interface Board

Rack Mounting

Connecting the Power Cord

Switchboard and Circuit Breaker Requirements

Quick Start

Interface Connections

Remote Interface Configuration

Making Output Power Connections

Voltage Ranges and Limits

Error Checking and Soft Limits

2 User Information

Welcome

Front Panel Menu Reference

General Front-Panel Organization

Selecting the Output Voltage Programming Source and Output Mode

Specifying Output Coupling

Programming AC Output

Programming DC Voltage

Setting Limit Values

Turning the Output On and Off

Storing and Retrieving Instrument States

Configuring Instrument Preferences

Calibrating from the Front Panel

Configuring Overcurrent Protection

Configuring Watchdog Protection

Configuring and Clearing Measurements

Using External Analog Control

Viewing Error Messages

Introduction to SCPI