Keysight Technologies AC6801B Service manual

Operating and
Service Guide
Keysight AC6800B Series
Basic AC Sources

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 Operating and 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
Notices
Copyright Notice
© Keysight Technologies, Inc. 2017
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

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
Notices

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:
lMust be informed of the relevant safety requirements.
lMust have read and understood the operating manual before using the equipment.
lMust 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 specific warnings 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 WARNING notice 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 out-
put 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 ground pin of the cord set 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.
Safety and Regulatory Information
6 Keysight AC6800B Series Operating and Service Guide

General Warnings
Do not use this product in any manner not specified by the manufacturer. The protective
features of this product may be impaired if it 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 AN ELECTRIC 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 PERSONNEL QUALIFIÉ.
CORRECTEMENT COUPER LE DISJONCTEUR ARMOIRE AVANT DE MANIPULER LES
CORDONS D'ALIMENTATION. POUR ÉVITER TOUT CHOC ÉLECTRIQUE, LE
CONDUCTEUR DE PROTECTION 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 off while 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 off and remove the power plug from an outlet or turn off the circuit
breaker of the 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 cord ground 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 N is 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 connecting the 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.
Safety and Regulatory Information
8 Keysight AC6800B Series Operating and Service Guide

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 packing materials. Damage
may result from vibrations or from the product falling during transportation.
Safety and Regulatory Information
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 from AC mains
when switch is off.
Caution, risk of electric shock
Caution, refer to accompanying documents
Earth ground terminal
ISM1-A
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.
ICES/NMB-001 This mark indicates product compliance with the Canadian Inter-
ference- Causing Equipment Standard.
The C-tick mark is a registered trademark of the Spectrum Man-
agement Agency of Australia. This signifies compliance with the Aus-
tralian 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 max-
imum concentration value (MCV), 40 Year EPUP.
ICES/NMB-
001
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.
Safety and Regulatory Information
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

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 packing and 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 box contents 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.
1Getting Started
14 Keysight AC6800B Series Operating and Service Guide

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
1Getting Started
16 Keysight AC6800B Series Operating and Service Guide

AC6803B
Keysight AC6800B Series Operating and Service Guide 17
1Getting Started

AC6804B
1Getting Started
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
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 pro-
cess. 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.
1Getting Started
20 Keysight AC6800B Series Operating and Service Guide