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Keysight 6811B User Manual

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Keysight Models 6811B,
6812B, and 6813B AC
Power Solutions
User's Guide

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Summary of Contents for Keysight 6811B

  • Page 1 Keysight Models 6811B, 6812B, and 6813B AC Power Solutions User’s Guide...

  • Page 3: Warranty Information

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

  • Page 4: Safety Summary

    Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Keysight Technologies assumes no liability for the customer's failure to comply with these requirements.
  • Page 5 SAFETY SYMBOLS Direct current Alternating current Both direct and alternating current Three-phase alternating current Earth (ground) terminal Protective earth (ground) terminal Frame or chassis terminal Terminal is at earth potential. Used for measurement and control circuits designed to be operated with one terminal at earth potential. Terminal for Neutral conductor on permanently installed equipment Terminal for Line conductor on permanently installed equipment On (supply)

  • Page 6: Declaration Page

    Declares under sole responsibility that the product as originally delivered Product Names Single phase ac Power Source/Analyzer Model Numbers 6811B, 6812B, 6813B (and other customized products based upon the above) Product Options This declaration covers all options and customized products based on the above products.

  • Page 7: Acoustic Noise Information

    This document contains proprietary information protected by copyright. All rights are reserved. No part of this document may be photocopied, reproduced, or translated into another language without the prior consent of Keysight Technologies. The information contained in this document is subject to change without notice.

  • Page 8: Table Of Contents

    Table of Contents Warranty Information Safety Summary Declaration Page Acoustic Noise Information Printing History Table of Contents 1 GENERAL INFORMATION Document Orientation Earlier AC Source Models Safety Considerations Options and Parts Description Capabilities Front Panel/Remote Operation Steady-state Output Characteristic Peak Current/Dynamic Power Capability Peak Current Limit Peak Inrush Example RMS Current Limit Circuit...
  • Page 9 3 TURN-ON CHECKOUT Introduction Preliminary Checkout Using the Keypad Checkout Procedure In Case of Trouble Error Messages Line Fuse 4 FRONT PANEL OPERATION Introduction Front Panel Description System Keys Function Keys Immediate Action Keys Scrolling Keys Meter Display Keys Output Control Keys Protection and Status Control Keys Trigger and List Control Keys Entry Keys...
  • Page 10 Keysight Calibration Program Listing C ERROR MESSAGES Error Number List D LINE VOLTAGE CONVERSION Open the Unit Check the Jumper Wire (Model 6811B/6812B only) Check the Line Jumpers (all Models) Check the Power Transformer Connector (all Models) Close the Unit INDEX...

  • Page 12: General Information

    General Information Document Orientation This manual describes the operation of the 6811B/6812B/6813B AC Power Solutions. These Keysight units will be referred to as "ac sources" throughout this manual. The following documents are shipped with your ac source:  a Quick-Start Guide, to help you quickly get started using the ac source ...

  • Page 13: Earlier Ac Source Models

    With the exception of some minor readback specification differences, information in this manual also applies to the following earlier ac source models: Information about this model also applies to the following earlier models: 6811B 6811A AC Power Source/Analyzer Keysight Keysight...

  • Page 14: Description

    Keysight 6811B Line cord with NEMA 5-15P; 10 A, 220 V plug Keysight *Support rails (Keysight p/n 1494-0059) are required when rack mounting units with options 1CM and 1CP. Table 1-2. Operator Replaceable Parts Item Keysight Part Number Power cord assembly see "Options"...

  • Page 15: Capabilities

    1 - General Information The following model ac power sources are described in this User's Guide: Model Description 6811B 0-300 V rms; 375 VA (425 V peak; 40 A peak) Keysight 6812B 0-300 V rms; 750 VA (425 V peak; 40 A peak)

  • Page 16: Steady-State Output Characteristic

    Ac source operation is specified from 45 to 1000 Hz (see Appendix A). However, you can operate the unit at frequencies less that 45 Hz. The operating characteristics of the ac source at autput frequencies below 45 Hz are documented in Table A-3 of Appendix A. 424 V 285W (6811B) 575W (6812B) 1350W (6813B) Vrms...

  • Page 17: Peak Current/Dynamic Power Capability

    The ac source can generate peak currents that exceed the rms current capability of the unit. This not only applies when operating in ac mode, but also when programming output pulses in dc mode. Although the unit will generate peak output currents up to 40A ( 6811B/6812B) or 80A ( 6813B), the Keysight Keysight unit can only maintain this output for a limited time.
  • Page 18 General Information - 1 as voltage increases, the I setting needs to be decreased. ♦ peak as frequency increases, the I setting can be increased. ♦ peak as load resistance decreases, the I setting needs to be decreased. ♦ peak Note that the purpose of programming the I current is to prevent the unit from activating its internal peak...

  • Page 19: Rms Current Limit Circuit

    1 - General Information RMS Current Limit Circuit The output rms current limit is adjustable to any value within the range of the unit. If the load attempts to draw more current than the programmed limit, the output voltage is reduced to keep the rms current within the limit.

  • Page 20: Output Coupling

    General Information - 1 CAUTION: Programming the ac source output impedance into a load with a low impedance can cause output voltage instability, which may damage the ac source. Stability MUST be maintained when operating the ac source with programmable resistance or inductance.

  • Page 22: Installation

    When you receive your ac source, inspect it for any obvious damage that may have occurred during shipment. If there is damage, notify the shipping carrier and the nearest Sales and Support Office Keysight immediately. The list of Sales and Support Offices is at the back of this guide. Warranty Keysight information is printed in the front of this guide.

  • Page 23: Location

    Option 1CM or 1CP. Installation instructions are included with each rack mounting kit. Keysight ac sources also require instrument support rails in addition to the rack mount kit. Support rails are normally ordered with the cabinet and are not included with the rack mounting kits.

  • Page 24: Input Connections

    Refer to Table 1-1 for detailed information. For Model 6811B, refer to Figure 2-2 and connect the power cord to the IEC 320 connector on the rear of the unit. If your unit does not have this connector, refer to the procedure for models 6812B and 6813B.

  • Page 25: Output Connections

    7. POW ER SAFETY COVER 8. STRAIN RELIEF CONNECTOR Figure 2-3. Connecting the Power Cord (6812B, 6813B, and earlier 6811B units) Output Connections The power output terminal block has a floating output terminal connection and a floating neutral line for the return connection.

  • Page 26: Wire Considerations

    Installation - 2 Wire Considerations NOTE: To minimize the possibility of instability on the output, keep load leads as short as possible bundle or twist the leads tightly together to minimize inductance Current Ratings Fire Hazard To satisfy safety requirements, load wires must be large enough not to overheat when carrying the maximum short-circuit current of the ac source.
  • Page 27 2 - Installation  Connect the phase 1 (1) sense terminals to the side of the load that connects to the corresponding output terminal.  Connect the Neutral (COM) sense terminal connector to the neutral side of the load.  Twist and shield all signal wires to and from the sense connectors.

  • Page 28: Remote Sensing And Ovp Considerations

    Installation - 2 Remote Sensing and OVP Considerations In remote sense applications, the voltage drop in the load leads subtracts from the available load voltage (see "Remote Sensing Capability" in appendix A). As the ac source increases its output to overcome this voltage drop, the sum of the programmed voltage and the load-lead drop may exceed the ac source's maximum voltage rating.

  • Page 29: Controller Connections

    2 - Installation In example B, the FLT output of one unit is connected to the INH input of another unit. A fault condition in one of the units will disable all of them without intervention either by the controller or external circuitry.

  • Page 30: Rs-232 Interface

    The RS-232 connector is a DB-9, male connector. You can connect the ac source to any computer or terminal with a properly configured DB-25 connector. You can use a standard 24542G or 24542H Keysight interface cable. Table 2-2. RS-232 Connector...
  • Page 31 2 - Installation Hardware Handshake The RS-232 interface uses the DTR (data terminal ready) line as a holdoff signal to the bus controller. When DTR is true, the bus controller may send data to the ac source. When DTR goes false, the bus controller must stop sending data within 10 characters, and must not send any more data until DTR goes true again.

  • Page 32: Turn-On Checkout

    Turn-On Checkout Introduction Successful tests in this chapter provide a high degree of confidence that the ac source is operating properly. For verification tests, see appendix B. Complete performance tests are given in the Service Guide. NOTE: This chapter provides a preliminary introduction to the ac source front panel. See Chapter 4 for more details.

  • Page 33: Using The Keypad

    3 - Turn-On Checkout Using the Keypad (shift) Some of the front panel keys perform two functions, one labeled in black and the other in blue. You access the blue function by first pressing the blue shift key. Release the key after you press it. The Shift annunciator will be on, indicating that you have access to any key's shifted function.
  • Page 34 Turn-On Checkout - 3 SENSE 100 W Figure 3-1.Verification Connections Procedure Display Explanation Turn the unit on. Meter mode Meter mode is active and the Dis annunciator should be on. Press the Voltage key. VOLT 0.00 Display indicates the default settings. Press 1, 2, 0, Enter VOLT 120 Programs the output voltage to 120 Vrms.

  • Page 35: In Case Of Trouble

    3 - Turn-On Checkout Procedure Display Explanation Press , and CURR:LEV 5 Indicates the default output current limit setting. Shift Current Press Enter CURR:LEV .5 Sets the current limit to .5 amperes. The CC annunciator is on, indicating that the unit is in current limit mode and the light bulbs are dimmer because the output voltage has dropped in its attempt to limit output current.

  • Page 36: Line Fuse

    Turn-On Checkout - 3 Runtime Error Messages Under unusual operating conditions, the front panel display may show OVLD. This indicates that the output voltage or current is beyond the range of the meter readback circuit. If the front panel display indicates -- -- -- -- -- -- , a GPIB measurement is in progress.

  • Page 38: Front Panel Operation

    Front panel Operation Introduction Here is what you will find in this chapter:  a complete description of the front panel controls  front panel programming examples that describe: how to program the output voltage and frequency how to measure the output how to program the output pulses and lists how to trigger output changes Front Panel Description...
  • Page 39 4 - Front Panel Operation  14-character vacuum fluorescent display for showing programmed commands Display and measured values.  Annunciators light to indicate operating modes and status conditions: Annunciators 1 Phase 1 is being controlled or metered. The ac source output is in constant-voltage mode. The ac source output is in constant-current mode.

  • Page 40: System Keys

    Front Panel Operation - 4 System Keys Refer to the examples later in this chapter for more details on the use of these keys. SYSTEM Local Error Address Save Recall Figure 4-2. System Keys Shift This is the blue, unlabeled key, which is also shown as in this guide.

  • Page 41: Function Keys

    4 - Front Panel Operation Function Keys Refer to the examples later in this chapter for more details on the use of these keys. FUNCTION Harmonic Current Index Voltage Meter Output Phase Index Input Freq Status Shape Protect Phase Select Trigger List Trigger...

  • Page 42: Meter Display Keys

    Front Panel Operation - 4 Meter Display Keys Metering keys control the metering functions of the ac source. Meter Press this key to access the meter menu list. Display Measurement <reading>V <reading>Hz rms voltage and frequency (the default) <reading>V <reading>A rms voltage and rms current <reading>A <reading>Hz rms current and frequency (the default)

  • Page 43: Output Control Keys

    4 - Front Panel Operation Output Control Keys Output control keys control the output functions of the ac source. Voltage Press this key to access the voltage menu list. Display Command Function VOLT <value> Set immediate rms output voltage VOLT:T<value> Set triggered rms output voltage VOLT:M <char>...
  • Page 44 Front Panel Operation - 4 Shift Phase Press this key to access the phase menu list. Display Command Function PHASE <value> Set immediate output phase PHASE:T <value> Set triggered output phase PHASE:M <char> Select the phase mode (FIXED, STEP, PULSE or LIST) Shape Press this key to access the shape menu list.

  • Page 45: Protection And Status Control Keys

    4 - Front Panel Operation Protection and Status Control Keys The Protect and Status keys control the protection functions and status registers of the ac source. Refer to Chapter 4 of the Programming guide for more information on the status registers. Protect Press this key to access the protection menu list.

  • Page 46: Trigger And List Control Keys

    Front Panel Operation - 4 Trigger and List Control Keys The Trigger Control key controls output transient triggers. The List key controls the generation of output lists. A list can contain up to 100 points, each of which can specify an output change (or transient). Refer to Chapter 4 of the Programming Guide for more information about programming triggers and lists.

  • Page 47: Entry Keys

    4 - Front Panel Operation Entry Keys Refer to the examples later in this chapter for more details on the use of these keys. ENTRY Calibration Enter Clear Entry Figure 4-4. Entry Keys   These keys let you scroll through choices in a parameter list that apply to a specific command.

  • Page 48: Examples Of Front Panel Programming

    Front Panel Operation - 4 Examples of Front Panel Programming You will find these examples on the following pages: Setting the output voltage amplitude Setting the output frequency Setting the dc offset Setting a protection feature Clearing a protection feature Generating step, pulse, and list transients Programming trigger delays and phase synchronization Programming slew rates...

  • Page 49: Setting The Output Frequency

    4 - Front Panel Operation 2 - Setting the Output Frequency When you turn on the ac source, the default output frequency is a 60 Hz. Assuming the voltage output from example 1 is in effect (120 Vrms sinewave), change the frequency to 50 Hz as follows: Action Display You can set the frequency in the same way that you set the voltage:...

  • Page 50: Setting A Protection Feature

    Front Panel Operation - 4 4 - Setting a Protection Feature You can set the ac source to disable its output if it detects an overvoltage or overcurrent fault condition. Other automatic fault conditions (such as overtemperature) also will disable the output. Set the overcurrent protection feature as follows: Action Display...

  • Page 51: Using Transient Voltage Modes

    4 - Front Panel Operation Condition Action OV Condition Usually overvoltage conditions are caused by an external source forcing voltage into the output of the ac source. Remove this external source to eliminate the overvoltage. You can also program the overvoltage level to a higher value, or turn the overvoltage protection off. In other cases the output voltage may have exceeded the user-programmed overvoltage level.
  • Page 52 Front Panel Operation - 4 Step Transient The Voltage Menu lets you specify an alternate or triggered voltage level that the ac source will apply to the output when it receives a trigger. Because the default transient voltage level is zero volts, you must first enter a triggered voltage before you can trigger the ac source to change the output amplitude.
  • Page 53 4 - Front Panel Operation Action Display Press Voltage to access the Voltage Menu. On the Entry keypad, press 1 0 2 Enter. VOLT 102 Press  to access the triggered voltage command. On the Entry keypad, press 1 2 0 VOLT 120 Enter.

  • Page 54: Trigger Delays And Phase Synchronization

    Front Panel Operation - 4 Action Display Press Voltage to access the Voltage Menu. Then press  to access the voltage mode VOLT:M FIXED command. On the Entry keypad, press  or  to scroll through the mode parameters to obtain LIST VOLT:M LIST and press Enter.
  • Page 55 4 - Front Panel Operation Note that phase synchronization is referenced to an internal phase signal. The output of the unit is normally offset by 0 with respect to this internal reference. Because synchronized transient events always occur with respect to the internal reference, the output will normally be in phase with the value programmed for phase synchronization.

  • Page 56: Using Slew Rates To Generate Waveforms

    Front Panel Operation - 4 8 - Using Slew Rates to Generate Waveforms As shown in the previous examples there are a number of ways that you can generate custom waveforms. Programmable slew rates provide additional flexibility when customizing waveforms. The following figure illustrates how programmable slew rates are applied in the transient operating modes.
  • Page 57 4 - Front Panel Operation Example Display  This example uses the immediate slew rate. First, access the Voltage menu VOLT:M FIXED and press  until you access the mode command. On the Entry keypad, press  to obtain FIXED. Press Enter. Access the voltage menu and press ...

  • Page 58: Measuring Peak Inrush Current

    If necessary, reset the rms current and the peak current limits to higher values. (Keysight 6811B units have an rms current limit of 3.25 A. Keysight 6813B units have an rms current limit of 13 A and a peak current limit of 80 A) Synchronize the trigger source with a reference phase angle.

  • Page 59: 10 - Setting The Gpib Address And Rs-232 Parameters

    4 - Front Panel Operation 10 - Setting the GPIB Address and RS-232 Parameters Your ac source is shipped with the GPIB address set to 5 This address can only be changed from the front panel using the Address menu located under the Address key.

  • Page 60: A Specifications

    45 Hz to 1 kHz, in ac-coupled mode after a 30-minute warmup. Refer to table A-3 for ac source operation with output frequencies from dc to 45 Hz. Table A-1. Performance Specifications 1 Parameter Keysight 6811B Keysight 6812B Keysight 6813B Phases:...
  • Page 61 A - Specifications Table A-1. Performance Specifications (continued) Parameter Keysight 6811B/6812B/6813B Measurement Accuracy rms Current High Range (continued) 0.05% + 10 mA (45100 Hz): 0.05% + 15 mA (>100500 Hz): 0.05% + 30 mA (>500 Hz1 kHz): rms Current Low Range 0.05% + 1.5 mA...

  • Page 62: Supplemental Characteristics

    Table A-2 lists the supplemental characteristics, which are not warranted but are descriptions of typical performance determined either by design or type testing. Table A-2. Supplemental Characteristics Parameter Keysight 6811B Keysight 6812B Keysight 6813B ac Input Voltage Range (Vac): 87106 Vac (100 Vac nom.) 174220 Vac...
  • Page 63 A - Specifications Table A-2. Supplemental Characteristics (continued) Parameter Keysight 6811B Keysight 6812B Keysight 6813B Transient System  100 s Phase Synchronization: 200 s to 4.3 x 10 5 seconds Pulse Width Range:  0.01% Pulse/Dwell Timing Accuracy: Pulse Duty Cycle Range:...

  • Page 64: Operation Below 45 Hz

    Specifications - A Operation Below 45 Hz The following operating characteristics apply for output frequencies between 45Hz and 1Hz. Below 1 Hz, instantaneous values meet the dc specifications. The ac source output is set to: sinewave, dc coupled, real-time regulation, and is connected to a linear load. Table A-3.

  • Page 66: B Verification And Calibration

    Verification and Calibration Introduction This appendix includes verification and calibration procedures for the 6811B/6812B/6813B AC Keysight Power Solutions. Instructions are given for performing the procedures either from the front panel or from a controller over the GPIB. The verification procedures do not check all the operating parameters, but verify that the ac source is performing properly.

  • Page 67: Test Setup

    Table B-1. Equipment Required Equipment Characteristics Recommended Model Digital Voltmeter Resolution: 10 nV @ 1 V Keysight 3458A Readout: 8.5 digits Accuracy: >20 ppm 0.01 , 200 ppm, 10 Watts Current Monitor Guildline 7320/0.01 30:1 ratio, 50 ppm, 45 Hz to 1 kHz Ratio Transformer 20 , 10 A, 1800 Watts min.

  • Page 68: Performing The Verification Tests

    Verification and Calibration - B Performing the Verification Tests The following procedures assume you understand how to operate the ac source from the front panel as explained in Chapter 4. When performing the verification tests from a GPIB controller, you may have to consider the relatively slow settling times and slew rates of the ac source as compared to computer and system voltmeters.

  • Page 69: Dc Voltage Programming And Measurement Accuracy

    Turn on the ac source. In the Output menu, execute the *RST CC annunciator on command to reset the unit. Enable the output by pressing Output Output current at 2.5 (Keysight On/Off. Program the output as follows: 6811B) or 5.0 A (all other models).
  • Page 70 Verification and Calibration - B Table B-2. Keysight 6811B Verification Test Record Model Keysight 6811B Report No.____________ Date_____________ Test Description Minimum Recorded Results Maximum Specification Specification Voltage Programming and Measurement Accuracy 300 Vrms accuracy at 45 Hz 299.250 V _______V 300.750 V...
  • Page 71 Low Range _______A Iout +0.0040 A Iout 0.0125 A High Range _______A Iout +0.0125 A (Iout = calculated output current @ 60Hz) Table B-4. Keysight 6813B Verification Test Record Model Keysight ______________________ Report No.____________ Date_____________ Test Description Minimum Recorded Results Maximum...

  • Page 72: Performing The Calibration Procedure

    Verification and Calibration - B Performing the Calibration Procedure Table B-1 lists the equipment required for calibration. Figure B-1 shows the test setup. NOTE: You do not have to do a complete calibration each time. You may calibrate only the voltage or current and proceed to "Saving the Calibration Constants."...

  • Page 73: Front Panel Calibration

    B - Verification and Calibration Front Panel Calibration WARNING: LETHAL VOLTAGES. Ac sources can supply 424 V peak at their output. DEATH on contact may result if the output terminals or circuits connected to the output are touched when power is applied. These procedures must be performed by a qualified electronics technician or engineer trained on this equipment.

  • Page 74: Calibrating And Entering Dc Voltage Gain Values

    Verification and Calibration - B Press Shift Calibration, scroll to CAL DATA 0.00, and use the Entry CAL:DATA 0.00 keypad to enter the dc voltage value displayed on the DVM. Press Shift Calibration, scroll to the CAL LEV P1 command, use  to CAL:LEV P4 scroll to the P4 parameter, and press Enter.

  • Page 75: Calibrating The Ovp Trip Point

    B - Verification and Calibration Press Shift Calibration, scroll to the CAL LEV P1 command, use  to CAL:LEV P2 scroll to the P2 parameter, and press Enter. This selects the second calibration point. Press Shift Calibration, scroll to CAL DATA 0.00, and use the Entry CAL:DATA 0.00 keypad to enter the product of the transformer ratio times the ac voltage value displayed on the DVM.

  • Page 76: Calibrating And Entering Rms Current Measurement Values

    Verification and Calibration - B Calibrating and Entering rms Current Measurement Values Action Display Connect the DVM (ac rms mode), current shunt, and load resistor as shown in figure B-1 with S1 closed. Press Shift Calibration, scroll to the CAL CURR MEAS command, and CAL:CURR:MEAS press Enter.

  • Page 77: Changing The Calibration Password

    Figure B-2, Sheets 1 through 3, lists the calibration program. This program can be run on any controller operating under Keysight BASIC. The assumed power supply address is 705 and calibration password is 0. If required, change these parameters in the appropriate statements.
  • Page 78 Verification and Calibration - B ! AC Source calibration program Rev B.00.00 ASSIGN @Ac TO 705 PRINT TABXY(5,5),"This program will calibrate the 6811B/12B/13B AC Power Solutions." PRINT TABXY(5,7),"Equipment requirements are: Keysight3458A or equivalent DVM" PRINT TABXY(37,8),"0.01 ohm <200ppm Current Shunt"...
  • Page 79 B - Verification and Calibration OUTPUT @Ac;"CAL:LEV P1" WAIT 10 INPUT "Enter DC voltage reading from DVM",Dc_p1 PRINT TABXY(25,9),"Point 1 entered" OUTPUT @Ac;"CAL:DATA";Dc_p1 OUTPUT @Ac;"CAL:LEV P2" WAIT 10 INPUT "Enter DC voltage reading from DVM",Dc_p2 PRINT TABXY(25,11),"Point 2 entered" OUTPUT @Ac;"CAL:DATA";Dc_p2 OUTPUT @Ac;"CAL:LEV P3"...
  • Page 80 Verification and Calibration - B 1110 PRINT TABXY(15,9),"3. Connect the 3458A across the current shunt" 1120 PRINT TABXY(15,11),"4. Set the 3458A to AC rms VOLTS" 1130 PRINT TABXY(15,13),"5. Turn on the AC Source" 1140 1150 DISP "Press CONT to begin Current Program and Measurement calibration" 1160 PAUSE 1170...

  • Page 82: Error Number List

    Error Messages Error Number List This appendix gives the error numbers and descriptions that are returned by the ac source. Error numbers are returned in two ways:  Error numbers are displayed on the front panel  Error numbers and messages are read back with the SYSTem:ERRor? query. SYSTem:ERRor? returns the error number into a variable and returns two parameters: an NR1 and a string.

  • Page 83: C Error Messages

    C - Error Messages –161 Invalid block data [e.g., END received before length satisfied] –168 Block data not allowed –170 Expression error –171 Invalid expression –178 Expression data not allowed –2 –2 Execution Errors 00 through 99 (sets Standard Event Status Register bit #4) –200 Execution error [generic] –221...
  • Page 84 Error Messages - C Voltage selftest error, output 1 Voltage selftest error, output 2 Voltage selftest error, output 3 Current selftest error, output 1 Current selftest error, output 2 Current selftest error, output 3 Fan voltage failure Digital I/O selftest error Device-Dependent Errors 100 through 32767 (sets Standard Event Status Register bit #3) Outgrd not responding Front panel not responding...

  • Page 86: D Line Voltage Conversion

    LED is on, there is hazardous voltage inside the unit. Wait until the LED goes out before proceeding (this may take several minutes). Check the Jumper Wire (Model 6811B/6812B only)  Locate the line voltage jumper wire in the cutout at the side of the unit by the line cord (see Figure D-1).

  • Page 87: Close The Unit

    D - Line Voltage Conversion  Remove the inner cover.  Remove the screws securing the pc board behind the front panel (use a T15 Torx drive).  You need only to lift the board out of the way, you do not need to disconnect any cables. ...

  • Page 88: Index

    Index —A— —E— ac line conversion, 85 entry keys, 46  accessories, 12 , 46 airflow, 22 0 ... 9, 46 annunciators Clear Entry, 46 1, 38 E, 46 Enter, 46 Addr, 38 error messages, 34 Cal, 38 error numbers, 81 CC, 38 CV, 38 —F—...
  • Page 89 Index —L— Phase, 43 Pulse, 43 lethal voltages, 65 Shape, 43 line fuse Voltage, 42 output coupling replacing, 35 line voltage conversion, 85 ac, 19, 48 List, 50, 52 dc, 19, 48 load regulation, 18 output impedance <1 ohm, 18 load voltage drops, 25 location, 22 reactive, 18...
  • Page 90 Index interface cable, 30 equipment, 65 pinouts, 29 rms current accuracy, 68 setup, 66 —S— test record, 69 verification tests, 31 voltage control, 14 safety class, 12 voltage regulation safety summary, 3 real-time, 18 safety warning, 12 rms, 18 saving operating states, 58 self-test, 31 —W—...
  • Page 91 Keysight Sales and Support Offices For more information about Keysight Technologies test and measurement products, applications, services, and for a current sales office listing, visit our web site: http://www.keysight.com/find/tmdir You can also contact one of the following centers and ask for a test and measurement sales representative.

  • Page 92: Manual Updates

    All references to HP-IB have been changed to GPIB. 12/12/02 Additional information about power cords for model 6811B has been added to chapters 1 and 2. Corrections have been made to the rms current measurement accuracy verification procedure for all models in appendix B.
  • Page 93 Index This information is subject to change without notice. © Keysight Technologies 1995, 1997, 1998, 2014 Edition 5, December 2014 5962-0829 www.keysight.com...

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