Agilent Technologies 6812B, 6813B, 6811B manual DC Voltage Programming and Measurement Accuracy

Page 68

B - Verification and Calibration

DC Voltage Programming and Measurement Accuracy

CAUTION: Disconnect the ratio transformer for this test.

This test verifies the dc voltage programming, GPIB readback, and front panel meter functions. Values read back over the GPIB should be the same as those displayed on the front panel. Connect the negative terminal of the DVM to the COM output terminal to determine the ± dc offset voltages.

Action

Normal Result

1.Make sure the ac source is turned off. Connect the DVM directly to the sense terminals.

2.Turn on the ac source with no load. In the Output menu, execute the *RST command to reset the unit. Enable the output by pressing Output On/Off. Program the output voltage as follows:

VOLT 0, OUTP:COUP DC, OFFSET 425

3.Record DC voltage readings at the DVM and on the front panel display.

4.Program OFFSET −425

5.Record DC voltage readings at the DVM and on the front panel display.

Output voltage at +425 Vdc

Output current near 0.

Readings within specified dc voltage programming and readback limits.

Output voltage at −425 Vdc

Readings within specified dc voltage programming and readback limits.

RMS Current Accuracy Test

This test verifies the accuracy of the current measurement in rms detection mode.

Action

1.Turn off the ac source and connect the DVM, the 20 ohm load resistor and current shunt as shown in Figure B-1 with S1 closed. Connect the DVM across the current shunt.

2.Turn on the ac source. In the Output menu, execute the *RST command to reset the unit. Enable the output by pressing Output On/Off. Program the output as follows:

For Agilent 6811B:

VOLT 50, CURR:RANGE LOW, CURR:LEV 3.00

For all other models:

VOLT 50, CURR:RANGE LOW, CURR:LEV 5.00

3.Record the DVM voltage reading and calculate the rms current.

4.Program CURR:RANGE HIGH

5.Record the DVM voltage reading and calculate the rms current.

Normal Result

CCannunciator on Output current at 3.0 (Agilent

6811B)

or 5.0 A (all other models).

Readings within specified limits.

CCannunciator on Output current at 3.0 (Agilent

6811B)

or 5.0 A (all other models).

Readings within specified limits.

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Contents AC Power Solutions Agilent Models 6811B, 6812B, and 6813B User’s GuideWarranty Information CertificationSafety Summary GeneralSafety Symbols Declaration EMCAcoustic Noise Information Printing HistoryTable of Contents Performing the Calibration Procedure Entry Keys Examples of Front Panel ProgrammingIntroduction Performing the Verification TestsError Number List Line Voltage ConversionPage Location Document OrientationTopic Safety Considerations Options and PartsEarlier AC Source Models OptionsAgilent Part Number DescriptionOperator Replaceable Parts Model Description Front Panel/Remote OperationCapabilities Steady-state Output Characteristic Steady-state Output Characteristic in real-time modePeak Current/Dynamic Power Capability Peak Current LimitPeak Inrush Example Typical Peak Current Output CapacitiesIpeak setting Capacitance in μF 127 254RMS Current Limit Circuit Voltage RegulationOutput Impedance Real Time RegulationOutput Coupling Page Cleaning InspectionDamage Packaging Material Items SuppliedLocation Bench OperationRack Mounting Not block the fan exhaust at the rear of the unitInput Source and Line Fuse Installing the Power CordInput Connections Connecting the Power Cord Output ConnectionsWire Considerations Remote Sense ConnectionsVoltage Drops Current RatingsRemote Sense Connections Remote Sensing and OVP Considerations Trigger ConnectionsDigital Connections Gpib Connector Controller ConnectionsInterface Commands RS-232 ConnectorRS-232 Interface RS-232 Data FormatHardware Handshake Null Modem Interface Lines Response Data TerminatorIntroduction Preliminary CheckoutUsing the Keypad Checkout ProcedurePress 1, 2, 0, Enter Press Output On/OffPress Protect Press 1, 6, 0, EnterError Messages Selftest ErrorsPower-On Selftest Errors Case of TroubleRuntime Error Messages Line FuseIndicates May appear at runtimePage Front Panel Description Front Panel, Overall ViewAC+DC Dis lay Command Function System KeysScrolling Keys Function KeysImmediate Action Keys Display Command Function Meter Display KeysDisplay Measurement DisplayOutput Control Keys ListRST CLS Protection and Status Control KeysProtclear Trigger and List Control Keys InitimmedIMM AbortEntry Keys Through Are used for entering numeric values Is the decimalSet the output to 120 V rms as follows Setting the Output Voltage AmplitudeExamples of Front Panel Programming Setting the Output Frequency Setting the DC OffsetTo verify the output, use the meter menu ActionSetting a Protection Feature Overcurrent protection feature as followsBit Number Bit Weight Clearing Protection ConditionsUsing Transient Voltage Modes PulseStep Transient Pulse TransientVoltt Voltm StepList Transient Voltm PulseWidth DcycleTrigger Delays and Phase Synchronization Voltm Fixed List Count DwelDwel EOL Volt Volt EOL Step AutoSyncphas Initimmed Syncsour PhaseExample Display Using Slew Rates to Generate Waveforms Programming Slew RatesVoltm Fixed SlewStep Slewm SlewtSyncsour Phase Syncphas Measuring Peak Inrush CurrentCurrlev CurrpeakSetting the Gpib Address and RS-232 Parameters To configure the RS-232 interface, proceed as followsSaving and Recalling Operating States Action Display To set the Gpib address, proceed as followsSpecifications Table A-1. Performance Specifications1Table A-1. Performance Specifications Supplemental Characteristics Table A-2. Supplemental CharacteristicsTrig Out HC TTL output Trig In 10k pullup Operation Below 45 Hz Table A-3. Operation Below 45 HzPage Verification and Calibration Equipment RequiredRecommended Model Test SetupTable B-1. Equipment Required Turn-On Checkout Procedure Performing the Verification TestsAC Voltage Programming and Measurement Accuracy Action Normal ResultDC Voltage Programming and Measurement Accuracy RMS Current Accuracy TestVolt 0, Outpcoup DC, Offset Volt 50, Currrange LOW, CurrlevTable B-2. Agilent 6811B Verification Test Record Table B-3. Agilent 6812B Verification Test RecordDC Programming and Measurement Accuracy RMS Current Measurement AccuracyTable B-3 Table B-4. Agilent 6813B Verification Test RecordPerforming the Calibration Procedure Front Panel Calibration MenuCalibrating and Entering Voltage Offset Values Enable Calibration ModeFront Panel Calibration Callev P4 Calibrating and Entering DC Voltage Gain ValuesCalibrating and Entering AC rms Voltage Gain Values Calibrating the OVP Trip Point Calibrating and Entering rms Current ValuesCalibrating and Entering rms Current Measurement Values Calibrating the Output ImpedanceSaving the Calibration Constants OFFChanging the Calibration Password Calibration Error MessagesTable B-5. Gpib Calibration Error Messages Calibration Over the GpibFigure B-2. Calibration Program Listing Sheet 1 Figure B-2. Calibration Program Listing Sheet 2 Figure B-2. Calibration Program Listing Sheet 3 Page Error Number List Table C-1. Error NumbersError Messages Error Messages C Page Check the Jumper Wire Model Agilent 6811B/6812B only Check the Power Transformer Connector all ModelsOpen the Unit Check the Line Jumpers all ModelsClose the Unit Figure D-1. Line Voltage Conversion ComponentsIndex Index Index United States Latin America Canada Australia/New ZealandEurope Asia Pacific JapanManual Updates
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6812B, 6811B, 6813B specifications

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