Agilent Technologies 6814B Voltage Programming and Measurement Accuracy, Action Normal Result

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Verification and Calibration - B

Voltage Programming and Measurement Accuracy

This test verifies the voltage programming, GPIB measurement, and front panel meter functions. Values read back over the GPIB should be the same as those displayed on the front panel.

Figure B-1 shows the setup. Measure the ac output voltage directly at the output terminals. If you are verifying a three-phase source, sart by verifying output phase 1.

Action

Normal Result

1.Make sure the ac source is turned off. Connect the DVM and ratio transformer as shown in the test setup in Figure B-1.

2.

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

*RST

 

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

 

3.

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

CV annunciator on.

 

limit to its maximum value.

Output voltage near 0.

 

 

Output current near 0.

4.

Enable the output by pressing Output On/Off.

Output voltage near 150 V.

5.

Record voltage readings at the DVM1 and on the front panel display.

Readings within low voltage

 

 

limits specified in table B-2.

6.

Program the output voltage to 300 volts.

Output voltage near 300 V.

7.

Record voltage readings at the DVM1 and on the front panel display.

Readings within high voltage

 

 

limits specified in table B-2.

8.

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

Readings within specified High

 

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

range limits (300 V/1 kHz).

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

RMS Current Readback Accuracy

This test verifies the current readback. Use the appropriate current shunt with the accuracy specified in table B-1. Use wire of sufficient size to carry the maximum rated current of the ac source (see table 2-1). If you are verifying a 3-phase source, start by verifying phase 1.

Action

1.Turn off the ac source. Connect the load resistor, current shunt, and the DVM across the current shunt as shown in Figure B-1. Use the

following load resistor values:

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

2.Turn on the ac source. In the Output menu, execute the *RST command to reset the unit to its factory default state.

3.Program the output voltage to 100 volts and set the current limit as follows:

Agilent 6814B = 10 A; Agilent 6834B = 5A; Agilent 6843A = 15A Then enable the output by pressing Output On/Off.

4.Record the DVM voltage reading and calculate the rms current. Divide the DVM reading by the current monitor resistor value. Record the front panel reading.

5.If you are verifying a 3-phase source , repeat steps 1 through 4 for phases 2 and 3. Press Phase Select to select the next phase.

Normal Result

*RST

CCannunciator on. Output current near 10 A for Agilent 6814B near 5 A for Agilent 6834B near 15A for Agilent 6843A

Difference between the measured output current and front panel readings are within specified limits.

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Contents User’s Guide AC Power Solutions Agilent Models 6814B, 6834B, and 6843ACertification Warranty InformationGeneral Safety SummarySafety Symbols EMC DeclarationPrinting History Acoustic Noise InformationTable of Contents Performing the Calibration Procedure Specifications Supplemental CharacteristicsError Number List Entry Keys Examples of Front Panel ProgrammingTopic Document OrientationLocation Options, Accessories, and User Replaceable Parts Safety ConsiderationsOption Description Agilent Part NumberCapabilities DescriptionModel Description Front Panel/Remote Operation Output CharacteristicRanges Output VA Capability AC Source Output Characteristic in real-time modePage Inspection CleaningDamage Packaging Material Items SuppliedBench Operation LocationRack Mounting Not block the fan exhaust at the rear of the unitInput Connections Installing the Power CordInput Source and Line Fuse Output Connections Output ConnectionsVoltage Drops Wire ConsiderationsCurrent Ratings Ampacity and Resistance of Stranded Copper ConductorsRemote Sense Connections Remote Sense ConnectionsDigital Connections Trigger ConnectionsOVP Considerations Output RatingController Connections Gpib ConnectorRS-232 Connector Interface CommandsRS-232 Interface RS-232 Data FormatNull Modem Interface Lines Response Data Terminator Hardware HandshakePreliminary Checkout IntroductionCheckout Procedure Using the KeypadVolt Procedure Display ExplanationProtclear Currlev VoltprotCurrprot Currprot OFFCase of Trouble Error MessagesLine Fuse Page Front Panel, Overall View Front Panel DescriptionAC+DC System Keys Display Command FunctionFunction Keys Annunciator On Phase SelectedImmediate Action Keys Meter Display Keys Scrolling KeysDisplay Measurement KBESSEL, RectDisplay Output Control KeysRST CLS Protection and Status Control KeysInitimmed Trigger and List Control KeysIMM AbortThrough Are used for entering numeric values Is the decimal Entry KeysProcedure for Single-Phase AC Sources Setting the Output Voltage AmplitudeExamples of Front Panel Programming Set the output to 120 V rms as followsPhase 3 to 235 Vrms Procedure for Three-Phase AC SourcesAction Display To verify the output, you can measure it as followsSetting a Protection Feature Setting the Output FrequencyOvercurrent protection feature as follows Step Transient Using Transient Voltage ModesVoltt Voltm StepVoltm Pulse Pulse TransientWidth DcycleAction List TransientVoltm Fixed Voltm List Count Volt EOL Step Auto Trigger Delays and Phase SynchronizationExample Display Syncsour PhaseSyncphas Initimmed Example Voltm Step Syncsour Phase Syncphas InitimmedProgramming Slew Rates Using Slew Rates to Generate WaveformsSlew Voltm FixedStep Slewm SlewtMeasuring Peak Inrush Current Syncsour Phase SyncphasRange CurrpeakTo configure the RS-232 interface, proceed as follows Setting the Gpib Address and RS-232 ParametersSaving and Recalling Operating States Action Display To set the Gpib address, proceed as followsAddress Noutputs Table A-1. Performance Specifications1 SpecificationsAgilent 6814B Agilent 6834B Agilent 6843A Table A-2. Supplemental Characteristics Supplemental CharacteristicsSpecifications a Page Equipment Required CharacteristicsRecommended Model Turn-On Checkout Procedure Test SetupPerforming the Verification Tests RMS Current Readback Accuracy Voltage Programming and Measurement AccuracyAction Normal Result Agilent 6814B Current Measurement Accuracy Performing the Calibration ProcedureAgilent 6834B Current Measurement Accuracy Agilent 6843A Current Measurement AccuracyFront Panel Calibration Enable Calibration ModeFront Panel Calibration Menu Calibrating the OVP trip point Calibrating and Entering Voltage Calibration ValuesCalibrating and Entering Current Calibration Values Calibrating the Output Impedance Agilent 6843A only Changing the Calibration PasswordSaving the Calibration Constants CalpassTable B-3. Gpib Calibration Error Messages Calibration Error MessagesCalibration Over the Gpib Agilent Calibration Program ListingFigure B-2. Calibration Program Listing Sheet 1 Figure B-2. Calibration Program Listing Sheet 2 Page Table C-1. Error Numbers Error Number ListError Messages Error Messages C Page Index Index Index Canada Australia/New Zealand United States Latin AmericaEurope Asia Pacific JapanManual Updates
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