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

Models: 6811B 6813B

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

Contents

AC Power Solutions Agilent Models 6811B, 6812B, and 6813B Update AprilUser’s Guide For instruments with Serial Numbers Agilent 6811B US38390101-upWarranty Information WARRANTYLIMITATION OF WARRANTY CERTIFICATIONSafety Summary BEFORE APPLYING POWERWARNING LETHAL VOLTAGES GENERALSAFETY SYMBOLS Declaration Page DECLARATION OF CONFORMITYDecember Acoustic Noise InformationPrinting History 1 GENERAL INFORMATION Table of Contents2 INSTALLATION A SPECIFICATIONS 3 TURN-ON CHECKOUT4 FRONT PANEL OPERATION B VERIFICATION AND CALIBRATIONC ERROR MESSAGES D LINE VOLTAGE CONVERSIONINDEX Changing the Calibration PasswordPage General Information Document OrientationTopic LocationSafety Considerations Options and PartsEarlier AC Source Models Information about this current modelDescription Table 1-2. Operator Replaceable PartsAgilent Part Number Figure 1-1. AC Source Functional ElementsFront Panel/Remote Operation CapabilitiesModel DescriptionSteady-state Output Characteristic Figure 1-2. Steady-state Output Characteristic in real-time modePeak Current/Dynamic Power Capability Peak Current LimitPeak Inrush Example Agilent 6813BFigure 1-3. Peak Inrush Current Example Ipeak settingCapacitance in μF RMS Current Limit Circuit Voltage RegulationOutput Impedance Real Time RegulationOutput Coupling Page Installation CleaningPower Cord Digital connectorObtain adequate help when moving or mounting the unit in the rack Figure 2-1. Outline DiagramLocation Bench OperationInstalling the Power Cord Figure 2-2. Power Cord Plug ConfigurationsInput Connections Input Source and Line FuseFigure 2-4. Output Connections Figure 2-3. Connecting the Power CordOutput Connections Wire Considerations Remote Sense ConnectionsVoltage Drops Current RatingsFigure 2-5. Remote Sense Connections Remote Sensing and OVP Considerations Trigger ConnectionsDigital Connections Figure 2-6. FLT/INH Examples GPIB ConnectorController Connections Interface Commands RS-232 ConnectorTable 2-2. RS-232 Connector RS-232 InterfaceHardware Handshake Figure 2-7. Null Modem Interface Lines Response Data TerminatorPreliminary Checkout Turn-On CheckoutIntroduction Using the Keypad Checkout ProcedureProcedure Figure 3-1.Verification ConnectionsExplanation Press 1, 2, 0, EnterError Messages Selftest ErrorsTable 3-1. Power-On Selftest Errors In Case of TroubleRuntime Error Messages Line Fuseindicates may appear at runtimePage Front panel Operation Front Panel DescriptionFigure 4-1. Front Panel, Overall View Introductionϕ Display κ Annunciators λ Voltage/ Frequency ν Line ο System Keys π Function Keys θ Entry KeysAC+DC Annunciators light to indicate operating modes and status conditionsCommand Function System KeysFigure 4-2. System Keys Dis layFunction Keys Immediate Action KeysScrolling Keys Figure 4-3. Function KeysMeter Display Keys DisplayMeasurement Command FunctionOutput Control Keys Command FunctionCommand Function Command FunctionCommand Function Command FunctionCommand Function Command FunctionProtection and Status Control Keys Command Function4 - Front Panel Operation DisplayTrigger and List Control Keys Command FunctionFront Panel Operation DisplayEntry Keys Figure 4-4. Entry Keysthrough are used for entering numeric valuesSet the output to 120 V rms as follows 1 - Setting the Output Voltage AmplitudeExamples of Front Panel Programming 2 - Setting the Output Frequency 3 - Setting the DC Offset4 - Setting a Protection Feature overcurrent protection feature as followsBit Weight 5 - Clearing Protection Conditions6 - Using Transient Voltage Modes Step Transient Pulse TransientFigure 4-5. Pulse Transients Trigger count = 120Vrms 102Vrms 83.3ms 250msEnter List TransientFigure 4-6. List Transients 7 - Trigger Delays and Phase Synchronization Figure 4-7. Trigger Delays and Phase Synchronization 4 - Front Panel OperationThen press Trigger Control and Enter, followed by Shift Trigger Then press Trigger Control and Enter, followed by Shift Trigger8 - Using Slew Rates to Generate Waveforms Figure 4-8. Programming Slew RatesThen press Trigger Control and Enter, followed by Shift Trigger 4 - Front Panel OperationThen press Trigger Control and Enter, followed by Shift Trigger 9 - Measuring Peak Inrush Current Press Trigger Control and Enter10 - Setting the GPIB Address and RS-232 Parameters 11 - Saving and Recalling Operating StatesTable A-1. Performance Specifications1 SpecificationsSpecifications A - Specifications Table A-1. Performance Specifications continuedTable A-2. Supplemental Characteristics Supplemental CharacteristicsSpecifications - A Table A-2. Supplemental Characteristics continued A - SpecificationsOperation Below 45 Hz Table A-3. Operation Below 45 HzSpecifications - A Real Power wattsPage Introduction Verification and CalibrationEquipment Required Test Setup Figure B-1. Verification & Calibration Test SetupB - Verification and Calibration Table B-1. Equipment RequiredAC Voltage Programming and Measurement Accuracy Turn-On Checkout ProcedurePerforming the Verification Tests DC Voltage Programming and Measurement Accuracy RMS Current Accuracy TestVerification and Calibration - B Table B-2. Agilent 6811B Verification Test RecordTable B-3. Agilent 6812B Verification Test Record B - Verification and Calibration Table B-3 continuedTable B-4. Agilent 6813B Verification Test Record Performing the Calibration Procedure Front Panel Calibration MenuCommand Function DisplayCalibrating and Entering Voltage Offset Values Enable Calibration ModeFront Panel Calibration Verification and Calibration - B Calibrating and Entering DC Voltage Gain ValuesCalibrating and Entering AC rms Voltage Gain Values Calibrating the OVP Trip Point Calibrating and Entering rms Current ValuesSaving the Calibration Constants Calibrating and Entering rms Current Measurement ValuesCalibrating the Output Impedance Changing the Calibration Password Calibration Error MessagesTable B-5. GPIB Calibration Error Messages Calibration Over the GPIBFigure B-2. Calibration Program Listing Sheet 1 of Verification and Calibration - BRev B.00.00 TABXY5,7,EquipmentFigure B-2. Calibration Program Listing Sheet 2 of B - Verification and CalibrationFigure B-2. Calibration Program Listing Sheet 3 of Verification and Calibration - BPage Table C-1. Error Numbers Error MessagesError Number List C - Error Messages Error Messages - C Page Check the Jumper Wire Model Agilent 6811B/6812B only Check the Power Transformer Connector all ModelsLine Voltage Conversion Open the UnitClose the Unit Figure D-1. Line Voltage Conversion ComponentsIndex Index Index Agilent Sales and Support Offices United StatesLatin America CanadaAll references to HP-IB have been changed to GPIB Manual Updates4/15/00 All references to HP have been changed to Agilent