Agilent Technologies 6813B, 6811B, 6812B manual Front Panel Calibration, Enable Calibration Mode

Page 72

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.

The following procedures assume you understand how to operate front panel keys (see Chapter 4).

Enable Calibration Mode

 

Action

Display

1.

Reset the unit by selecting Output, scrolling to the *RST command and

*RST

 

pressing Enter.

 

2.

To begin calibration press Shift Cal, scroll to CAL ON and press Enter.

CAL ON 0.0

3.Enter the calibration password from Entry keypad and press Enter. lf the password is correct the Cal annunciator will come on.

If CAL DENIED appears, then an internal switch has been set to prevent the calibration from being changed. (see the Service Manual.)

lf the password is incorrect, an error occurs. If the active password is lost, the calibration function can be recovered by setting an internal switch that defeats password protection. (see the Service Manual.)

CAL DENIED

OUT OF RANGE

Calibrating and Entering Voltage Offset Values

Connect the negative terminal of the DVM to the COM output terminal. Note that some calibration points are negative; be sure to enter the CAL:DATA as negative values when required.

Action

Display

4.Connect the DVM (dc volts mode) directly to the ac source. Do not connect the ratio transformer or load resistor shown in Figure B-1.

5.

Press Shift Calibration, scroll to the CAL VOLT OFFSET command, and

CAL:VOLT:OFFSET

 

press Enter.

 

6.

Press Shift Calibration, scroll to the CAL LEV P1 command, and press

CAL:LEV P1

 

Enter to select the first calibration point.

 

7.

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.

 

8.

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.

 

9.

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.

 

10.

Press Shift Calibration, scroll to the CAL LEV P1 command, use ° to

CAL:LEV P3

 

scroll to the P3 parameter, and press Enter.

 

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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 Document Orientation TopicLocation Safety Considerations Options and PartsEarlier AC Source Models OptionsDescription Operator Replaceable PartsAgilent Part Number Front Panel/Remote Operation CapabilitiesModel Description 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 unitInstalling the Power Cord Input ConnectionsInput Source and Line Fuse Connecting the Power Cord Output ConnectionsWire Considerations Remote Sense ConnectionsVoltage Drops Current RatingsRemote Sense Connections Trigger Connections Digital ConnectionsRemote Sensing and OVP Considerations 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 KeysFunction Keys Immediate Action KeysScrolling Keys Display Command Function Meter Display KeysDisplay Measurement DisplayOutput Control Keys ListRST Protection and Status Control Keys ProtclearCLS Trigger and List Control Keys InitimmedIMM AbortEntry Keys Through Are used for entering numeric values Is the decimalSetting the Output Voltage Amplitude Examples of Front Panel ProgrammingSet the output to 120 V rms as follows 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 AutoSyncsour Phase Example DisplaySyncphas Initimmed 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 RequiredTest Setup Table B-1. Equipment RequiredRecommended Model 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 MenuEnable Calibration Mode Front Panel CalibrationCalibrating and Entering Voltage Offset Values Calibrating and Entering DC Voltage Gain Values Calibrating and Entering AC rms Voltage Gain ValuesCallev P4 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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