Agilent Technologies N3280A Voltage Priority Tests, Voltage Programming and Readback Accuracy

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B - Performance and Calibration Procedures

Voltage Priority Tests

Voltage Programming and Readback Accuracy

These tests verify that the voltage programming and GPIB readback functions are within specifications.

Action

1.Reset the dc source and connect a DVM as shown in Figure B-1a. Connect the DVM directly across the HI and LO sense terminals. (*RST resets the dc source to its default settings with the output off.)

2.Turn on the dc source and program the current limit to 0.5125A. Measure the output voltage and current.

3.Set the DVM to the 10V range, and record the output voltage reading. The DVM reading and measurement query result should be within the limits specified in the performance test record card under Voltage Priority Programming Accuracy @0V and Readback Accuracy @0V. (The current measurement query result should be approximately zero.)

4.Program the output voltage to full-scale positive output. Measure the output voltage.

5.Record the output voltage reading on the DVM. The DVM reading should be within the limits specified in the test record card under Voltage Priority Programming Accuracy @ +10V. The difference between the DVM reading and the measurement query result should be within the limits specified under Readback Accuracy @ +10V.

6.Program the output voltage to full-scale negative output. Measure the output voltage.

7.Record the output voltage reading on the DVM. The DVM reading should be within the limits specified in the test record card under Voltage Priority Programming Accuracy @ -10V. The difference between the DVM reading and the measurement query result should be within the limits specified under Readback Accuracy @ -10V.

Positive Current Limit (+CL)

Action

1.Reset the dc source and connect an ammeter directly across the HI and LO terminals as shown in Figure B-1a.

(*RST resets the dc source to its default settings with the output off.)

2.Turn on the dc source and program the output voltage to 10 volts. (The default output current limit is set to 1mA.)

3.Set the ammeter to the 1mA range, and record the output current reading on the ammeter. The ammeter reading should be within the limits specified in the performance test record card under Voltage Priority Programming Accuracy + 1mA Current limit.

4.Program the output current limit to 0.5A. Measure the output current.

Program Commands

“*RST”

“OUTP ON,(@1)” “CURR:LIM 0.5125,(@1)” “MEAS:VOLT? (@1)” “MEAS:CURR? (@1)”

“VOLT 10,(@1)” “MEAS:VOLT? (@1)”

“VOLT -10,(@1)” “MEAS:VOLT? (@1)”

Program Commands

“*RST”

“OUTP ON,(@1)” “VOLT 10,(@1)”

“CURR:LIM 0.5,(@1)” “MEAS:CURR? (@1)”

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Contents USER’S Guide Agilent Technologies Model N3280A Component Test DC SourceWarranty Information CertificationSafety Summary GeneralSafety Symbols Declaration Acoustic Noise Information Printing HistoryTable of Contents External References Types of Scpi CommandsScpi Command Completion Using Device Clear Gpib Capabilities of the DC Source Introduction to ScpiOutput Commands Scpi Programming Commands At a Glance Calibration CommandsMeasurement Commands Status CommandsCommon Commands System CommandsTrigger Commands Voltage Priority TestsTransient Response Tests Error Number List 103Ripple and Noise Tests Page Safety Considerations Document OrientationRemote Programming Options and AccessoriesDescription Option DescriptionOutput Characteristics Voltage Priority OperationOutput Characteristic Current Priority Current Priority OperationMeasurement Characteristics Start of a Measurement Damage Packaging Material CleaningInspection Additional ItemsRack Mounting LocationBench Operation Do not block the fan exhaust at the rear of the unitPower Connections Connect the Power CordOutputs 1 Turn the unit off before connecting any wiresOutput Connections Ampacity and Resistance of Stranded Copper Conductors Current RatingsVoltage Drops and Lead Resistance AWG No Maximum Ampacity Resistance at 20 deg. C Free airCoaxial Guard Connections Guard Connections for Test FixturesMaintaining Stability External Trigger ConnectionsComputer Connections OVP ConsiderationsSwitch Setting Address Settings for Power Module Configuration SwitchSwitch Setting Gpib AddressFront Panel Description Explanation Checkout ProcedureProcedure Power-On Selftest Errors Selftest Error MessagesRuntime Error Messages Case of TroublePage Gpib References External ReferencesGpib Capabilities of the DC Source Scpi ReferencesConventions Used in This Guide Types of Scpi CommandsIntroduction to Scpi Using Queries Multiple Commands in a MessageIncluding Common Commands Moving Among SubsystemsChannel List Parameter Types of Scpi MessagesMessage Unit Scpi Data Formats Response Data Types Scpi Command CompletionSuffixes and Multipliers Class Suffix Unit Unit with MultiplierUsing Device Clear Outputstate ExamplePage Programming the Output Power-on InitializationIntroduction Enabling the OutputOutput Current Output ModeOvervoltage Protection Output Trigger Model Triggering Output ChangesOscillation Protection Selecting the Output Trigger Source Setting the Voltage and Current Trigger LevelsEnabling the Output Trigger System Average Measurements Making MeasurementsGenerating Output Triggers Power Line Cycles Measurement Samples and Time IntervalWindow Functions Triggered MeasurementsCurrent Ranges Returning All Measurement Data From the Data BufferSelecting the Measurement Trigger Source Measurement Trigger ModelEnabling the Measurement Trigger System Generating Measurement Triggers Output Settling DelaySelecting the Sensing Function Pre-trigger and Post-trigger Data Acquisition Pre-trigger and Post-trigger AcquisitionProgramming the Status Registers DC Source Status ModelBit Configurations of Status Registers Operation Status GroupStatus Byte Register Questionable Status GroupStandard Event Status Group MSS and RQS BitsDetermining the Cause of a Service Interrupt Servicing Operation Status and Questionable Status EventsProgramming Parameters Subsystem CommandsCommon Commands Save new cal constants in non-volatile memory Scpi Programming Commands At a GlanceSubsystem Commands Syntax Sets the output voltage in voltage priority mode Mode mode, @list DELayFUNCtion Mode mode, @list VOLTage Sets the triggered output voltage in voltage priority modeSRE n Common Commands SyntaxESE n Output Programming ParametersCALibrateCURRentLIMitPOSitive CALibrateCURRentLIMitNEGative Calibration CommandsCALibrateCURRent CALibrateCURRentMEASureCALibrateDATE CALibratePASSwordCALibrateDATA CALibrateLEVelCALibrateVOLTage CALibrateSAVECALibrateSTATe FETChCURRent? FETChVOLTage? Measurement CommandsFETChARRayCURRent? FETChARRayVOLTage? Query SyntaxSENSeCURRentRANGe MEASureARRayCURRent? MEASureARRayVOLTage?MEASureCURRent? MEASureVOLTage? Enter values greater than 0.015ASENSeSWEepOFFSetPOINts SENSeFUNCtionSENSeSWEepNPLCycles Query Syntax SENSeFUNCtion? @channel listSENSeWINDow SENSeSWEepPOINtsSENSeSWEepTINTerval OUTPutOSCProtect Output CommandsOUTPut OUTPutPROTectionCLEarSOURceCURRentLIMitIMMediate SOURceCURRentLIMitTRIGgered Default SuffixSOURceCURRentIMMediate SOURceCURRentTRIGgered SOURceCURRentLIMitBWIDthSOURceCURRentMODE SOURceCURRentLIMitMODE SOURceDELaySOURceDELayMODE SOURceVOLTageIMMediate SOURceVOLTageTRIGgered SOURceFUNCtionMODESOURceVOLTageALCBWIDth Query Syntax SOURceFUNCMODE? @channel listQuery Syntax SOURceVOLTagePROTectionSTATe? @channel list SOURceVOLTageMODESOURceVOLTagePROTectionSTATe NR10 orBit Configuration of Operation Status Registers Status CommandsSTATusOPERationENABle STATusOPERationEVENt?Command Syntax STATusPRESet Parameters None Examples STATusPRESetParameters Preset Value STATusOPERationNTR STATusOPERationPTRSTATusQUEStionableCONDition? STATusQUEStionableENABleQuery Syntax STATusQUEStionableENABle? @channel list STATusQUEStionableNTR STATusQUEStionablePTRSYSTemVERSion? System CommandsSYSTemERRor? INITiateNAME Trigger CommandsABORt TRIGgerACQuireTRIGgerTRANsient TRIGgerACQuireSOURceTRIGgerTRANsientSOURce RST ValueParameters Power-On Value Examples Common CommandsCommand Syntax *CLS Parameters None Bit Configuration of Standard Event Status Enable RegisterQuery Syntax *OPT? Returned Parameters Aard Field InformationExample Power-on Value RST SettingsBit Configuration of Status Byte Register Query Syntax TST? Returned Parameters NR1Table A-1. Specifications Table A-2 Supplemental Characteristics Dimensions Output Common ModeSafety WeightFigure A-1. Output Impedance Graphs all outputs Equipment Required Performance & Verification Tests Measurement TechniquesProgramming Test SetupElectronic Load Voltage Programming and Readback Accuracy Program CommandsVoltage Priority Tests Positive Current Limit +CLAction Program Commands Negative Current Limit -CLCurrent Priority Tests Current Programming and Readback AccuracyLoad Effect Tests Voltage Priority, Constant Voltage Load EffectVoltage Priority, +Current Limit Load Effect Voltage Priority, -Current Limit Load Effect TestVoltage Priority, Constant Voltage Source Effect Source Effect TestsCurrent Priority Constant Current Test Voltage Priority, +Current Limit Source Effect Voltage Priority, -Current Limit Source EffectCurrent Priority, Constant Current Source Effect Ripple and Noise Tests Voltage Priority Ripple and NoiseCurrent Priority Ripple and Noise Voltage Priority, Transient Recovery TimeTransient Response Tests Current Priority Transient Recovery Time Figure B-2. Transient Waveform Voltage PriorityPerformance Test Equipment Form Figure B-3. Transient Waveform Current PriorityPerformance Test Record Form Performing the Calibration Procedure Enable Calibration Mode5A Range Current Measurement Calibration Negative Current Limit CalibrationPositive Current Limit Calibration 100101 15mA Range Current Measurement CalibrationSaving the Calibration Constants Table B-3. Gpib Calibration Error Messages Changing the Calibration PasswordCalibration Error Messages Error Meaning103 Error Number ListTable C-1. Error Numbers Error Messages 104Error Messages C 105Page Line Voltage Selection 107Page Rear Panel Pinout Assignments Earlier Version Output ConnectorsMating Connector Part Numbers CHG-2010-J01010-KEPPage Index 111Index 112113 Scpi114 Europe Asia Pacific United States Latin AmericaCanada Australia/New Zealand JapanManual Updates
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