Agilent Technologies N3280A instruction

B - Performance and Calibration Procedures

Figure B-2. Transient Waveform Voltage Priority

Current Priority Transient Recovery Time

This test measures the time for the output current to recover to within the specified value following a

±1V change in the output voltage. The test setup uses a 0.47∝F capacitor across the output of the generator to form an approximate 25∝s time constant with the 50 ohm output of the function generator.

NOTE: Turn off the output of the dc source before connecting the function generator.

Action

1.Turn off the dc source and connect the output as in Figure B-1f with the function generator across the HI and LO terminals. Remember to connect the capacitor (0.47∝F) close to the function generator. Keep all leads as short as possible.

2.Turn on the dc source and program the Current Priority mode. Program the current to zero amps.

Program the Function Generator as follows:

3. Frequency = 400Hz to 1kHzDuty cycle = 50% Wave shape = ±1V square wave.

Set the Tektronics current probe to measure current at 2mA/div.

4.Adjust the oscilloscope for a waveform similar to that in Figure B. The output current should return to within ±1mA in less than 90∝s. Check both loading and unloading transients by triggering on the positive and negative slope. Record the voltage at time “t” in the performance test record card under Current Priority Transient Response Current.

Program Commands

“OUTP OFF,(@1)”

“OUTP ON,(@1)” “SOUR:FUNC:MODE CURR,(@1)” “CURR 0,(@1)”

Loading

ttttTransient

v		t
	t	v
	t
	Unloading
	Transient

96

Image 96

Agilent Technologies N3280A Current Priority Transient Recovery Time, Figure B-2. Transient Waveform Voltage Priority

Contents

USER’S Guide Agilent Technologies Model N3280A Component Test DC Source Warranty Information Certification Safety Summary General Safety Symbols Declaration Acoustic Noise Information Printing History Table of Contents Types of Scpi Commands Scpi Command Completion Using Device ClearExternal References Gpib Capabilities of the DC Source Introduction to Scpi Scpi Programming Commands At a Glance Calibration Commands Measurement CommandsOutput Commands Status Commands System Commands Trigger CommandsCommon Commands Voltage Priority Tests Error Number List 103 Ripple and Noise TestsTransient Response Tests Page Safety Considerations Document Orientation Options and Accessories DescriptionRemote Programming Option Description Output Characteristics Voltage Priority Operation Output Characteristic Current Priority Current Priority Operation Measurement Characteristics Start of a Measurement Cleaning InspectionDamage Packaging Material Additional Items Location Bench OperationRack Mounting Do not block the fan exhaust at the rear of the unit Power Connections Connect the Power Cord Turn the unit off before connecting any wires Output ConnectionsOutputs 1 Current Ratings Voltage Drops and Lead ResistanceAmpacity and Resistance of Stranded Copper Conductors AWG No Maximum Ampacity Resistance at 20 deg. C Free air Coaxial Guard Connections Guard Connections for Test Fixtures External Trigger Connections Computer ConnectionsMaintaining Stability OVP Considerations Settings for Power Module Configuration Switch Switch SettingSwitch Setting Address Gpib Address Front Panel Description Checkout Procedure ProcedureExplanation Selftest Error Messages Runtime Error MessagesPower-On Selftest Errors Case of TroublePage External References Gpib Capabilities of the DC SourceGpib References Scpi References Types of Scpi Commands Introduction to ScpiConventions Used in This Guide Multiple Commands in a Message Including Common CommandsUsing Queries Moving Among Subsystems Types of Scpi Messages Message UnitChannel List Parameter Scpi Data Formats Scpi Command Completion Suffixes and MultipliersResponse Data Types Class Suffix Unit Unit with Multiplier Using Device Clear Outputstate ExamplePage Power-on Initialization IntroductionProgramming the Output Enabling the Output Output Mode Overvoltage ProtectionOutput Current Triggering Output Changes Oscillation ProtectionOutput Trigger Model Setting the Voltage and Current Trigger Levels Enabling the Output Trigger SystemSelecting the Output Trigger Source Making Measurements Generating Output TriggersAverage Measurements Power Line Cycles Measurement Samples and Time Interval Triggered Measurements Current RangesWindow Functions Returning All Measurement Data From the Data Buffer Measurement Trigger Model Enabling the Measurement Trigger SystemSelecting the Measurement Trigger Source Output Settling Delay Selecting the Sensing FunctionGenerating Measurement Triggers Pre-trigger and Post-trigger Data Acquisition Pre-trigger and Post-trigger Acquisition Programming the Status Registers DC Source Status Model Bit Configurations of Status Registers Operation Status Group Questionable Status Group Standard Event Status GroupStatus Byte Register MSS and RQS Bits Determining the Cause of a Service Interrupt Servicing Operation Status and Questionable Status Events Subsystem Commands Common CommandsProgramming Parameters Scpi Programming Commands At a Glance Subsystem Commands SyntaxSave new cal constants in non-volatile memory Mode mode, @list DELay FUNCtion Mode mode, @list VOLTageSets the output voltage in voltage priority mode Sets the triggered output voltage in voltage priority mode Common Commands Syntax ESE nSRE n Output Programming Parameters Calibration Commands CALibrateCURRentCALibrateCURRentLIMitPOSitive CALibrateCURRentLIMitNEGative CALibrateCURRentMEASure CALibratePASSword CALibrateDATACALibrateDATE CALibrateLEVel CALibrateSAVE CALibrateSTATeCALibrateVOLTage Measurement Commands FETChARRayCURRent? FETChARRayVOLTage?FETChCURRent? FETChVOLTage? Query Syntax MEASureARRayCURRent? MEASureARRayVOLTage? MEASureCURRent? MEASureVOLTage?SENSeCURRentRANGe Enter values greater than 0.015A SENSeFUNCtion SENSeSWEepNPLCyclesSENSeSWEepOFFSetPOINts Query Syntax SENSeFUNCtion? @channel list SENSeSWEepPOINts SENSeSWEepTINTervalSENSeWINDow Output Commands OUTPutOUTPutOSCProtect OUTPutPROTectionCLEar Default Suffix SOURceCURRentIMMediate SOURceCURRentTRIGgeredSOURceCURRentLIMitIMMediate SOURceCURRentLIMitTRIGgered SOURceCURRentLIMitBWIDth SOURceDELay SOURceDELayMODESOURceCURRentMODE SOURceCURRentLIMitMODE SOURceFUNCtionMODE SOURceVOLTageALCBWIDthSOURceVOLTageIMMediate SOURceVOLTageTRIGgered Query Syntax SOURceFUNCMODE? @channel list SOURceVOLTageMODE SOURceVOLTagePROTectionSTATeQuery Syntax SOURceVOLTagePROTectionSTATe? @channel list NR10 or Status Commands STATusOPERationENABleBit Configuration of Operation Status Registers STATusOPERationEVENt? STATusPRESet Parameters Preset ValueCommand Syntax STATusPRESet Parameters None Examples STATusOPERationNTR STATusOPERationPTR STATusQUEStionableENABle Query Syntax STATusQUEStionableENABle? @channel listSTATusQUEStionableCONDition? STATusQUEStionableNTR STATusQUEStionablePTR System Commands SYSTemERRor?SYSTemVERSion? Trigger Commands ABORtINITiateNAME TRIGgerACQuire TRIGgerACQuireSOURce TRIGgerTRANsientSOURceTRIGgerTRANsient RST Value Common Commands Command Syntax *CLS Parameters NoneParameters Power-On Value Examples Bit Configuration of Standard Event Status Enable Register Field Information ExampleQuery Syntax *OPT? Returned Parameters Aard Power-on Value RST Settings Bit Configuration of Status Byte Register Query Syntax TST? Returned Parameters NR1 Table A-1. Specifications Table A-2 Supplemental Characteristics Output Common Mode SafetyDimensions Weight Figure A-1. Output Impedance Graphs all outputs Equipment Required Performance & Verification Tests Measurement Techniques Test Setup Electronic LoadProgramming Program Commands Voltage Priority TestsVoltage Programming and Readback Accuracy Positive Current Limit +CL Action Program Commands Negative Current Limit -CL Current Priority Tests Current Programming and Readback Accuracy Load Effect Tests Voltage Priority, Constant Voltage Load Effect Voltage Priority, +Current Limit Load Effect Voltage Priority, -Current Limit Load Effect Test Source Effect Tests Current Priority Constant Current TestVoltage Priority, Constant Voltage Source Effect Voltage Priority, +Current Limit Source Effect Voltage Priority, -Current Limit Source Effect Current Priority, Constant Current Source Effect Ripple and Noise Tests Voltage Priority Ripple and Noise Voltage Priority, Transient Recovery Time Transient Response TestsCurrent Priority Ripple and Noise Current Priority Transient Recovery Time Figure B-2. Transient Waveform Voltage Priority Performance Test Equipment Form Figure B-3. Transient Waveform Current Priority Performance Test Record Form Performing the Calibration Procedure Enable Calibration Mode Negative Current Limit Calibration Positive Current Limit Calibration5A Range Current Measurement Calibration 100 15mA Range Current Measurement Calibration Saving the Calibration Constants101 Changing the Calibration Password Calibration Error MessagesTable B-3. Gpib Calibration Error Messages Error Meaning Error Number List Table C-1. Error Numbers103 Error Messages 104 Error Messages C 105Page Line Voltage Selection 107Page Earlier Version Output Connectors Mating Connector Part NumbersRear Panel Pinout Assignments CHG-2010-J01010-KEPPage Index 111 Index 112 113 Scpi 114 United States Latin America Canada Australia/New ZealandEurope Asia Pacific Japan Manual Updates