Introduction, Programming the Output | Agilent Technologies N3280A

5

Programming the DC Source

Introduction

This chapter contains examples on how to program your dc source. Simple examples show you how to program:

Koutput voltage and current functions

Kinternal and external triggers

Kmeasurement functions

Kthe status and protection functions

NOTE: The examples in this chapter show which commands are used to perform a particular function, but do not show the commands being used in any particular programming environment.

Programming the Output

Power-on Initialization

When the dc source is first turned on, it wakes up with the output state set to OFF. In this state the output voltage is set to 0. The following commands are given implicitly at power-on:

*RST	*SRE	0	STAT:PRES
*CLS	*ESE	0

*RST is a convenient way to program all parameters to a known state. Refer to the Common Commands section in chapter 6 for a complete description of the above commands.

Enabling the Output

To enable all four outputs, use the command:

OUTP ON,(@1:4)

or OUTP ON,(@1,2,3,4)

To enable only outputs 1 and 3 use the command.

OUTP ON,(@1,3)

Output Voltage

The output voltage is controlled with the VOLTage command. To set all four outputs to 5 volts, use:

VOLT 5,(@1:4)

The maximum output voltage that can be programmed can be queried with:

VOLT? MAX,(@<channel list>)

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Agilent Technologies N3280A manual Introduction, Programming the Output, Power-on Initialization, Enabling the Output

Contents

Agilent Technologies Model N3280A Component Test DC Source USER’S Guide Certification Warranty Information General Safety Summary Safety Symbols Declaration Printing History Acoustic Noise Information Table of Contents Gpib Capabilities of the DC Source Introduction to Scpi Types of Scpi CommandsScpi Command Completion Using Device Clear External References Status Commands Scpi Programming Commands At a Glance Calibration CommandsMeasurement Commands Output Commands Voltage Priority Tests System CommandsTrigger Commands Common Commands Error Number List 103 Ripple and Noise TestsTransient Response Tests Page Document Orientation Safety Considerations Option Description Options and AccessoriesDescription Remote Programming Voltage Priority Operation Output Characteristics Current Priority Operation Output Characteristic Current Priority Measurement Characteristics Start of a Measurement Additional Items CleaningInspection Damage Packaging Material Do not block the fan exhaust at the rear of the unit LocationBench Operation Rack Mounting Connect the Power Cord Power Connections Turn the unit off before connecting any wires Output ConnectionsOutputs 1 AWG No Maximum Ampacity Resistance at 20 deg. C Free air Current RatingsVoltage Drops and Lead Resistance Ampacity and Resistance of Stranded Copper Conductors Guard Connections for Test Fixtures Coaxial Guard Connections OVP Considerations External Trigger ConnectionsComputer Connections Maintaining Stability Gpib Address Settings for Power Module Configuration SwitchSwitch Setting Switch Setting Address Front Panel Description Checkout Procedure ProcedureExplanation Case of Trouble Selftest Error MessagesRuntime Error Messages Power-On Selftest ErrorsPage Scpi References External ReferencesGpib Capabilities of the DC Source Gpib References Types of Scpi Commands Introduction to ScpiConventions Used in This Guide Moving Among Subsystems Multiple Commands in a MessageIncluding Common Commands Using Queries Types of Scpi Messages Message UnitChannel List Parameter Scpi Data Formats Class Suffix Unit Unit with Multiplier Scpi Command CompletionSuffixes and Multipliers Response Data Types Outputstate Example Using Device ClearPage Enabling the Output Power-on InitializationIntroduction Programming 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 Measurement Samples and Time Interval Power Line Cycles Returning All Measurement Data From the Data Buffer Triggered MeasurementsCurrent Ranges Window Functions 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 Acquisition Pre-trigger and Post-trigger Data Acquisition DC Source Status Model Programming the Status Registers Operation Status Group Bit Configurations of Status Registers MSS and RQS Bits Questionable Status GroupStandard Event Status Group Status Byte Register Servicing Operation Status and Questionable Status Events Determining the Cause of a Service Interrupt Subsystem Commands Common CommandsProgramming Parameters Scpi Programming Commands At a Glance Subsystem Commands SyntaxSave new cal constants in non-volatile memory Sets the triggered output voltage in voltage priority mode Mode mode, @list DELayFUNCtion Mode mode, @list VOLTage Sets the output voltage in voltage priority mode Output Programming Parameters Common Commands SyntaxESE n SRE n CALibrateCURRentMEASure Calibration CommandsCALibrateCURRent CALibrateCURRentLIMitPOSitive CALibrateCURRentLIMitNEGative CALibrateLEVel CALibratePASSwordCALibrateDATA CALibrateDATE CALibrateSAVE CALibrateSTATeCALibrateVOLTage Query Syntax Measurement CommandsFETChARRayCURRent? FETChARRayVOLTage? FETChCURRent? FETChVOLTage? Enter values greater than 0.015A MEASureARRayCURRent? MEASureARRayVOLTage?MEASureCURRent? MEASureVOLTage? SENSeCURRentRANGe Query Syntax SENSeFUNCtion? @channel list SENSeFUNCtionSENSeSWEepNPLCycles SENSeSWEepOFFSetPOINts SENSeSWEepPOINts SENSeSWEepTINTervalSENSeWINDow OUTPutPROTectionCLEar Output CommandsOUTPut OUTPutOSCProtect SOURceCURRentLIMitBWIDth Default SuffixSOURceCURRentIMMediate SOURceCURRentTRIGgered SOURceCURRentLIMitIMMediate SOURceCURRentLIMitTRIGgered SOURceDELay SOURceDELayMODESOURceCURRentMODE SOURceCURRentLIMitMODE Query Syntax SOURceFUNCMODE? @channel list SOURceFUNCtionMODESOURceVOLTageALCBWIDth SOURceVOLTageIMMediate SOURceVOLTageTRIGgered NR10 or SOURceVOLTageMODESOURceVOLTagePROTectionSTATe Query Syntax SOURceVOLTagePROTectionSTATe? @channel list STATusOPERationEVENt? Status CommandsSTATusOPERationENABle Bit Configuration of Operation Status Registers STATusOPERationNTR STATusOPERationPTR STATusPRESetParameters Preset Value Command Syntax STATusPRESet Parameters None Examples STATusQUEStionableNTR STATusQUEStionablePTR STATusQUEStionableENABleQuery Syntax STATusQUEStionableENABle? @channel list STATusQUEStionableCONDition? System Commands SYSTemERRor?SYSTemVERSion? TRIGgerACQuire Trigger CommandsABORt INITiateNAME RST Value TRIGgerACQuireSOURceTRIGgerTRANsientSOURce TRIGgerTRANsient Bit Configuration of Standard Event Status Enable Register Common CommandsCommand Syntax *CLS Parameters None Parameters Power-On Value Examples Field Information ExampleQuery Syntax *OPT? Returned Parameters Aard RST Settings Power-on Value Query Syntax TST? Returned Parameters NR1 Bit Configuration of Status Byte Register Table A-1. Specifications Table A-2 Supplemental Characteristics Weight Output Common ModeSafety Dimensions Figure A-1. Output Impedance Graphs all outputs Equipment Required Measurement Techniques Performance & Verification Tests Test Setup Electronic LoadProgramming Positive Current Limit +CL Program CommandsVoltage Priority Tests Voltage Programming and Readback Accuracy Negative Current Limit -CL Action Program Commands Current Programming and Readback Accuracy Current Priority Tests Voltage Priority, Constant Voltage Load Effect Load Effect Tests Voltage Priority, -Current Limit Load Effect Test Voltage Priority, +Current Limit Load Effect 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 Voltage Priority Ripple and Noise Ripple and Noise Tests Voltage Priority, Transient Recovery Time Transient Response TestsCurrent Priority Ripple and Noise Figure B-2. Transient Waveform Voltage Priority Current Priority Transient Recovery Time Figure B-3. Transient Waveform Current Priority Performance Test Equipment Form Performance Test Record Form Enable Calibration Mode Performing the Calibration Procedure 100 Negative Current Limit CalibrationPositive Current Limit Calibration 5A Range Current Measurement Calibration 15mA Range Current Measurement Calibration Saving the Calibration Constants101 Error Meaning Changing the Calibration PasswordCalibration Error Messages Table B-3. Gpib Calibration Error Messages Error Number List Table C-1. Error Numbers103 104 Error Messages 105 Error Messages CPage 107 Line Voltage SelectionPage CHG-2010-J01010-KEP Earlier Version Output ConnectorsMating Connector Part Numbers Rear Panel Pinout AssignmentsPage 111 Index 112 Index Scpi 113 114 Japan United States Latin AmericaCanada Australia/New Zealand Europe Asia Pacific Manual Updates