Agilent Technologies N3280A manual Output Connections, Outputs 1

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2 - Installation

Output Connections

Turn the unit off before connecting any wires.

Outputs 1 - 4

Disconnect the mating plug from the unit by pulling it straight back.

The output connectors (outputs 1-4) have a termination for the Hi and Lo output terminals, the Hi and Lo sense terminals, a guard terminal, and an earth ground terminal (see figure 2-3). For proper operation of the dc source, you must connect the Hi sense and Lo sense terminals to their respective high and low monitoring points. Install the connector plug with its sense terminals connected before applying power to the unit.

CAUTION: Connect the sense leads carefully so that they do not become open-circuited. If the sense leads are left unconnected or become open during operation, the dc source will revert to a local sense mode using internal sense protect resistors. This will result in an incorrect voltage being applied at the load terminals.

The 6-pin connector is removable and accepts wires sizes from AWG 28 to AWG 16. Insert the wire into the wire terminal, then use a small, flat-bladed screwdriver to tighten the wire terminal. Agilent Technologies does not recommend using wire sizes smaller than AWG 24. After you insert the mating plug into the output connector, tighten the two locking screws to secure the connection.

OUTPUT 1

MATING PLUG

SHOWN

TIGHTEN SCREWS

LOCKING SCREW

Hsen Hi Lo Lsen

INSERT WIRES

TWIST LEADS

TWIST PAIR

_

LOAD

+

Figure 2-3. Remote Sense Connections

Figure 2-4 shows how to connect remote sense and load leads when using a removable test fixture. For best transient response and load regulation, keep the resistance and inductance as low as possible, as illustrated in the figure. The addition of a low-leakage RC network may help improve output transient response when the unit is operating in voltage priority mode.

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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 TestsRipple and Noise Tests Error Number List 103Transient Response 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 CordOutput Connections Turn the unit off before connecting any wiresOutputs 1 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 Procedure Checkout ProcedureExplanation Power-On Selftest Errors Selftest Error MessagesRuntime Error Messages Case of TroublePage Gpib References External ReferencesGpib Capabilities of the DC Source Scpi ReferencesIntroduction to Scpi Types of Scpi CommandsConventions Used in This Guide Using Queries Multiple Commands in a MessageIncluding Common Commands Moving Among SubsystemsMessage Unit Types of Scpi MessagesChannel List Parameter 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 OutputOvervoltage Protection Output ModeOutput Current Oscillation Protection Triggering Output ChangesOutput Trigger Model Enabling the Output Trigger System Setting the Voltage and Current Trigger LevelsSelecting the Output Trigger Source Generating Output Triggers Making MeasurementsAverage Measurements Power Line Cycles Measurement Samples and Time IntervalWindow Functions Triggered MeasurementsCurrent Ranges Returning All Measurement Data From the Data BufferEnabling the Measurement Trigger System Measurement Trigger ModelSelecting the Measurement Trigger Source Selecting the Sensing Function Output Settling DelayGenerating Measurement Triggers 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 EventsCommon Commands Subsystem CommandsProgramming Parameters Subsystem Commands Syntax Scpi Programming Commands At a GlanceSave new cal constants in non-volatile memory 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 CALibrateLEVelCALibrateSTATe CALibrateSAVECALibrateVOLTage FETChCURRent? FETChVOLTage? Measurement CommandsFETChARRayCURRent? FETChARRayVOLTage? Query SyntaxSENSeCURRentRANGe MEASureARRayCURRent? MEASureARRayVOLTage?MEASureCURRent? MEASureVOLTage? Enter values greater than 0.015ASENSeSWEepOFFSetPOINts SENSeFUNCtionSENSeSWEepNPLCycles Query Syntax SENSeFUNCtion? @channel listSENSeSWEepTINTerval SENSeSWEepPOINtsSENSeWINDow OUTPutOSCProtect Output CommandsOUTPut OUTPutPROTectionCLEarSOURceCURRentLIMitIMMediate SOURceCURRentLIMitTRIGgered Default SuffixSOURceCURRentIMMediate SOURceCURRentTRIGgered SOURceCURRentLIMitBWIDthSOURceDELayMODE SOURceDELaySOURceCURRentMODE SOURceCURRentLIMitMODE 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 STATusQUEStionablePTRSYSTemERRor? System CommandsSYSTemVERSion? INITiateNAME Trigger CommandsABORt TRIGgerACQuireTRIGgerTRANsient TRIGgerACQuireSOURceTRIGgerTRANsientSOURce RST ValueParameters Power-On Value Examples Common CommandsCommand Syntax *CLS Parameters None Bit Configuration of Standard Event Status Enable RegisterExample Field InformationQuery Syntax *OPT? Returned Parameters Aard 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 TechniquesElectronic Load Test SetupProgramming 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 TestCurrent Priority Constant Current Test Source Effect TestsVoltage Priority, Constant Voltage Source Effect 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 NoiseTransient Response Tests Voltage Priority, Transient Recovery TimeCurrent Priority Ripple and Noise 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 100Saving the Calibration Constants 15mA Range Current Measurement Calibration101 Table B-3. Gpib Calibration Error Messages Changing the Calibration PasswordCalibration Error Messages Error MeaningTable C-1. Error Numbers Error Number List103 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