Current Ratings | Agilent Technologies N3280A specs

Installation - 2

OUTPUT 1

MATING PLUG

SHOWN

TIGHTEN SCREWS

LOCKING SCREW

Hsen Hi Lo Lsen

INSERT WIRES

TWIST LEADS

TWIST PAIR

ADDITION OF LOW-LEAKAGE

RC NETWORK MAY IMPROVE

TRANSIENT RESPONSE IN

VOLTAGE PRIORITY MODE.

KEEP RESISTNCE AND INDUCTANCE LOW. USE TWISTED PAIR OR SANDWICHED PCB TRACKS.

_

LOAD

+

FIXTURE

CONNECTIONS

Figure 2-4. Remote Sense Connections with Test Fixture

Current Ratings

The following table lists the characteristics of AWG (American Wire Gauge) copper wire for some common wire sizes that can be accommodated in the output connectors.

Table 2-2. Ampacity and Resistance of Stranded Copper Conductors

AWG No.	Maximum Ampacity (in	Resistance (at 20 deg. C)
	free air)	Ω/m	Ω/ft
24	3.52	0.0843	0.0257
22	5.0	0.0531	0.0162
20	8.33	0.0331	0.0101
18	15.4	0.0210	0.00639
16	19.4	0.0132	0.00402

Voltage Drops and Lead Resistance

To optimize the performance and transient response in your test system, please observe the following guidelines:

♦Twist the load leads together and keep them short. The shorter the leads, the better the performance.

♦Twist the sense leads together, but do not bundle the sense leads with the load leads.

♦For best performance, keep the total cable length to the load to about 5 meters (15 ft) or less.

The load wires must also be of a diameter large enough to avoid excessive voltage drops due to the impedance of the wires. In general, if the wires are heavy enough to carry the maximum short circuit current without overheating, excessive voltage drops will not be a problem.

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Image 23

Agilent Technologies N3280A manual Current Ratings, Voltage Drops and Lead Resistance

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 Transient Response Tests Error Number List 103Ripple and Noise 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 Outputs 1 Turn the unit off before connecting any wiresOutput Connections 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 Explanation Checkout ProcedureProcedure Case of Trouble Selftest Error MessagesRuntime Error Messages Power-On Selftest ErrorsPage Scpi References External ReferencesGpib Capabilities of the DC Source Gpib References Conventions Used in This Guide Types of Scpi CommandsIntroduction to Scpi Moving Among Subsystems Multiple Commands in a MessageIncluding Common Commands Using Queries Channel List Parameter Types of Scpi MessagesMessage Unit 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 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 Measurement Samples and Time Interval Power Line Cycles Returning All Measurement Data From the Data Buffer Triggered MeasurementsCurrent Ranges Window Functions Selecting 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 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 Programming Parameters Subsystem CommandsCommon Commands Save new cal constants in non-volatile memory Scpi Programming Commands At a GlanceSubsystem Commands Syntax 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 CALibrateVOLTage CALibrateSAVECALibrateSTATe 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 SENSeWINDow SENSeSWEepPOINtsSENSeSWEepTINTerval OUTPutPROTectionCLEar Output CommandsOUTPut OUTPutOSCProtect SOURceCURRentLIMitBWIDth Default SuffixSOURceCURRentIMMediate SOURceCURRentTRIGgered SOURceCURRentLIMitIMMediate SOURceCURRentLIMitTRIGgered SOURceCURRentMODE SOURceCURRentLIMitMODE SOURceDELaySOURceDELayMODE 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? SYSTemVERSion? System CommandsSYSTemERRor? 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 Query Syntax *OPT? Returned Parameters Aard Field InformationExample 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 Programming Test SetupElectronic Load 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 Voltage Priority, Constant Voltage Source Effect Source Effect TestsCurrent Priority Constant Current Test 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 Current Priority Ripple and Noise Voltage Priority, Transient Recovery TimeTransient Response Tests 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 101 15mA Range Current Measurement CalibrationSaving the Calibration Constants Error Meaning Changing the Calibration PasswordCalibration Error Messages Table B-3. Gpib Calibration Error Messages 103 Error Number ListTable C-1. Error Numbers 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