Agilent Technologies N3280A manual Performance & Verification Tests, Measurement Techniques

Page 84

B - Performance and Calibration Procedures

Table B-1. Equipment Required (continued)

Oscilloscope	Sensitivity: 1 mV/div.	Agilent Infinium or
	Bandwidth Limit: 20 to 30 MHz	equivalent
	Probe: 1:1 with RF tip
RMS voltmeter	True RMS	Rhode & Schwartz
	Bandwidth: 20 Mhz min.	Model URE3 RMS-P-P
	Sensitivity: 100 ∝V	Voltmeter
Variable-voltage transformer	Adjustable to highest rated input voltage	Agilent 6800 series
or ac source	range. Power: 500 VA
Tektronixs current probe	20mA/div	AM503B
amplifier and power module		TM501 or 2A
Pulse/function generator	+/- 1V Square Wave , 400-1kHz	Agilent 8116A
Load resistor, 20 ohms	20 ohm 10W	0811-3896 or equivalent
Resistor 0.2 ohm	5- 1 ohm resistors in parallel	5 – 0699-0208 or equivalent
Resistor 1k ohm	1k ohm for 15mA range accuracy	0757-0280 or equivalent
Resistor 20K ohm	20k ohm for 0.5mA range accuracy	0757-0449 or equivalent
Resistor 16k ohm	16.2k ohm for rms noise measurements	0757-0447 or equivalent
Resistor 50 ohm	50 ohm series resistor for noise	0757-0706 or equivalent
	measurements
Capacitor 10uF for voltage	3- 3.3uF film type capacitors in parallel	3 – 0160-7308 or equivalent
transient response
Capacitor for current	0.47uF film type capacitor	1060-0970 or equivalent
transient response

Performance & Verification Tests

Enter all of the performance test results and calculated measurements in the Performance Test Record Form that is provided at the end of this section.

Measurement Techniques

If more than one meter or if a meter and an oscilloscope are used, connect each to the terminals by a separate pair of leads to avoid mutual coupling effects. For constant voltage dc tests, connect only to HI sense and LO sense terminals, since the unit regulates the voltage that appears at the sense terminals, not the output terminals. Use twisted-pair wiring to avoid noise pickup on the test leads.

NOTE: When using the Agilent 3458A as an ammeter, always select the specific current measurement range that you will be using. Do not use the autoranging feature of the ammeter, as this may introduce noise in your current measurements by toggling between measurement ranges. Always use the lowest range possible to provide the best measurement accuracy.

84

Image 84

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 Types of Scpi Commands Scpi Command Completion Using Device ClearExternal References Gpib Capabilities of the DC Source Introduction to ScpiScpi Programming Commands At a Glance Calibration Commands Measurement CommandsOutput Commands Status CommandsSystem Commands Trigger CommandsCommon Commands Voltage Priority TestsError Number List 103 Ripple and Noise TestsTransient Response Tests Page Safety Considerations Document OrientationOptions and Accessories DescriptionRemote Programming Option DescriptionOutput Characteristics Voltage Priority OperationOutput Characteristic Current Priority Current Priority OperationMeasurement Characteristics Start of a Measurement Cleaning InspectionDamage Packaging Material Additional ItemsLocation Bench OperationRack Mounting Do not block the fan exhaust at the rear of the unitPower Connections Connect the Power CordTurn 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 airCoaxial Guard Connections Guard Connections for Test FixturesExternal Trigger Connections Computer ConnectionsMaintaining Stability OVP ConsiderationsSettings for Power Module Configuration Switch Switch SettingSwitch Setting Address Gpib AddressFront 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 ReferencesTypes of Scpi Commands Introduction to ScpiConventions Used in This Guide Multiple Commands in a Message Including Common CommandsUsing Queries Moving Among SubsystemsTypes of Scpi Messages Message UnitChannel List Parameter Scpi Data Formats Scpi Command Completion Suffixes and MultipliersResponse Data Types Class Suffix Unit Unit with MultiplierUsing Device Clear Outputstate ExamplePage Power-on Initialization IntroductionProgramming the Output Enabling the OutputOutput 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 IntervalTriggered Measurements Current RangesWindow Functions Returning All Measurement Data From the Data BufferMeasurement 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 AcquisitionProgramming the Status Registers DC Source Status ModelBit Configurations of Status Registers Operation Status GroupQuestionable Status Group Standard Event Status GroupStatus Byte Register MSS and RQS BitsDetermining the Cause of a Service Interrupt Servicing Operation Status and Questionable Status EventsSubsystem 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 modeCommon Commands Syntax ESE nSRE n Output Programming ParametersCalibration Commands CALibrateCURRentCALibrateCURRentLIMitPOSitive CALibrateCURRentLIMitNEGative CALibrateCURRentMEASureCALibratePASSword CALibrateDATACALibrateDATE CALibrateLEVelCALibrateSAVE CALibrateSTATeCALibrateVOLTage Measurement Commands FETChARRayCURRent? FETChARRayVOLTage?FETChCURRent? FETChVOLTage? Query SyntaxMEASureARRayCURRent? MEASureARRayVOLTage? MEASureCURRent? MEASureVOLTage?SENSeCURRentRANGe Enter values greater than 0.015ASENSeFUNCtion SENSeSWEepNPLCyclesSENSeSWEepOFFSetPOINts Query Syntax SENSeFUNCtion? @channel listSENSeSWEepPOINts SENSeSWEepTINTervalSENSeWINDow Output Commands OUTPutOUTPutOSCProtect OUTPutPROTectionCLEarDefault Suffix SOURceCURRentIMMediate SOURceCURRentTRIGgeredSOURceCURRentLIMitIMMediate SOURceCURRentLIMitTRIGgered SOURceCURRentLIMitBWIDthSOURceDELay SOURceDELayMODESOURceCURRentMODE SOURceCURRentLIMitMODE SOURceFUNCtionMODE SOURceVOLTageALCBWIDthSOURceVOLTageIMMediate SOURceVOLTageTRIGgered Query Syntax SOURceFUNCMODE? @channel listSOURceVOLTageMODE SOURceVOLTagePROTectionSTATeQuery Syntax SOURceVOLTagePROTectionSTATe? @channel list NR10 orStatus Commands STATusOPERationENABleBit Configuration of Operation Status Registers STATusOPERationEVENt?STATusPRESet Parameters Preset ValueCommand Syntax STATusPRESet Parameters None Examples STATusOPERationNTR STATusOPERationPTRSTATusQUEStionableENABle Query Syntax STATusQUEStionableENABle? @channel listSTATusQUEStionableCONDition? STATusQUEStionableNTR STATusQUEStionablePTRSystem Commands SYSTemERRor?SYSTemVERSion? Trigger Commands ABORtINITiateNAME TRIGgerACQuireTRIGgerACQuireSOURce TRIGgerTRANsientSOURceTRIGgerTRANsient RST ValueCommon Commands Command Syntax *CLS Parameters NoneParameters Power-On Value Examples Bit Configuration of Standard Event Status Enable RegisterField Information ExampleQuery 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 Output Common Mode SafetyDimensions WeightFigure A-1. Output Impedance Graphs all outputs Equipment Required Performance & Verification Tests Measurement TechniquesTest Setup Electronic LoadProgramming Program Commands Voltage Priority TestsVoltage Programming and Readback Accuracy 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 TestSource Effect Tests Current Priority Constant Current TestVoltage 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 NoiseVoltage Priority, Transient Recovery Time Transient Response TestsCurrent 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 ModeNegative Current Limit Calibration Positive Current Limit Calibration5A Range Current Measurement Calibration 10015mA Range Current Measurement Calibration Saving the Calibration Constants101 Changing the Calibration Password Calibration Error MessagesTable B-3. Gpib Calibration Error Messages Error MeaningError Number List Table C-1. Error Numbers103 Error Messages 104Error Messages C 105Page Line Voltage Selection 107Page Earlier Version Output Connectors Mating Connector Part NumbersRear Panel Pinout Assignments CHG-2010-J01010-KEPPage Index 111Index 112113 Scpi114 United States Latin America Canada Australia/New ZealandEurope Asia Pacific JapanManual Updates