Xantrex Technology XHR, XFR, XFR3 manual Current Readback Calibration Procedure

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Current

Readback

Calibration

Procedure

Calibration

Current Mode Calibration

1.Connect the current shunt and voltmeter to the power supply as shown in Figure 4.2.

2.Activate calibration mode by sending command CMODE ON or CMODE 1 to the power supply.

3.Send command IRLO; VRLO to the power supply. Wait for the supply to settle. Measure and record the output voltage shown on the external voltmeter. Send IRLO again.

4.Send command IRHI; VRHI to the supply. Wait for the supply to settle. Measure and record the output voltage shown on the external voltmeter. Send IRHI again.

5.Calculate IRLO and IRHI from the voltages taken from the external voltmeter and the shunt resistance. I=V/R.

6.Send the command IRDAT <ilo>,<ihi> to the power supply. <ilo> and <ihi> are the current values obtained from sending the IRLO and IRHI commands to the power supply. When the power supply is calibrated, the low to high current readback calibration values are stored as constants.

7.Program the supply at various levels using the ISET command to confirm that the calibration was successful and that linearity is observed. Refer to the current readback accuracy specification in Section 1.

8.Turn off calibration mode by sending the command CMODE OFF or CMODE 0 to the power supply.

Release 3.1

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Contents GPIB-XHR GPIB-XFR GPIB-XFR3 Page Operating Manual for Phone 604 422 Toll Free North America 800 667 Fax 604 421 How do you get service?What does this warranty not cover? Disclaimer Product Model Number Serial Number Purchased From Purchase Date Information About Your Power SupplySupply SafetyManual Revisions Main SectionsAbout This Manual Contents Contents Description Features and SpecificationsReadback Features and FunctionsFeatures and Specifications FunctionsOVP SpecificationsModels 140 12-100 20-60 35-35 40-30 Models 60-20 100-12 150-8 300-4 600-2 Models 300 12-220 20-130 33-85 40-70 Models 60-46 100-28 150-18 300-9 600-4 Models 130 20-50 33-33 40-25 60-18 Models 100-10 150-7 300-3.5 600-1.7 Initial Inspection IntroductionInitial Inspection Installation and ConfigurationGpib Interface Subplate Located on Power Supply Rear Panel Gpib Interface PCB PON SRQ Basic Setup ProcedureStep # Description Action Reference Address IEEE-488 Primary Address SelectionSwitch Position Power on results Power On Service Request PON SRQRear Panel SRQ Switch Position PON SRQ State Iset Condition Default Settings Model ExampleIbfind devname Internal PCB Jumper Selections IEEE-488 Controller ConnectionHigh LOW OFF High OFF LOWUser Signals J7 Connector User SignalsJ7 User Signal Connector Circuit Block Diagram J7 User Cable with Ferrite Block Gpib Operation OperationExample Ascii LSB Bit Decimal Description Reset By Position WeightRequest Service SRQ Set when Power On PON Set when unitFormat Command SyntaxComputer Entry Floating Number Definition Example Description FormIset 2.0A Vset Command Summary DLY? AUXA?AUXB? CMODE?IHI FAULT?Cmode IdataAuxb 1 on Command ReferenceCommand Description Auxa 1 onChanging an output setting Response Fold mode where mode is Mask None = Unmask ALL SnspStatus, and Fault Registers on SNSP, ALL, None Accumulated Status, Status, and Fault Registers onResponse Vmax voltage Condition Mnemonic Bit Position Bit Weight Accumulated Status, Status, and Fault Registers11 Error Codes Error CodesLEDs TroubleshootingCalibration Voltage Voltage Mode CalibrationSetup Voltage Program Calibration Procedure ReadbackCalibration Current Program Calibration Procedure Current Mode CalibrationCurrent Calibration Setup Current Readback Calibration Procedure Over Voltage Protection OVP Calibration Page Xantrex Technology Inc