Agilent Technologies 5951-2827, 5951-2826 manual Calibration Flowcharts, Example Program

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CALibration:SAVE

Writes the present calibration constants into the EEPROM. This command does not have to be sent until all ranges and modes have been calibrated. If the unit is turned off before CAL:SAVE is sent, the new calibration constants are lost

Calibration Flowcharts

The flowchart in Figures 6-2 describes the calibration procedure. It corresponds to the example calibration program. The flowchart indicates the appropriate statement that is used in the program example to accomplish each step. It also indicates when to set the power supply to the appropriate voltage and current output. Refer to Table 6-2 for the variable values, power supply settings, and current shunts associated with the model that you are calibrating.

Calibration mode is turned on at the beginning of the calibration procedure. Remember to save the calibration constants after you have verified that they are within specifications. Do not turn calibration mode off until after you have saved the new calibration constants - otherwise the new calibration constants will be lost.

Note

When calibrating the high calibration point of the high current range and high current transient level, you

 

must wait about 30 seconds for the internal current shunt of the module to stabilize with the full current

 

applied before you execute the CAL:MEAS:HIGH command. Because the high current range

 

calibration causes the Electronic Load to heat up, you should also allow about 30 seconds time for the unit

 

to cool down to room temperature before continuing to calibrate any other modes or ranges.

 

 

One shortcut that is used in this calibration procedure is that the readback DAC is calibrated for current readback after the high current range calibration, and calibrated for voltage readback after the voltage range calibration. This is because the readback setups are the same as the setups for the high current and voltage ranges. Another shortcut is that the same values are used to calibrate the main DAC as well as the readback DAC. You may wish to use different values to calibrate the readback DAC to optimize accuracy.

It is not necessary to calibrate the current readback for the low current range or for reading back resistance values. This is because the high current readback calibration takes care of the low current range. The resistance values that are readback are calculated based on the voltage at the input terminals and the current through the internal current shunt resistor. If the readback DAC has been calibrated for voltage and current readback, resistance readback will be accurate.

Note

Remember to turn the unit off after you have saved the new calibration constants. When the unit is turned

 

on again, the new calibration constants are used to recalculate the software OP and OC limits. These

 

limits are not updated until power is cycled.

 

 

Example Program

The example program in this chapter is written in the Agilent BASIC Language. If you are using an HP Series 200/300 computer, simply type in the program and run it. If you are using a different computer or programming language, you will have to modify the program before you can run it.

The program can be used to calibrate all Electronic Load models. You must specify the address of the Electronic Load that you are calibrating as shown in line 10. (The program assumes address 705.) Line 20 specifies channel 1 which is the channel number used by all Single Input Electronic Load models. You must make the variable assignments for the model that you are calibrating in lines 40 through 90. Refer to table 6-2 for the values that apply to the model you are calibrating. Do not change the last value (Flag) in lines 40, 50, 70, 80, and 90.

When the program is run, it will stop at appropriate places and prompt you to set the power supply according to Table 6-2, enter your measured values into the computer, and verify that the values are within specifications.

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Contents Operating Manual Agilent Part No Microfiche Part No Updated AprilCertification Safety Summary Symbol Description Safety SummaryHerstellerbescheinigung Manufacturer’s DeclarationPrinting History Table of Contents Calibration Local OperationRemote Operation Considerations for Operating in Constant Resistance Mode Reader Path What’s In This ManualOptions General InformationSpecifications Safety RequirementsModes Continuous Mode Regulation Constant Resistance Mode RangesPulsed Mode 6060B 6063BCurrent Readback Temperature Coefficient Supplemental Characteristics 6060B 6063BResolution Bandwidth Maximum Readback CapabilityMaximum VA Peak Inrush Current 2.5 a typical Supplemental CharacteristicsCurrent Slew Rate Rate # High Range Step Low Range Step Transition TimeModel 6063B Range Transient Current Level Resistance Slew RateOvershoot With unit on 6060B 6063B 10%With unit off WidthPage Front Panel Description IntroductionRemote Programming Operation OverviewProgrammable Features Local/Remote ControlConstant Current CC Mode Modes of OperationSoftware Current Limit Triggered Current LevelImmediate Resistance Level Constant Resistance CR ModeSlew Rate Transient Resistance Level Constant Voltage CV ModeTriggered Resistance Level Triggered Voltage Level Immediate Voltage LevelTransient Voltage Level Transient OperationPulsed Transient Operation Hpsl Command DescriptionSelects pulsed transient operation Selects the external trigger inputSets pulse width to 1 millisecond Selects the external trigger input sourceTriggering a transient pulse Triggering a preset levelToggling Slew Rate And Minimum Transition TimeRisetime Transition Limitation Input Current, Voltage, and Power MeasurementTransition Times and Slew Rates Short On/OffReading Remote Programming Errors Saving and Recalling SettingsInput On/Off Status ReportingResetting Latched Protection Protection FeaturesOvervoltage OvercurrentOverpower Control ConnectorOvertemperature Reverse VoltageExternal Programming Input FaultMonitor Outputs Port On/Off Inspection Check Line Voltage Location and CoolingTurn-On Checkout Line Voltage Fuse Agilent Part No Voltage Select SwitchesGpib Errors Input Errors Display Description Connect The Power CordError Turn-On/SelftestController Connection Power TestGpib Connector Wire Size Strip back Rear Panel Connectors and SwitchesGpib Address AWGInput Binding Post Control Connector +S and -S Pins 3IM and VM CommonSense Switch Trigger ConnectorApplication Connections Zero-Volt Loading Connections Maximum Wire Lengths to Limit Voltage DropsParallel Connections 11. Local Sensing 13. Parallel Operation Page Local Operation Front Panel Controls and Indicators DescriptionControls and Indicators Description Function Keys Local Control Overview Turning the Input On/Off Using The Function Keys∙ Short on Recommended Programming Sequence Setting CC Values Setting the Mode of OperationCC Programming Ranges Function Key DisplayExamples Setting CR Values Examples Setting CV Values Function Key Display Range of Values Continuous Pulse Train Programming RangesShorting The Input Using The System KeysDisplaying Error Codes Setting The Electronic Load’s Gpib AddressChanging Wake-up Settings Factory Default Settings Function 6060B 6063BRecalling the Factory Default Values Gpib Address Enter/Output StatementsOutput EnterRemote Programming Commands Sending a Remote CommandGetting Data Back Output 705 MEASCURR?Ranges ModesTransient levels Slew RatesRemote Programming Flowchart Sheet Remote Programming Flowchart Sheet CR Mode Example CC Mode ExampleCV Mode Example Pulsed Transient Operation Example Continuous Transient Operation ExampleOutput 705TRAN on Output 705INPUT on Hpsl Command Short FormRemote Programming Ranges Function Constant Current CC6060B Constant Resistance CRConstant Voltage CV Transient OperationPage Example Programs Equipment Characteristics Recommended ModelEquipment Required Equipment Required for CalibrationCalibration Commands Example Program Calibration FlowchartsCalibration Information 6060B 6063B Supply Shunt Values SettingsCalibration Flowchart Calibration Flowchart Calibration Flowchart Pause Program ListingWait END ifPrint Voltage Calibration Pause SubendElse Line ExplanationPage Considerations For Operating In Constant Resistance Mode Considerations For Operating In Constant Resistance ModeConsiderations For Operating In Constant Resistance Mode Index IndexIndex 24, 25, 26 Index Agilent Sales and Support Office Agilent Sales and Support OfficesManual Updates
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