B&K 1787B, 1786B, 1788, 1785B instruction manual Calibration

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26th byte

Check sum

Note: When the power supply receives a frame command, it will check the frame command, if the check sum is correct, then it will return to 90H, if there is any error on setting parameter or over parameter, then it will return to A0H, if the command wasn’t executed, then it will return to B0H, if the command isn’t effective, then it will return to C0H. Or otherwise, it will return to 80H.

Chapter 5 Calibration

We suggest you to calibrate the power supply yearly. We provide you a set of calibration software Power Calibration (PC1785B_1788). It is very easy to calibrate the power supply by the calibration software. Please make the following preparation before the calibration.

1.Please prepare a high accuracy multi-meter (the accuracy should be higher than the power supply). Prepare to use the multi-meter to measure the output voltage and short circuit current of the calibrated power supply.

2.Use IT-E131 communication cable to connect the DB9 interface connector of the power supply and the RS232 interface connector of the computer.

3.Install the PC1785B_1788 calibration software on your computer, and start the software.

After doing the above preparation, then you can calibrate the power supply easily by the software step by step. Please refer the following calibration process.

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Contents Page Content Protection from electric shock About your safetyQuick Reference General informationCertification and Warranty IntroductionCertification Front Panel at a Glance Function keys description Menu descriptionDisplay annunciators Cal Rear Panel at a GlanceCheck the list of supplied items Connect the power cord and turn on the power supplyQuick Start Preliminary CheckoutOutput Checkout Voltage Output CheckoutCurrent Output Checkout Verify the power-line voltage setting If the Power Supply Does Not Turn OnTo Adjust the Carrying Handle Verify that there is AC power to the power supplyBench-top viewing positions Carrying position To Rack Mount the InstrumentSpecifications SpecificationsMaximum input power Supplemental CharacteristicsEnvironmental Conditions Unit mmFront-panel Operation Front-panel Operation OverviewConstant Voltage Operation Set Maximum voltageMAX Volt Constant Current OperationSaving and Recalling Operation Menu OperationInitiating the Output Voltage Init Volt Setting the Key SoundKEY SoundSetting the Baud RateBAUDRATE Initiating the Output stateINIT OUTSetting password for function keysKEY Lock Setting Address AddressRemote Operation Mode Communication settingIT-E131 Communication cable Description Setting the remote control mode 20HFrame format Communication protocolSetting the output state ON/OFF 21H Setting the maximum output voltage 22HSetting the output voltage 23H Setting the communication address 25H Setting the output current 24HReading the calibration state 28H Entering the calibration mode 27HCalibrate the current value 2BH Calibrating the voltage value 29HSetting calibration information 2EH Save the calibration data to Eeprom 2DHReading calibration information 2FH Restore the factory default calibration data 32H Enable the local key 37HReturn information of command operation in power supply 12H Calibration Finish calibrating ConfigurationVoltage calibration Current calibrationReset to the default calibration settings InstallationPV1785B1788 Software Functions of PV1785B1788 Status bar 1Configure the systemQuickly setting Setting Voltage and current4. GO/NG Test Function Program settingPresent Voltage/Current Chart Chart DescriptionSave and Open Page Limited One-Year Warranty Service Information USA