National Instruments NI 6731 Calibration Procedure

Also see for NI 6711: User manual

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National Instruments NI 6731 Calibration Procedure Manual pdf 1 page image

© 2002 National Instruments Corp. All rights reserved.CVI™, LabVIEW™, National Instruments™, NI™, ni.com™, and NI-DAQ™ are trademarks of National InstrumentsCorporation. Product and company names mentioned herein are trademarks or trade names of their respectivecompanies. For patents covering National Instruments products, refer to the appropriate location: Help»Patents in yoursoftware, the patents.txt file on your CD, or ni.com/patents.May 2002370555A-01NI 6711/6713/6731/6733CALIBRATION P ROCEDUREIntroductionThis document contains step-by-step instructions for calibratingNational Instruments 6711/6713/6731/6733 for PCI/PXI/CompactPCIanalog output (AO) devices. Use this calibration procedure in conjunctionwith the ni671xCal.dll file, which contains specific functions requiredfor calibrating NI 6711/6713/6731/6733 devices.Note Refer to ni.com/support/calibrat/mancal.htm for a copy of theni671xCal.dll file.What Is Calibration?Calibration consists of verifying the measurement accuracy of a deviceand adjusting for any measurement error. Verification is measuring theperformance of the device and comparing these measurements to thefactory specifications. During calibration, you supply and read voltagelevels using external standards, then you adjust the module calibrationconstants. The new calibration constants are stored in the EEPROM.The calibration constants are loaded from memory as needed to adjustfor the error in the measurements taken by the device.Why Should You Calibrate?The accuracy of electronic components drifts with time and temperature,which can affect measurement accuracy as the device ages. Calibrationrestores these components to their specified accuracy and ensures that thedevice still meets NI standards.ni.com