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2002 National Instruments Corp. All rights reserved.
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May 2002
370555A-01
NI 6711/6713/6731/6733
C
ALIBRATION
P
ROCEDURE
Introduction
This document contains step-by-step instructions for calibrating
National Instruments 6711/6713/6731/6733 for PCI/PXI/CompactPCI
analog output (AO) devices. Use this calibration procedure in conjunction
with the
ni671xCal.dll
file, which contains specific functions required
for calibrating NI 6711/6713/6731/6733 devices.
Note
Refer to
ni.com/support/calibrat/mancal.htm
for a copy of the
ni671xCal.dll
file.
What Is Calibration?
Calibration consists of verifying the measurement accuracy of a device
and adjusting for any measurement error. Verification is measuring the
performance of the device and comparing these measurements to the
factory specifications. During calibration, you supply and read voltage
levels using external standards, then you adjust the module calibration
constants. The new calibration constants are stored in the EEPROM.
The calibration constants are loaded from memory as needed to adjust
for 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. Calibration
restores these components to their specified accuracy and ensures that the
device still meets NI standards.
ni.com
