Introduction; What Is Calibration; Why Should You Calibrate; How Often Should You Calibrate - National Instruments SCXI-1121 Calibration Procedure

Introduction

What Is Calibration?

Why Should You Calibrate?

How Often Should You Calibrate?

Software and Documentation

SCXI-1121 Calibration Procedure
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 device calibration
constants. The measurement circuitry compensates for any inaccuracies
in the device, and returns the accuracy of the device to the factory
specifications.
The accuracy of electronic components drifts with time and temperature,
which can affect measurement accuracy. Calibration restores these
components to their specified accuracy and ensures that the device still
meets NI standards.
Calibrate the SCXI-1121 at a regular interval as defined by the
measurement accuracy requirements of your application. NI recommends
that you perform a complete calibration at least once every year. You
can shorten this interval based on the accuracy requirements of your
application.
You do not need any special software or documentation to calibrate the
SCXI-1121. This calibration document contains all the information you
need to complete the calibration procedure. Refer to the SCXI-1121 User
Manual for more information about the SCXI-1121.
2 ni.com