National Instruments SCXI-1121, Calibration Procedure

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CALIBRATION PROCEDURE
SCXI -1121
This document contains information and instructions for calibrating the
National Instruments SCXI-1121 signal conditioning module.
Contents
Introduction ............................................................................................. 2
What Is Calibration? ........................................................................ 2
Why Should You Calibrate? ............................................................ 2
How Often Should You Calibrate? .................................................. 2
Software and Documentation.................................................................. 2
Test Equipment ....................................................................................... 3
Test Conditions ....................................................................................... 3
Calibration Process ................................................................................. 4
Initial Setup...................................................................................... 4
Configuring the Half-Bridge Completion Jumpers .................. 5
Configuring the Gain Jumpers.................................................. 7
Configuring the Filter Jumpers................................................. 8
Configuring the Excitation Jumpers ......................................... 9
Verification Procedure ..................................................................... 10
Verifying Analog Input Offsets ................................................ 10
Verifying Voltage Excitation Limits ........................................ 11
Verifying Current Excitation Limits......................................... 12
Adjustment Procedure...................................................................... 13
Adjusting Analog Input Offsets................................................ 13
Adjusting Voltage Excitation ................................................... 14
Adjusting Current Excitation.................................................... 15
Verifying Adjusted Values .............................................................. 15
Test Limits .............................................................................................. 16
SCXI-1121 Front and Rear Panel Diagrams........................................... 19
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