Chapter 5
Calibration
© National Instruments Corporation
5-5
SCXI-1124 User Manual
The offset and gain errors of the SCXI-1124 are small enough that B
L
and B
H
will fall within this
range. If you are also trying to calibrate out additional system errors using the SCXI-1124
linearization method, then you may not be able to fit B
L
and B
H
onto the EEPROM. In this case,
you will need to keep track of B
L
and B
H
elsewhere.
Measurement Technique
When you measure voltage or current from the SCXI-1124, you should use a voltmeter or current
meter that integrates its readings to reduce errors due to noise. If you use a DAQ board that does
not use an integrating ADC, you should average a few hundred readings. Remember that any
errors from your calibration measurements must be added to the error described in the calibration
sections.
