Measurement Computing USB-2416-4AO - Manual (Page 21)

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Chapter 4
Calibrating the USB-2416-4AO
Measurement Computing calibrates the USB-2416-4AO using an NIST-traceable calibration method. This
method stores a correction factor for each AIN range in non-volatile memory on the device at the time of
calibration.
Allow a 45 minute warm-up period before calibrating the USB-2416-4AO.
Calibration methods
Factory calibration
Measurement Computing's Manufacturing Test department performs the initial factory calibration. You can
return the USB-2416-4AO once a year for a new factory calibration and calibration certificate.
Self calibration
Use InstaCal to calibrate the USB-2416-4AO whenever the ambient temperature changes by more than ±10 °C
from the last self-calibration
You can perform this procedure with thermocouple and voltage inputs connected to the input terminal blocks.
To calibrate the AOUT circuits, disconnect the analog outputs at the terminal block pins to ensure optimum
calibration results.