Agilent Technologies U2802A - Manual (Page 64)

5 Calibration
54 Agilent U2802A 31-Channel Thermocouple Input User’s Guide
Calibration
Calibration Information
The Agilent U2802A is factory calibrated and the calibration constants are
stored in the EEPROM. During initial setup, the calibration constants are
read from the EEPROM before any measurements are taken.
Zeroing Function
The Agilent U2802A thermocouple input device operating in thermocouple
mode can be set to zero mode, where the differential inputs of each
channel are shorted together. This zeroing function is used to measure the
total system offset errors due to initial offset error, temperature drift
error, and long term drift error from the DAQ (U2355A or U2356A) and
the U2802A. This measurement can then be subtracted from subsequent
measurements in order to remove the system offset error.
U2802A_UG.book Page 54 Friday, November 25, 2011 10:57 AM