Advantech ADAM-5511 Manual page 27

CJC Calibration:
(1). Prepare a voltage source which is accurate to the mV level.
(2). Run the zero calibration and span calibration function.
(3). Use a temperature emulation device (such as Micro-10) to send
a temperature signal to the ADAM module and then compare
this signal with the reading from the ADAM module. If the
reading value is different from the signal, adjust the CJC value
to improve it.
Note: CJC (cold junction sensor) calibration only applies to
the ADAM 4011, 4011D, 4018, 4018M, 5018
Analog Input Resistance Calibration:
Modules: ADAM 4013