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Category: Software
Product Number: AD5940BIOZ


When we measure impedance by 4 wire measurement with default setup, impedance value which we got from sensorpal is different from what we set the value in Z board. But when we adjust the Rcal value, we got the near to the actual value.

Q1.Can you please anyone explain more about Rcal role in 4 wire impedance measurement?

     in application note(an-1557) they didn't mention anything about rcal in 4 wire measurement.

Q2. And in sensorpal, there is a option to edit Rcal value. When we change the value what exactly changing in the device?

because Rcal is mounted on board and as per my research it is not there in IC(internal like rtia).also.

More clarity
[edited by: Vikram123 at 5:02 PM (GMT -4) on 26 Jul 2022]