Hello,
I am using the BNC-2120 and a K-type Thermocouple (TC). On the software side I use C/C++ and DAQmx to acquire the temperature and some analog input signals (AI). While I was setting up the input channels, I noticed some odd behaviour.
If I create the TC-channel before the AI-channels, everything seems to be fine as the TC shows a reasonable temperature trend. But if I do it the other way round, the last AI-channel, that I created right before the TC-channel, is influencing my temperature measurement. That means, if I record some voltage increase on the AI-channel, my temperature will go up significantly.
Can someone explain to me why this is happening?
PS: All channels are part of the same task.