bjorn_tt

Hello Measurement Computing Support Experts, We have at least 2 USB-TC modules here. For one of them (s/n 1ACEC6B), I tried to do the A/D calibration yesterday, using the InstaCal software. The window with progress bar suggested that it completed successfully. However, upon re-reading the configuration, the calibration date still comes up as 11/26/15 instead of 9/20/2022. It would be helpful to know what the calibration actually does. Is it just copying of the coefficients (based on thermovoltage look-up tables) for the configured type of TC to the coefficient banks for the 8 channels? Is only a change in thermocouple type prompting a change in those coefficients and a new calibration date? Or is there actually some kind of measurement going on during the calibration? Thanks, Bjorn