Have a test with 3 microphones and 9 vibration channels.
When I go to calibration, I cannot select my microphone channels for calibration. The channel status field says "Not Active", even for my vibration channels.
Here is a screenshot of what I am seeing:
Solved! Go to Solution.
Selecting Pa up above worked. Guess it is good not to calibrate a microphone with g's.
Pressing "Check" and then "Start" also helped.