As stated above, I'm having some difficulty configuring a G.R.A.S. Array Microphone Type 40PH though my N1-9215 DAQ. When I attempt to assign a global virtual channel its telling me "no supported devices found" when attempting to configure as a sound pressure sensor.
I can set it up as a voltage analog device, but the readings I get from it are nonsense, its just white noise that doesn't react to sound differences at all.
I fear I have missed something basic!
Apologies if this is on the wrong discussion board.