Prof . Gerhard Gruhler

I want to use the uTrack24 as a mobile Multichannel-Recorder for acoustical measurements in car cabin. My two questions are:
1) What is the input impedance of the analog inputs? I need it for designing the microphone amplifiers.
2) Is there exact sampling of all 24 channels at the same sample time or have I to expect delays in between the channels?
What about the time jitter of the sampling?
(Remark: We had experiences with our old recording system which was also based on CIRRUS ICs, that we needed to install an additional reference impuls for exact timing in between the 24 channels)

Thanks for any helpful support