NI 9775 with ICP accelerometer

[TrashPanda00]

Greetings!

I am working on a labview setup to measure a PCB 3 axis ICP accelerometer (350B50) on a vibration table. Someone working on the project before me ordered the NI-9775 digitizer and cdaq 9171 for this. Will I need to add a sensor signal conditioner to provide the excitation voltage and constant current to the accelerometer? I'm assuming that since the sound and vibration specific modules like the 9234 or 9232 feature IEPE signal conditioning and the 9775 digitizer does not mention that feature I would need one. If I do end up needing to buy the signal conditioner to use the 9775, would it be better to switch to something like the 9232 instead or will the 9775 with signal conditioner work just as well?

[santo_13]

It would be best to switch to a DSA C-Series module instead of NI 9775 + signal conditioner for the following reasons,

1. better dynamic range 24-bit ADC to capture sound/vibration signals
2. better frequency domain fidelity 

9230 or 9232 are 3-channel DSA cards that would work, select based on highest frequency content of interest.

You may still need a signal conditioner, as the sensor is 4-wired, I am not sure if you can enable IEPE on each axis or only one of them.