Power Output of NI 9234 DAQ Card on NI cDAQ-9174 Chassis

[shams_hx]

Hey Guys,

I'm trying to find out the current/power output of the NI 9234 DAQ card in each of its 04 channels. I wish to connect GRAS 40PP CCP Free-field QC Microphone to it using an analog BNC connector cable. The microphone requires a 4 mA current and DC voltage input. I'm unable to receive any signal in the SignalExpress 2015 when I connect it.

Can anyone help me with this?

[pipipi0405]

You need to enable IEPE voltage in the settings when you configure your 9234. 

After that you should be able to supply enough power to the microphone through BNC cable.