Hi,As for as I understood that USB 4432 inputs are to read IEPE accelerometers signal. Can I read a conditioned voltage signal from my NCDT sensor i.e by using the option "IEPE-off with AC coupling"Thanks

1. What about if I use the 5th cahannel of 4432 to read square wave pulse width ,i.e. signal from digital tachometer using any software function from labview or Sound and Vibration Measurement Suite. if yes, how accurate will it be to read frequency (speed) as compared to from counters modules.The 5th channel is the same as the other channels of the 4432 except it lacks TEDS and IEPE excitation. I can't really say how "accurate" it will be at faster rates due to the delta-sigma ADC. Anyone else want to chime in on that one?? 2. Is digital trigger available to trigger analog acquisitions. if yes, is it possibel to read all 5 chanels togather in one task.you betcha! 3. If there exists a single PFI then is it possible to trigger two different tasks , say a task of 02 chanels with rising edge and another task of 02 channels with the falling edge of the same PFI.There are 8 PFI lines, but only one can be used on the device at a time (i.e. there might as well be only one PFI). You would need to have all channels you want to trigger in one task and use one of the PFI lines as the digital start trigger. (i.e. "no" ... having one task on the rising edge and one on the falling edge won't work, one task only per digital trigger) -gaving Message Edited by gaving on 06-01-2009 10:09 AM

Dynamic Signal Acquisition

Can NI USB 4432 read voltage i.e. conditioned NCDT signal

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Thank you very much all of you guys for your cooperation and help. it did work and now everything is clear to me bout 4432 and i intend to have one in near future.

Best regards and see you people soon again

Masood

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Dynamic Signal Acquisition

Can NI USB 4432 read voltage i.e. conditioned NCDT signal

I like NI USB 4432