Signal Conditioning Hardware

[Curt_C]

Hi,

I need to measure the frequency of several input signals (1k to 200k) with PCI 6024E DAQ cards.  What signal conditoning hardware do I need to do this the easiest and cheapest way?  ie:  convert frequency to a voltage 

Thanks

Curt

[AdnanZ]

How many signals are you reading? You could have a look at the SCC form factor products from NI although I am doubtful if you will be able to read those range of frequencies.

Message Edited by Adnan Z on 06-03-2009 01:34 PM

[AdnanZ]

And, for those range of frequencies, I think the SCXI form factor would work. Have a look at the SCXI-1126.

[pflores · Accepted solution]

A couple of observations:

- The max sampling rate of the PCI 6024E DAQ is 200 kS/s, aggregate. This means this clock rate is shared between all channels. If you are using only one input channel per card, you could achieve 200 kS/s/channel, but if you use two channels, this will be divided down to 100 kS/s/channel. This is described in the E-Series User Manual.

- This is relevant because even at a 200 kS/s rate, you can only reliably gather frequency information from signals slower than 100 kHz according to Nyquist. For faster cards, check out M-Series DAQ.