frequency measurement

[Dost]

I am using  12 bit 6024 E series card along with BNC 2090 . i am using this set up to measure voltages from different sensors.it works fine.now i want to measure frequency from a vortes meter. i do nt know where should i plug in my frequency signal in to  bnc 2090 or DAQ 6024 E series card . should i need some other conditioning unit to measure this frequecny . or my same existing setup can be usedd for this purpose. If yes how?should i use same diff input voltage input channels fo r measureing frequecny signals? i have no idea

Thanks

[Jon Bowers]

What kind of signal do you get out of the vortes meter?

Is it analog or digital?

What voltage range is it?

What format is it in? ie if its digital how is the frequency information stored?

You need to know to know the answers to these sorts of questions so you can decide how best to connect the signal

Regards

Jonathan Bowers

NIUK Applications Engineer

[Dost]

thanks for the reply. the vortex meter has analog frequecy signal.if use MAX and use Frequency in the type of sensor measurment then on devices selection it just give me the option for device selection i.e my DAQ card E series card. and it does not allow me to select any channel. what should be the way to acquire the frequency in MAX

[Jon Bowers]

Hi Dost,

If you want to measure frequency in hardware then you would need addittional signal conditioning like the SCXI 1126. This is documented in a tutorial linked bellow:

http://zone.ni.com/devzone/conceptd.nsf/webmain/fe39f389967440cc86256a6f005dee7c

Otherwise as long as you sample fast enough for the frequency you are measure you should be able to measure the frequency in software.