Multiple AIs on separate graph

[DAQ_Newbie]

Hello,

I am acquiring data from several accelerometers (10 Analog Inputs channels) at the same time upon the trigger of a digital rising edge input. I was wondering how to separate each channel or plot each channel on separate graph.

regards

don

[KrisnaWisnu · Accepted solution]

Hi DAQ_Newbie,

If you are using Express VIs, your acquired signals would be Dynamic Data (blue-white stripes). You can separate each channel by using Split Signals.

If you are using DAQmx VIs, your acquired signals can be scalar (thin lines), arrays (thicker lines) or waveform (brown-white stripes). You can separate each channel by using Index Array.

After separating the channels, you can plot each of the channel to the different graph.

Hope that helps,

Sincerely,

Krisna Wisnu

Message Edited by Krisna Wisnu on 10-11-2008 12:46 PM

[DAQ_Newbie]

Thanks heaps Krisna! Thats exactly what I was looking for.

 cheers

don

[KrisnaWisnu]

Hi don,

Glad can help. If it solved your problems, you may click Kudos to say thanks and Solution, to mark this thread has been solved and closed.

Thanks!

Krisna Wisnu

[DAQ_Newbie]

HI again krisna,

Ive posted a message on the counter discussion forum, but no one has replied to my query. I would appreciate if you cud give me ur feedback on it.

Basically, I am trying/struggling to obtain the pulse width of a TTL signal. My signal is from an optical switch which is in a constant high state. when an object passes thru the opto, the signal goes low for about 20ms.

Ive been trying to capture the low pulse duration using counter0 [Im using pcie 6259 daq card by the way] using MAX but keep getting measured values in the range of nanoseconds. Also an error message pops up stating that the "expected timeout has expired" , suggesting that no signal change was detected.

My signal is clean and properly grounded. Ive ran out of ideas and cant figure out wats going wrong.

waiting to hearing from u

Don

[PBear]

Hi Don,

I posted to the forum you are refering to. Any futher posts about the 6259 counter issue should be put there to help keep seperate issues on seperate threads as most users will see this thread as already solved.

Counter Thread: http://forums.ni.com/ni/board/message?board.id=250&message.id=43741