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From: Biswa on 6 May 2008 04:40
Hi there,
I have modified the MultiFunction-Sync-In-Out to accept 4 analog ins and 1 analog out but as you can see I always get Error -200288. I have attached the vi along with this message. If this problem is solved, I would like to output a second analog channel with a pulse to mark signal out from the first analog out. Please advise. Cheers, Biswa


noise_natural_v4.vi:
http://forums.ni.com/attachments/ni/170/321274/1/noise_natural_v4.vi
From: rsw on 7 May 2008 06:10
Hi Biswa,
Odds are under DAQmx your not stopping the task after a read or write before re-enabling any triggers as noted in this KB:
<a href="http://digital.ni.com/public.nsf/allkb/BFCE83133C0ECAD786256E6000814B68?OpenDocument" target="_blank">http://digital.ni.com/public.nsf/allkb/BFCE83133C0ECAD786256E6000814B68?OpenDocument</a>
All the best,
From: Biswa on 7 May 2008 09:40
Hi there, Thanks for the message. You are right that this is because of the task not getting stopped at every iteration of the while loop. It seems stopping a task at the end of each iteration only holds for software triggered DAQ and not otherwise.&nbsp; have herewith attached the next version of the code. The query is if I am doing finite sample acq. and generation (the samples are set as fixed for AO and AI) then shouldn't my text file for data saved via AI/AO operation have equal number of points starting at set start time. It certainly doesn't seem to be the case and I reckon this is something to do with the buffer. Your advice on this would be highly appreciated. Cheers, Biswa


stimFCO_v4.vi:
http://forums.ni.com/attachments/ni/170/321711/1/stimFCO_v4.vi
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