Error setting pretrigger samples

[Jackson_Peacock]

I am having problems acquiring data with pretrigger samples when capturing more than one channel.

If I trigger and capture on the same channel (tried 1-4) then it works great, regardless of the number of pre-trigger samples set. If I trigger on channel 4 and capture channels 4 and 1 (passed in that order), with no pretrigger samples set, then it works fine. However, if I trigger on channel 4 and capture channels 4 and 1 (passed in that order), with pretrigger samples set, then I get the following error:

Error -10621 occurred at AI Control. Possible reason(s):
NI-DAQ LV: The specified trigger signal cannot be assigned to the trigger resource.

Searching the forum, I have found a few other people that had the same problem but they did not have solutions. Any ideas?

[Jackson_Peacock]

PS: I am using an NI-PXI 6071 MIO card.

[CWolf]

What version of the DAQmx driver are you using?  Both of those posts that you referenced are rather old, and I know that there was an issue in past versions of DAQmx that was similar to what you are describing.  However, it should be fixed if you upgrade to the latest driver (9.0.2, as of right now).  

-Christina

[Jackson_Peacock · Accepted solution]

Thanks Christina, that is a good suggestion. I just found out that this is a hardware limitation, though.