PXI-6562 Multiple Trigger

[kkwong]

HI,

     I am trying to trigger the capture of PXI-6562 with multiple PFIs.   Since I don't have extract channels available, I cannot use pattern trigger.  My idea is to have PFI0 and PFI1 as trigger. So, the DIO card starts capturing the data when PFI0=HI and PFI1 rising edge.  

     I am not sure if PXI-6562 is able to do that. I just want to avoid building any extra hardware. 

Thanks!

Andy

[Brian-G · Accepted solution]

Hi Andy,

Unfortunately, the PXI-6562 does not support combination triggering for acquisition from the PFI lines as you are describing.  A pattern match trigger can accomplish this, but only if using a combination of the DIO lines.  Otherwise, for generation, you could possibly implement this with two separate script triggers and a condition statement.  For you application, I would recommend using a simple gate circuit to let the trigger through when the other line is high.  An AND gate would also work.

Let me know if this helps, good luck!