LabVIEW
Read Status of PXI trigger Bus/Lines in a PXI System
Solved!
Hello Everyone,
I'am developing an application in which one of the cards inserted in the PXI chassis will send a trigger signal on the PXI trigger line 0 of bus 1, while another card on a different slot is waiting for the trigger on the specified trigger line. Both these cards are third party cards (Non NI) which support triggering through its drivers and are inserted in the slots that comes under the chosen trigger bus range.( My chassis has 3 trigger buses). It seems my second card is not receiving the trigger. So i'm not sure whether my first card is actually generating a trigger on the specified line. So i would like to know whether there exists any technique to monitor the states of trigger lines in labview, so that i can check whether triggering is actually occuring or not.
Note: since the cards are third party, I have reserved PXI trigger line 0 in NI MAX settings for my chassis.
Awaiting prompt response. 
PXI cards used are MIL 1553B cards from Avionics Interface Technologies.http://aviftech.com/products/mil-std-1553/
Hello,
will it work if i use daqmx 'connect terminals. vi' and set source as pxi trg 0 and destination as a PFI line on one of my pxi cards and then connect a CRO to the pfi line. can i monitor the trigger signal using this method?
For some PXI chassis, the trigger lines need to be routed across the PCI bridges in the backplane. Are you sure your chassis does not have any breaks in the trigger lines? See the picture for an example.
Cheers,
mcduff
