Hi Terry,
I have two cards that I am trying to use: the 5764 digitizer (integrated FPGA) and a 7976R (modular FPGA) + AT1212 pulse generator adapter module.
I read that all FlexRIO cards after a certain version are synchronized to the 10 MHz backplane of the chassis.
After properly arranging the triggers, I was able to reliably acquire a waveform every trigger, although there is about 300ns of don't care samples before the acquired waveform. I'm assuming its due to delay in my set-up.
The only thing left to get it running at a basic level is a form of handshaking between the two cards. The order of operation is:
1. Pulse generation. PXI line trigger to digitizer
2. Acquire signal. Send acquire finished PXI trigger to pulse generator
3. Repeat X times
Currently, this is all implemented with control logic within the FPGA to set the PXI lines HI/LO. Let me know if you have any pointers.
Sincerely,
Dorino
