material missing triggers hdio? (PFI0)

I use (or rather try, for now) to use the HSDIO card for acquisition as follows:

Script generation according to schema: (l1, wrtcfg1, wrtlat are the wave forms long 1000clock)

script myscript

generate a l1

Repeat 10

generate a marker0 wrtlat (0)

generate a marker0 wrtcfg1 (0)

end repeat

end of script

Marker0 is exported (correctly) to PFI0. Same line is set up to run at acquiring data (records multiple, both start and advance Trig point to the same PFI0 signal). For test purposes I do this with SMA2164, where Channel 6 (wvfm sent to DUT) is connected directly to the ch4 (received wvfm of HAD) to get rid of the possible influence of the HAD. What worries me is that I seem to take _half_ of the signals I generate, rather than all. The attached vi has two loops of independent test, the generation timed a (every second, making the above script), which means generation 2xrepetitions (20 in the example above) trigger pulses on PFI0 (scope proves this hypothesis being right). However, the second for loop - part acquisition (iteration of 20 records each loop CQI, timeout 10 s), which should in principle work once by each iteration of loop generation runs only every second.

I would be grateful for my mistakes to score.

Michal

PS: Checked behavior on two different configurations, one with PCI-6562, second with PXI-6562. Both Miss the triggers of the PFI line (no difference which) in the present scenario.

Hello

I just read your message. In your case I would suggest using the Insider/Fetch combination rather than read (Fetch is better when you need to acquire data and expect that the triggers). It is also important to remember that you must initialize first acquire the task and then generate task (in your case first trigger is generated after 10 ms, which may not be sufficient for the task of acquiring start).

Please find sample application that:
1 initializes the acquisition of 1 s after tripping to Marker 0 (line 0 PXI)
2 generates the trigger (line 0 PXI) and 1 s data
3 generates 1 s of zeros
4 generates the trigger (line 0 PXI) and 1 s data

Task of acquisition has to read data only from points 2. and 4.

Hope this helps,
Best regards
Michal

Tags: NI Software

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