BNC 725 - Manual (Page 46)

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5. On Channel A’s Logic tab, enter: inA = not in1;. Click Apply.
6. On Channel B’s Properties screen select Delayed Pulse After Trigger mode.
7. On Channel B’s Delay tab set both the Delay after trigger and Duration of pulse to 100 ms.
8. On Channel B’s Triggering Tab select Normal to allow retriggering.
9. On Channel B’s Logic tab enter: inB = outA; This logic will cause the delayed trigger to
pulse 100 ms after a signal from Channel A.
10. Click Apply.
11. On Channel C’s Properties screen select Dynamically Delayed Pulse mode.
12. On Channel C’s Scaling tab select 2^N and set N = 1.
13. On Channel C’s Delay tab set the Added Delay to –200 μs and the Duration of pulse to 100
ms.
14. On Channel C’s Triggering tab select Normal to allow unlimited retriggering.
15. On Channel C’s Logic tab enter: inC = outA or outB; This logic routes the two pulses from A
and B to channel C. Note that there must be no overlap of these pulses or the dynamic delay
will not work properly.
16. Click Apply.
17. Go “online.”
Now the test is ready. Depress and hold the external trigger button. Output A will transition high,
causing the delayed trigger in Channel B to begin its count. When Channel B sends its output
pulse, the dynamic delay in Channel C will calculate the time difference (100 ms), multiply it by
32/16, and subtract the 200 µs offset. 199.8 ms after receiving the signal from Channel B, Channel
C will send a 100 ms output pulse.