I would be most grateful for any help with this problem.
We have a DLP 4500 evm, and we have been successfully using the Trigger Output 1 on J14 to synch our camera acquisitions in step with the DLP patterns displayed from flash.
However, we would now like to have a "play once" pattern triggered by a signal going from low to high (3.3V) on Pin 2 of J11, i.e trigger input 1.
Pin 1 is confirmed by measurement as supplied with 3.3V, as one would expect with the Jumper placement.
That 3.3V is switched to produce the trigger signal on Pin2, relative to ground taken from Pin 3 of J11.
When setting up the flash pattern, we modify the previously working pattern by first setting it as "play once". When send and validated, it does indeed play once in response to the "Play" button in the GUI.
The next modification is to set "External Positive" in the trigger drop down dialog located in the pattern sequence tab, next to the color drop down.
The trigger input tab is left as default. The pattern is then sent with the "Send" button, and it also validates correctly.
However, applying a 3.3V pulse to Pin 2 of J11 does not cause the pattern to play. The play button will cause it to play once, and then it has to be validated again before the next "play", and so on.
Have we left out something important? Is the system designed to allow you to play a pattern once, in response to a single trigger input?
Thanks in Advance
