Part Number: DLP6500FYE
I am working with a DLP Lightcraft 6500 EVM device running in "on-the-fly" pattern mode. I give the device a series of binary patterns, and then I use an external trigger to advance the frames. After receiving each trigger, the DMD displays a pattern for the "illumination time" which I can set in the GUI. After the illumination time ends, the mirrors move to the off state until the next trigger. However, the behavior I'm trying to achieve is: a pattern is displayed until another trigger is received, and then a new pattern is displayed. i.e. I would like to eliminate the dead time between frames, and I would like each frame to be on for an arbitrary amount of time (determined by when I send triggers to the device). Are there combinations of settings or trigger pulses that allow this mode of operations? In the past I have worked with the DLP 7000, and in that model this sort of behavior can be enabled using the ALP4.2 high-speed API by turning on "uninterruptible binary mode"
The various things I tried:
1) keep trigger input 2 always HIGH, and use trigger input 1 to advanced the frames. This works as long as the illumination time is less than the spacing between trigger pulses. If the illumination time is longer than the trigger spacing, the DMD appears to ignore the second trigger pulse.
2) start with both trigger inputs LOW. Turn both HIGH when I want a frame to display, then turn them off to stop the frame. Then turn both triggers HIGH again to display the next frame. However, after the second trigger, the DMD is still displaying the first pattern (i.e. when trigger input 2 goes LOW it pauses the pattern display, which is the documented behavior).