Tool/software:
Hi Gary,
you closed our case... I have a follow-up question on "DLP651NE: dithering and flickering question", linked to this question.
we continued and did more testing by placing a fast Si detector under the DMD projector. and got following result:
the yellow signal is the signal LED_EN_RED from J97 Pin 4 and the red signal is the signal from Si detector indicating when dithering or flickering occurs. we need to know when flickering occurs to turn off the LED.
however, use of signal LED_EN_RED from J97 Pin 4 is is hard to use for this because the falling edge does not always correspond to this time period. In other words, only every other falling edge corresponds to the dither.
we need to know exactly when flickering or dithering occurs. can you please advise what pin to use or what to do to get corresponding 60Hz flickering or dithering. I am talking about dithering/flickering (whatever you call it correctly) where you mentioned following in linked thread==>
"... all of the mirrors to move fully (+/- 12 degrees) at least once per 60Hz frame time, even if the video data is full white or full black for a long period of time. The illuminators (RGB illuminator enables / strobes) are disabled / off during this time, so this is not visible on the screen in a video application."
we can see it via optical detector but using electronic signal LED_EN_RED from J97 Pin 4 is is hard to use for this. It is because the falling edge does not always correspond to this time period. In other words, only every other falling edge corresponds to the dither.
thanks for URGENT response.
thanks
Babak.