how to monitor the Vsyn (vertical sync) signal on DLP lightcrafter 4500 board?

Thank you for your reply. Sorry I forgot to mention that the board I'm using is DLP light crafter 4500 (now added). The VSync is the vertical sync signal from the video input. I can't find J2 on my board. It seems the user manual doesn't provide enough information for me to find the correct connector. 

Ying

Hi Ying,

Thank you for the clarification and for adding "4500" to the subject/title. I've just moved this to the DLP LightCrafter 4500 forum for proper answer.

Regards,
A214529

Hi Clinton,

Thank you for your reply. I find the TP2 on the board, but it's really small. Do you have some tricks to measure this point by oscilloscope? Thank you.

Ying

You cannot touch it with your scope probe?

Yes, I can. I thought that hold the probe by hand is not stable enough but I can try that. Thanks.

Probing by hand should be fine. If you want to clip a probe, you could solder a wire to the test point and clip onto the wire.