I would like to use 9210 as a stopwatch with selfmade IR gate. Would it be possible to connect IR gate output to one of the sockets of 9210 and use that for timing trigger. Some pin of serial cable ? What about the clock in 9210 ? What is the tick ? Can it do 10ms accuracy ? I didnt find easily any documents that would help me so i ask this way, because i know some of you know if that would be possible in first place at all. Thanks.