Hi, On 04/26/2017 06:29 AM, Jerry Hancock wrote:
Do typical frequency counters start their gate in phase with the incoming signal? I guess the answer would be, "It depends." I was just thinking about how I would program the STM32F7 counter I am designing.
No. The start of the gate arms the "start" event where you time-stamp the start event. The end of the gate arms the "stop" event. Variation can be that you start counting the gate time and arm it with a start event. Typically the internal gate time is counted in the coarse clock, so the time-resolution as given by interpolators always guarantee that the wished gate-time and actual gate time is never really the same. Rather, gate time is a guidance value but you then measure the actual length, and neither start or stop is on the same edge.
btw, Gilbert, a local time-nut, sold me a 5335 today so I will be able to buiild one great one out of the two I will have.
Not a bad first counter. It still does some tricks that none of my other counters do, and I kind of have a bunch of them by now.
Cheers, Magnus _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
