Heinzmann, Stefan (ALC NetworX GmbH) wrote: > Thanks, Tom! > > Apart from the specifics with TimeView, how does one go about measuring ADEV > with a counter that does have a dead-time? Are there > tricks that can be played, either with a special measurement setup or with > some data postprocessing? Or with two counters that > are somehow made to cooperate?
Consider when you compare two PPS signals. If you counter has a dead time of say 100 ms then it is only a certain phase relationship which causes the counter to miss a count if you have a counter requiring channel A to trigger prior to channel B (or vice versa). If you have +/- TI mode then channel A or B can act as a start, and then the other channel acts like stop. Then you can hide the dead period as it dynamically shifts over. The trouble with dead time is much more annoying when you need to count the cycles of the signals. The PPS case does that counting without having dead-time, so we only need to handle the wrappings of those counters. > Sorry if I'm asking the obvious, you can see that I'm a greenhorn. ;-) It is a fair question. Besides, if Tom sent the question to Staffan, then it will be a little while since he is on vacation. Björn has a PM6681, he can actually TRY IT. :) 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.