[time-nuts] Why are 1PPS signals so skinny?
mike cook
michael.cook at sfr.fr
Mon May 14 16:04:58 UTC 2012
Le 14/05/2012 17:23, Mark Sims a écrit :
> My first inclination, if I were building a timing receiver, would be to make the PPS output a nice, symmetrical square wave. But pretty much all GPS timing receivers output an anorexic, dinky little heroin addicted supermodel sized pulse (from 1 to 150uS wide is typical).
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NAVMAN Jupitr-T 26 ms
ONCORE VP ~200ms
UT+ 200ms
M12T 1PPS 200ms 100Hz 2-3ms
these are all timing receivers and the signals will trip serial
receivers without pulse stretching..
So the picture is not that gloomy.
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