On 11/16/2013 03:13 PM, Chuck Harris wrote: > Random noise always converts into time jitter. It doesn't > matter how much you amplify the input signal, noise can push > the detected zero crossing wherever it wants to. You are missing that you can alter how much trigger jitter you get.
Cheers, Magnus > > -Chuck Harris > > Magnus Danielson wrote: >> On 11/16/2013 09:52 AM, Chris Albertson wrote: >>> Your method tosses out a lot of data. You can't see transients. >>> Ideally >>> rather then record a 1 second average you'd record the time of EVERY >>> zero >>> crossing. It sounds like a lot of data but not really. You only >>> record >>> 32 bits 60 times each second. That is 240 bytes per second. >> But you want it filtered to avoid the transients. Those are really not >> that interesting when you measure the grid. >> >> Also, if you use the event trigger method you probably want to use an >> amplifier to increase the slew-rate such that noise does not convert >> into time jitter. >> >> 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. >> > _______________________________________________ > 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. _______________________________________________ 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.