[time-nuts] Correcting jitter on the 1 PPSsignalfromaGPSreceiver.
saidjack at aol.com
Thu Sep 18 11:00:05 EDT 2014
You showed the effect of standard end-termination and no end-termination both while driving the cable with a mis-matched low signal source impedance. These are the same type of plots that Tom posted a link to last week.
The interesting plots will be when you set R1 to match the cable impedance and then vary R2.
Sent From iPhone
> On Sep 18, 2014, at 3:41, Didier <shalimr9 at gmail.com> wrote:
> Hi Tom,
> This page will show you the kind of problems to expect:
> Didier KO4BB
>> On September 15, 2014 8:43:21 AM CDT, Tom Van Baak <tvb at LeapSecond.com> wrote:
>> How important are all these cable / termination / impedance issues for
>> 1PPS signals? I know ringing and reflections are undesirable in many
>> applications. But for 1PPS?
>> I often use pick whatever cable, termination, and trigger level gives
>> the cleanest edge, the best risetime. What happens to the signal tens
>> or hundreds of nanoseconds after the edge seems irrelevant to me. Could
>> one of you RF experts comment?
>> time-nuts mailing list -- time-nuts at febo.com
>> To unsubscribe, go to
>> and follow the instructions there.
> Sent from my Nexus 7 tablet.
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
More information about the time-nuts