[time-nuts] Correcting jitter on the 1 PPSsignalfromaGPSreceiver.

Tom Miller tmiller11147 at verizon.net
Mon Sep 15 10:01:17 EDT 2014

Fast risetime pulses _are_ RF and need to be treated as such.


----- Original Message ----- 
From: "Tom Van Baak" <tvb at LeapSecond.com>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Sent: Monday, September 15, 2014 9:43 AM
Subject: Re: [time-nuts] Correcting jitter on the 1 

> 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?
> /tvb
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