Fast risetime pulses _are_ RF and need to be treated as such.
Tom
----- Original Message -----
From: "Tom Van Baak" <[email protected]>
To: "Discussion of precise time and frequency measurement"
<[email protected]>
Sent: Monday, September 15, 2014 9:43 AM
Subject: Re: [time-nuts] Correcting jitter on the 1
PPSsignalfromaGPSreceiver.
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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