[time-nuts] PIC Divider Performance (was Re: time-nuts Digest, Vol 56, Issue 71)
phk at phk.freebsd.dk
Tue Mar 31 01:29:50 EDT 2009
In message <49D16637.60502 at febo.com>, John Ackermann N8UR writes:
>Therefore, the PIC divider is a bit above the 5370B noise floor, but not
Many years ago, I did a similar experiment, but to eliminate the
timebases from the measurement I used the PPS output as start
and the 10MHz input frequency as stop.
That way only the delay & jitter of the PPSDIV is measured (+ cables
& counters obviously).
The result were of similar magnitude.
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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