Re: Any nice example of chrony, WWVB, Raspberry Pi ?

[email protected] Tue, 22 Oct 2024 08:44:51 -0700

Newsgroups	gmane.comp.time.chrony.user
Message-ID	<[email protected]>

On Tue, Oct 22, 2024 at 09:28:54AM GMT, Miroslav Lichvar wrote:

> These values are bad. A well-working PPS source should show much
> better skew and std dev. A rpi should be capable of getting below 1
> ppm and 100 microseconds. I suspect there is still something wrong
> with your setup. Maybe some noise is picked on the GPIO.

Here are mine:

 3+0 ~$ chronyc -N sourcestats
Name/IP Address            NP  NR  Span  Frequency  Freq Skew  Offset  Std Dev
==============================================================================
PPS0                       10   7   145     -0.000      0.010     -1ns   292ns

RPi 3B + bookworm, Uputronics GPS hat

-- 
Ian

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