| Re: [chrony-users] Re: Any nice example of chrony, WWVB, Raspberry Pi ? |
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- To: chrony-users@xxxxxxxxxxxxxxxxxxxx
- Subject: Re: [chrony-users] Re: Any nice example of chrony, WWVB, Raspberry Pi ?
- From: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
- Date: Tue, 22 Oct 2024 09:28:54 +0200
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On Mon, Oct 21, 2024 at 07:14:23PM +0000, Mike Collins wrote:
> [piclock]:</home/pi/> chronyc sourcestats
> Name/IP Address NP NR Span Frequency Freq Skew Offset Std Dev
> ==============================================================================
> PPS 6 3 77 +1999.734 5613.035 +1966us 36ms
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.
--
Miroslav Lichvar
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