[ntp:questions] Raspberry Pi error in PPM offset
david-taylor at blueyonder.co.uk.invalid
Fri Aug 23 03:45:38 UTC 2013
On 23/08/2013 03:27, JP wrote:
> I have access to an accurate frequency counter that I use to measure the Pi's actual crystal frequency. I find that the PPM error reported by NTP differs from the real PPM error consistently by about 2.5 PPM. i.e. when measured over a time period of several days, the difference between the actual PPM error and the reported PPM error varies slightly above and slightly below 2.5 PPM.
> I'm suspecting that there is a configuration issue in the RPi kernel, but, being new to NTP, I'm not sure where to begin looking. Any suggestions?
James, is the average PPM about right? I'm not sure you can expect more
More information about the questions