[LinuxPPS] High values of jitter/estimated error.
Stefano Lucetti
s.lucetti at netserv.iet.unipi.it
Wed May 2 13:34:58 CEST 2007
It was defintely the reason. After changing from ASSERT to CLEAR, now I
get these results:
nx9005:/etc# ntptime
ntp_gettime() returns code 0 (OK)
time c9e2f505.27d04000 Wed, May 2 2007 13:31:17.155, (.155521),
maximum error 5372 us, estimated error 1 us
ntp_adjtime() returns code 0 (OK)
modes 0x0 (),
offset -286.000 us, frequency 39.032 ppm, interval 1 s,
maximum error 5372 us, estimated error 1 us,
status 0x1 (PLL),
time constant 4, precision 1.000 us, tolerance 512 ppm,
nx9005:/etc# ntpq -p
remote refid st t when poll reach delay offset jitter
*GPS_ONCORE (0) .GPS. 0 l 17 16 376 0.000 -0.297 0.007
and jitter is further reducing.
Thanks
Stefano
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