[time-nuts] Expected behaviour from net4501, oncore and ntpns?

[Toby Riddell]

Thank you. I also had a reply off-list with some documentation so I will
attempt the fix described therein.

On Sun, Jan 13, 2019, 04:31 Anders Wallin, <anders.e.e.wallin at gmail.com>
wrote:

> from 1995-05-28 to 2019-01-11 is exactly 1024 weeks, do your receiver has a
> GPS-week rollover problem...
>
> On Sat, Jan 12, 2019 at 12:16 AM Toby Riddell <toby.riddell at prevtec.com>
> wrote:
>
> > Hi all,
> >
> > I got my Soekris net4501 hooked up to an oncore module and antenna and
> > ntpns has been talking nicely to the oncore. After a couple of hours it
> > started to serve NTP to a client however the time shown for the net4501
> on
> > the NTP client is approx. 600s slow (see last line):
> >
> > $ ntpq -p
> >      remote           refid      st t when poll reach   delay   offset
> > jitter
> >
> >
> ==============================================================================
> > *reverb.baxterit 213.251.128.249  2 u   78  256  377   17.859    0.575
> >  2.196
> > +k8s-w01.tblflp. 152.2.133.53     2 u   12  256  377   17.992    2.945
> >  1.153
> > +ip225.ip-54-39- 213.251.128.249  2 u  260  256  377   18.229   -0.193
> >  1.611
> > x192.168.1.44    .GPS.            1 u   18  256  377    0.830  -619315
> >  0.484
> >
> > Also the time of day displayed in 'show oncore 0' is correct, but the
> year
> > is wrong (I've obfuscated the position data in the output, but it's
> > essentially correct):
> >
> > show oncore 0
> > serial port = /dev/cuau1
> > state = 12      visible/track/lock = 13/2/0     dop = 0.0 [m]
> > 1999-05-28 22:02:02.000016953
> > Leap second info: 2017-01-01 00:00:00 NONE
> >             555299878 seconds (6427 days) from now
> > lat = xxxxxxxxxxx (xx.xxxxxxxxx), lon = xxxxxxxxxxx (xx.xxxxxxx), ht xxxx
> > (xx.xx)
> > http://maps.google.com/maps?ll=xx.xxxxxxx,xx.xxxxxxx&spn=0.03,0.08&t=k
> > rcv_status = 0x8 = AcqSat/PosHold
> >         utc_offset = 18
> > site_survey = 2 (~3073 sec left)
> > Sat Dopler Elev Azi Health Mode SigStr IODE Status Offset
> >   8   3828   12 180   00     8    41      0    a2  0.134221487
> >  23    969   62 279   00     3     0      0    20  0.385877161
> >  26  -2039   55  52   00     3     0      0    20  0.436211366
> >  27   3287   32 157   00     8    46      0    a2  0.452988591
> >
> > Output from 'show source' and 'show oncore 0 version' is:
> >
> > show source
> > Source oncore_0: votes 3.000000 flags <UTC> los 0/15 update 1 SELECTED
> >         limit 1.280000e-01              No leapsecond at end of today
> >         stratum 0                       refid [GPS]
> >         delay 0.000000000               dispersion 0.000000512
> >         last_ts  927928914.000000102    last_delta 0.000000103
> >
> > show oncore 0 version
> > @@Cj
> > COPYRIGHT 1991-1997 MOTOROLA INC.
> > SFTW P/N #     98-P36848P
> > SOFTWARE VER # 3
> > SOFTWARE REV # 1
> > SOFTWARE DATE  May 28 1999
> > MODEL #    R5122U1154
> > HWDR P/N # 5
> > SERIAL #   R0ANKH
> > MANUFACTUR DATE 0M19
> >
> > I see that the site_survey is still happening - will things correct
> > themselves if I leave it long enough?
> >
> > Toby
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