[time-nuts] Symmetricom TS2100 Faults and Forgetfulness

[Steven Sommars]

A nearby university used the HEOL boards in conjunction with TS2100s.  At
XX:59:01 every hour the NTP servers were off by one second.
Updating the TS2100 to the latest available firmware cured the problem.

On Tue, Nov 27, 2018 at 11:54 AM Bruce Lane <kyrrin at bluefeathertech.com>
wrote:

>         Thumbs-up for the HEOL replacement receiver. I've put 'em in both
> my
> 2100's, with outstanding results. Couple that with changing out the
> oscillators to OCXO's, and the result is enough to keep any time-nut
> happy. ;-)
>
>
> On 27-Nov-18 09:38, Gregory Beat via time-nuts wrote:
> > Chris -
> >
> > Did you update this TS-2100 with HEOL Design’s replacement GPS receiver?
> > Several time-nuts participants (and some scientific organizations)
> performed this update/upgrade (including me), replacing the obsolete
> TrimbleACE III GPS receiver.
> > http://www.heoldesign.com/N024-GPS-receiver-board-for-Tymserve-2100
> > —
> > On January 2015, TymServe 2100 servers started failing in the time
> displayed, and there was 1 second offset.  On May 3, 2015, the TS2100
> showed another bug, by displaying an incorrect date : September 17, 1995
> (1024 weeks earlier, GPS Week Number Roll-over).
> >
> > Symmetricom (Microsemi) published a note about this WNRO bug,
> > explaining that no fix was available (from Microsemi).
> > HEOL Design (France) developed a solution for these TS2100 issues.
> > http://www.heoldesign.com/IMG/pdf/heol-tech_note_119_en_r02.pdf
> >
> > HEOL DESIGN
> > Pôle Phoenix
> > Route du radome
> > 22560 PLEUMEUR BODOU
> > France
> > T: (+33)296 48 46 05
> > M:(+33)603 55 19 45
> > E: contact at heoldesign.com
> > —
> > greg, w9gb
> >
> > ====
> > Subject: Symmetricom TS2100 Faults and Forgetfulness
> > Date: Mon, 26 Nov 2018 18:31:30 +0000
> > From: Chris Quayle
> > To: time-nuts-request at lists.febo.com
> >
> > Hi,
> > Question for the group.
> > I have a Symmetricon TS2100 which has faults.
> > It's been some time since it was last used, but powered it up
> > recently to find that it had lost it's setup data, display showed
> > rubbish and the year is stuck at 1997, though the time of day is
> > accurate once it has achieved 1pps lock. Apart from that, everything
> > else looks ok. The display can be reset with the "root util display
> > 0x97900" command and the firmware was upgraded about a year ago to
> > the latest revision from the symmetricom site.
> >
> > Just wondering if it could be a faulty eeprom, but not managed to
> > find a schematic or service data for it, so difficult to debug at
> > a hardware level. Any suggestions would be welcome...
> >
> > Chris
> >
> >
> > Sent from iPad Air
> > _______________________________________________
> > time-nuts mailing list -- time-nuts at lists.febo.com
> > To unsubscribe, go to
> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> > and follow the instructions there.
> >
>
> --
> ---
> Bruce Lane, ARS KC7GR
> http://www.bluefeathertech.com
> kyrrin (at) bluefeathertech dot com
> "Quando Omni Flunkus Moritati" (Red Green)
>
> _______________________________________________
> time-nuts mailing list -- time-nuts at lists.febo.com
> To unsubscribe, go to
> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> and follow the instructions there.
>