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 <[email protected]> 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: [email protected] > > — > > greg, w9gb > > > > ==== > > Subject: Symmetricom TS2100 Faults and Forgetfulness > > Date: Mon, 26 Nov 2018 18:31:30 +0000 > > From: Chris Quayle > > To: [email protected] > > > > 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 -- [email protected] > > 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 -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
