Discussion:
Fwd: Symmetricom TS2100 Faults and Forgetfulness
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Chris Quayle
2018-11-26 18:32:56 UTC
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-------- Original Message --------
Subject: Symmetricom TS2100 Faults and Forgetfulness
Date: Mon, 26 Nov 2018 18:31:30 +0000
From: Chris Quayle <***@gfsys.co.uk>
To: time-nuts-***@lists.febo.com

Hi,

Question for the group. 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

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Gregory Beat via time-nuts
2018-11-27 17:38:04 UTC
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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: ***@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-***@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
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Bruce Lane
2018-11-27 17:53:13 UTC
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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. ;-)
Post by Gregory Beat via time-nuts
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

greg, w9gb
====
Subject: Symmetricom TS2100 Faults and Forgetfulness
Date: Mon, 26 Nov 2018 18:31:30 +0000
From: Chris Quayle
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
_______________________________________________
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)

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Steven Sommars
2018-11-27 19:18:03 UTC
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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.
Post by Bruce Lane
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. ;-)
Post by Gregory Beat via time-nuts
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.
Post by Gregory Beat via time-nuts
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).
Post by Gregory Beat via time-nuts
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

greg, w9gb
====
Subject: Symmetricom TS2100 Faults and Forgetfulness
Date: Mon, 26 Nov 2018 18:31:30 +0000
From: Chris Quayle
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
_______________________________________________
To unsubscribe, go to
http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
Post by Gregory Beat via time-nuts
and follow the instructions there.
--
---
Bruce Lane, ARS KC7GR
http://www.bluefeathertech.com
kyrrin (at) bluefeathertech dot com
"Quando Omni Flunkus Moritati" (Red Green)
_______________________________________________
To unsubscribe, go to
http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-***@lists.febo.com
To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
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