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TS2100: Upgrading oscillator?

BL
Bruce Lane
Thu, Dec 22, 2016 11:19 PM

Good day,

During recent repair efforts on my Symmetricom TS2100, I noticed the

main PC board has silkscreening, and hole patterns, to cover different
types of crystal oscillator.

Might it be possible to upgrade from the standard unit (a DIP-14 form

factor clock oscillator) to, perhaps, an OCXO?

Anyone have a 2100 they can share pictures of? Or, perhaps, one which

has been upgraded?

Just wondering...

Thanks.

--

Bruce Lane, ARS KC7GR
http://www.bluefeathertech.com
kyrrin (at) bluefeathertech dot com
"Quando Omni Flunkus Moritati" (Red Green)

Good day, During recent repair efforts on my Symmetricom TS2100, I noticed the main PC board has silkscreening, and hole patterns, to cover different types of crystal oscillator. Might it be possible to upgrade from the standard unit (a DIP-14 form factor clock oscillator) to, perhaps, an OCXO? Anyone have a 2100 they can share pictures of? Or, perhaps, one which has been upgraded? Just wondering... Thanks. -- --- Bruce Lane, ARS KC7GR http://www.bluefeathertech.com kyrrin (at) bluefeathertech dot com "Quando Omni Flunkus Moritati" (Red Green)
RW
Robert Watzlavick
Sat, Dec 31, 2016 3:17 PM

Bruce,
Check out the archives around 3/2011 and 6/2015 for some discussions
about upgrading the TS2100 to an OCXO.  Gerhard Wittreich's post on
6/6/2015 describes the process.  Greg Dowd from Symmetricom added quite
a good bit of info to the discussion in 2011 so be sure to check out
those messages too.  The intended OCXO is an MTI 240-0530-D (see
attached pic) but is a custom part.  It was not available when I
upgraded my unit so I used a different OCXO that I put on a small
perfboard and wired in. There were some available on eBay last year but
now they're gone. The EFC range is 0-6V but I believe the onboard DAC
only drives it from 0.5 to 4.5V.  The OCXO datasheet is available on
Manuals section of the KO4BB site.

-Bob

On 12/22/2016 05:19 PM, Bruce Lane wrote:

Good day,

During recent repair efforts on my Symmetricom TS2100, I noticed the

main PC board has silkscreening, and hole patterns, to cover different
types of crystal oscillator.

Might it be possible to upgrade from the standard unit (a DIP-14 form

factor clock oscillator) to, perhaps, an OCXO?

Anyone have a 2100 they can share pictures of? Or, perhaps, one which

has been upgraded?

Just wondering...

Thanks.
Bruce, Check out the archives around 3/2011 and 6/2015 for some discussions about upgrading the TS2100 to an OCXO. Gerhard Wittreich's post on 6/6/2015 describes the process. Greg Dowd from Symmetricom added quite a good bit of info to the discussion in 2011 so be sure to check out those messages too. The intended OCXO is an MTI 240-0530-D (see attached pic) but is a custom part. It was not available when I upgraded my unit so I used a different OCXO that I put on a small perfboard and wired in. There were some available on eBay last year but now they're gone. The EFC range is 0-6V but I believe the onboard DAC only drives it from 0.5 to 4.5V. The OCXO datasheet is available on Manuals section of the KO4BB site. -Bob On 12/22/2016 05:19 PM, Bruce Lane wrote: > Good day, > > During recent repair efforts on my Symmetricom TS2100, I noticed the > main PC board has silkscreening, and hole patterns, to cover different > types of crystal oscillator. > > Might it be possible to upgrade from the standard unit (a DIP-14 form > factor clock oscillator) to, perhaps, an OCXO? > > Anyone have a 2100 they can share pictures of? Or, perhaps, one which > has been upgraded? > > Just wondering... > > Thanks. >
MS
Majdi S. Abbas
Sat, Dec 31, 2016 3:41 PM

Bruce,

Based on information previously posted here I was able to do this earlier this year.  I wrote it up:

https://aerographic.tumblr.com/post/139872571444/datumsymmetricom-ts2100-irig-ocxo-heol-n024-gps

You're looking for a low profile MTI 240 OCXO.  That would be easiest, but many others will work.

Let me know if you have any questions.

Cheers,

--msa

Bruce, Based on information previously posted here I was able to do this earlier this year. I wrote it up: https://aerographic.tumblr.com/post/139872571444/datumsymmetricom-ts2100-irig-ocxo-heol-n024-gps You're looking for a low profile MTI 240 OCXO. That would be easiest, but many others will work. Let me know if you have any questions. Cheers, --msa