[time-nuts] Datum TS-2100 Rubidium

Rob Kimberley rk at timing-consultants.com
Tue Jun 29 13:53:07 UTC 2010

I seem to remember that we did a field upgrade on a TS2100 to add an LPRO
when I was selling Datum stuff in the UK in the mid/late 90's. It did bolt
on the chassis, with a small  PSU mod board, and I believe a firmware
upgrade included. 

Unfortunately I don't have any info on file any more. 

If Greg Dowd at Symmetricom is lurking on this site, maybe he could point
you in the right direction.

Rob Kimberley

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Julien Goodwin
Sent: 29 June 2010 12:27 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Datum TS-2100 Rubidium

On 28/06/10 21:36, Julien Goodwin wrote:
> Up next is to convert the darn thing to Rubidium, like it was meant to 
> be when I purchased it (insert rant here).

OK so the pinout vaguely matches, the TS-2100 is *very* twitchy on the alarm
circuits, even a 1Mohm scope (well, it's 1M in theory, cheap
Rigol[1]) tripped it to reboot a few times.

But where in the world are you supposed to *put* the darn LPRO oscillator,
it's too tall to fit above the board, and there doesn't look to be enough
room between the back of the front panel and the main board.

I'm also not sure about the power supply thing, seeing only the single post
to time-nuts about it.

I'd love photos, but I'd assume that most people that have one it sits in a
rack running.


1: Actually 'tis one of the 50Mhz units "hacked" to 100Mhz operation, a very
nice Tek 11k analog scope was reserved, but the seller appears to not want
my business going silent after several prods.

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