[time-nuts] Datum TS-2100 Rubidium
rk at timing-consultants.com
Wed Jul 21 15:10:03 UTC 2010
...and according to the post from Greg Dowd (who was on the design team at
Datum), it had a 24V PSU as an add on for the option.
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Magnus Danielson
Sent: 21 July 2010 10:52 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Datum TS-2100 Rubidium
On 07/21/2010 10:11 AM, David C. Partridge wrote:
>> but the LPRO isn't designed (well, according to the spec) for GND !=
> So long as you don't introduce it to real ground (i.e. isolate it), it
> won't know that the -12V is floating below world ground :-)
Doable, but surely chassi ground of the LPRO is also tied to electrical
ground? Last time I looked around, it sure looked like things where tied to
If so you need to electrically isolate the whole LPRO. The 10 MHz is easy
enough with a transformer. The control signals would not be too hard.
Another solution is to let the -12 V lead also be chassi... which works but
is prone to errors...
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