[time-nuts] Symmetricom X72

paul swed paulswedb at gmail.com
Mon Aug 10 13:21:38 UTC 2020


German have you tried with the cover back on?
The external light in your picture could be affecting the system.
The color of the RB lamp looks about right and its nice and bright.
Also most Rbs I have worked on tend to insulate the various ovens and such.
Temperature matters.
Regards
Paul

On Mon, Aug 10, 2020 at 9:15 AM Germán Herrera <g.herrera at ses.com.ar> wrote:

> Hi everyone
>
> This is my first post on the list, tought I've been subscribed for some
> time.
> I'm in the process of troubleshooting an X72 which recently started to
> be unable to acquire lock. I've searched online for pics of this
> standard and wasn't unable to find anything, so i took some nice
> pictures which I'd like to share with you:
>
>
> https://drive.google.com/drive/folders/1HN8dms5CxPwUjdckEux2fOVTF5IoaI5u?usp=sharing
>
> After disassembling it I found that an optical filter which is supposed
> to be glued to the light path of the lamp was loose inside the unit. I
> attached it again but the issue persisted.
>
> If anyone is able any information about the thing (such as lamp working
> temperature, resonator temperature, lamp excitation frequency, etc..)
> I'd be grateful. It's sad that Symmetricom's manual is not able to
> provide any useful details.
>
> Cheers!
>
> --
> Germán Herrera
>
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