[time-nuts] Re: Spectracom 8143 GPS Disciplined Osc

[Bob Camp]

Hi

Looking at the manual, the main thing I’d probably check is additive phase noise through 
the beast to each output channel. Its sort of an odd thing to set up on a bench, but not insane
to do. 

Next I’d check the levels on the level detectors to make sure they switch in / switch out
at the right points. 

Past that there’s the normal output level and harmonics sort of checking. 

If indeed there are some GPSDO’s in the mix as well as the switches, they may need
looking at as well. What you do depends a bit on just what they are. 

Bob

> On Jan 12, 2023, at 5:06 PM, Shawn via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> Hey Guys,
> 
> I may have do a cleanup and refurb on some fairly old Spectracom 8143
> Disciplined Oscillators.  Are there some good resources and/or places
> to look for proper Care and Feeding type information?
> 
> They are being used in a communications system to synchronize Simulcast
> Communications as well as an older TDM style voice switch.  There are
> two in an A/B backup configuration.
> -- 
> Sincerely,
> 
> Shawn Tayler
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