[time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

Guido Küppers guikueppers at t-online.de
Fri Aug 16 08:29:07 UTC 2013


Been there, done that. 
The RFTGm-RB can be disciplined if you connect the pps and the gps data stream coming from a motorola Oncore. 
Regards
Guido


Von Samsung Mobile gesendet

Rex <rexa at sonic.net> hat geschrieben:

I don't think the rubidium module for these systems can be disciplined. 
I think they were only intended as a backup if the XO section or GPS 
failed. The XO section does discipline but I don't know the details.

I'm not sure of the model number, Lucent had several variations on the 
same theme in that time frame. I had one of the rubidiums that may be 
the same as yours. Trying to trace out some of the circuits, I found 
that the EFC on the LPRO connector was not being used at all.


On 8/15/2013 7:52 AM, Alan Kamrowski II wrote:
> Hi Everyone,
>
>   
>
> I've only got the RFTGm-II-Rb module.  I found an interface cable
> specification here:
>
>   
>
> http://www.ko4bb.com/Manuals/05%29_GPS_Timing/RFTG-m/RFTGm%20Interface%20Cab
> le.pdf
>
>   
>
> Does anyone know if feeding a 1pps signal to pin 9 might discipline it?  Or
> does it need the other connections such as GPS data, etc.
>
>   
>
> Is there a ground on this connector?
>
>   
>
> Thanks!
>
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