[time-nuts] Thunderbolt schematics

Bruce Griffiths bruce.griffiths at xtra.co.nz
Tue Dec 11 23:23:19 UTC 2012


Magnus Danielson wrote:
> On 12/11/2012 11:50 PM, Azelio Boriani wrote:
>> I think that the TBolt's schematic(s) are sort of HolyGrail for 
>> TimeNuts.
>
> They are pretty simple, so I am amazed that there has been no major 
> attempt to reverse engineer them. The GPS front-end chip I haven't 
> been able to find a datasheet for, and then the CPU/GPS-baseband chip 
> seems to be an ASIC, but most pins should be fairly simple to explain.
>
> I have only one Tbolt, so I don't want to put that into pieces (again).
>
> Cheers,
> Magnus
>
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I have 4, two of which have had the low phase noise OCXO removed for use 
in a PN interferometer.
The TBolt output buffer has relatively high phase noise.

Bruce



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