[time-nuts] Setting loop TC using thunderbolt internal data.

Bruce Griffiths bruce.griffiths at xtra.co.nz
Fri Jan 23 17:13:43 EST 2009


Tom Van Baak wrote:
> Has anyone hacked a TBolt yet to find which internal pin has
> a raw 1PPS from the GPS engine (as opposed to the 1PPS
> divided down from the OCXO)?
>
> /tvb
>
>   
Tom

The Thunderbolt manual (Page 1-1) makes it clear that there is no PPS
output pin from the GPS receiver itself.
There is also no internal TIC.
The phase and frequency errors are derived from the sampled GPS signals
without requiring an explicitly generated receiver PPS output.

Bruce




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