[time-nuts] Z3801A - notes on the hp58533a GPSDO

[Tim Shoppa]

"David I. Emery" <die at dieconsulting.com> wrote:
> 	Which leaves the other question,  from reading the 58540A
> literature, manual and other material available I concluded four years
> ago that it adjusted the 1 PPS timing to track GPS once locked to GPS by
> adjusting the EFC for the OXCO (I quite distinctly remember a statement
> being made in the documentation that the 1 PPS and 10 MHz phase
> relationship is fixed with no abrupt jumps of one clock tick in the 1
> PPS or 10 MHz once locked). I have not dug up the documentation recently
> to see if I can find this statement again, but I am pretty sure that it
> is true.

It's true by definition - it is a phase locked loop. You even
included the correct proviso about requiring lock. Contrast with
frequency locked loops (which are surprisingly awkward for most
applications) which seems to be some people's mental models.

Tim.