I don't know about older marine chronometers but modern ones tick much faster
than 1 pps. Most are designed to tick 28800 pph, which is 8 ticks per second.
One jump per second is pretty much a quartz watch thing.
---------------------------------------
(Mr.) Taka Kamiya
KB4EMF / ex JF2DKG
On Thursday, January 30, 2020, 12:44:49 PM EST, Bill Slade
<slade_b...@hotmail.com> wrote:
Just a thought, as I have no experience with mechanical clocks. Couple your
atomic clock 1pps signal to a mechanism that weakly mechanically couples to
your chronometer spring-mass-escapement system in some way (assuming 1 tick per
second natural frequency for your chronometer). Rely on the entrainment
phenomenon to synchronize the mechanical clock to the electrical signal.
Cheers!
________________________________
From: time-nuts <time-nuts-boun...@lists.febo.com> on behalf of Tom Bales
<tob.starho...@gmail.com>
Sent: Thursday, January 30, 2020 4:49 PM
To: time-nuts@lists.febo.com <time-nuts@lists.febo.com>
Subject: [time-nuts] Cesium Mechanical Chronometer
>
> And now for something completely different: I am working on a quixotic
> project to control a standard, detent-escapement marine chronometer (e.g.,
> Hamilton 21) with a CSAC cesium atomic clock module. Yes, I know this
> makes no sense--but, then, we're timenuts. I want the mechanical
> chronometer to function normally if the CSAC signal, presumably a 1pps
> pulse, is lost. The CSAC will be GPS disciplined, so during normal
> operation, with an operating GPS constellation, the time is referenced to
> UTC via GPS; if GPS is lost, then the CSAC takes over and its 1pps signal
> drives the chronometer; if all electronics are lost, the chronometer hangs
> in as a mechanical chronometer. Has anyone any experience with
> electrically controlling (or disciplining) a marine chronometer?
>
>
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