Hi naugthy schoolboy Mark,
On 10/26/2017 01:30 AM, Mark Sims wrote:
No, you set up an oscillator so that is why you have that problem.
I hooked the two rubidiums together just to see what would happen. It pretty
much did what I expected... chaos... the time-nut equivalent of a naughty
schoolboy putting a microphone up to the speaker of the public address system.
I't's a tough job, but somebody gotta do it ;-)
In the music world, some really like caotic oscillators.
You just built a very expensive one. :)0
No, not really. The rubidium would be the real hold-over clock.
Symmetricom calls the disciplining state where it can't lock to the 1PPS signal the
"holdover" state. It's sort of like a GPSDO holdover state. Their discipline
firmware does let you set the time constant and damping values. I tried a little playing
around with them, but never found any settings that worked consistently well with the
LEA-5T.
Well, holdover is the behavior, but a typical design can have several
states which is deemed as hold-over. Everything else than tracking is
holdover.
Cheers,
Magnus
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