[time-nuts] Austron 2010B possibilities?

[John Ackermann N8UR]

Hal Murray said the following on 02/11/2007 01:32 PM:
>> I had a thought, though -- would it be a worthwhile exercise to use
>> the 2010B as a cleanup oscillator following my HP 5061A cesium?
> ...
>> By the way, the 2010B has three loops, presumably phase, frequency,
>> and aging.  The first loop has selectable time constants of 5, 250, or
>> 5000 seconds; the second loop is 50,000 seconds, and the third loop is
>> 200,000 seconds. 
> 
> What sort of crystal is in the 2010B and how does it compare to the one in 
> the 5061A?
> 
> Is the cleanup coming from a better chunk of quartz or better software/PLL?

The 2010B has an Austron 1150 oscillator, the same one used in the 1250A
standard and the 1210D portable clock.  It has very respectable
specifications (similar to 10811).

I think the interesting question is whether the short-constant loop is
clean enough to give an improvement over the Cs oscillator with its 1 or
2 second loop to the Cesium beam.  I suspect that maybe the 250 second
first loop might be the optimum for this situation; the 5000 second
probably makes more sense when hooked to a noisier LORAN-derived signal.

John


John