[time-nuts] Equipment question: OCXO versus GPSDO + XTAL

[paul swed]

Welcome to the group Wolfgang
My thinking would be go with the T bolt at a fraction of the cost of the
oven.
See if that takes care of your needs. If not add the oscillator later?

Regards
Paul.

On Thu, Mar 17, 2011 at 8:59 PM, Wolfgang <timenuts at triplespark.net> wrote:

> Hi,
>
> I'm new on this list.
>
> Right now, I'm planning to buy a brand new Agilent 53230A frequency
> counter (350 MHz, 20 ps, 12 digits/s, 2500 EUR).
>
> I'm wondering whether it is worth investing into a built-in OXCO timebase
> option when ordering the 53230A since that adds 950 EUR.
>
> The alternative would be to go with the standard timebase and connect
> a GPSDO like the TBolt or a Rb-based oscillator to the 10MHz reference
> clock input. Or, to use the both OCXO option AND the GPSDO/Rb clock.
>
> Opinions needed based on experience with other devices: Would you think
> buying the 53230A with a built-in OXCO timebase gives better performance
> for any measurement than using the standard clock with an accurate external
> reference?
> Or, how would "OCXO option + GPDSO" compare to "standard osc + GPDSO"?
> (Especially for usual gate times 10ms to 10s.)
>
> Regards,
> Wolfgang, DL1SKY
>
>
>
> Known specs are:
>
> Standard oscillator:
>  ??? / day
>  0.2 ppm / month
>  1 ppm / year
>
> OCXO option:
>  0.3 ppb / day
>  10 ppb / month
>  50 ppb / year
>
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