[time-nuts] Trimble OCXOs - 6525, ... and ...

[Chuck Forsberg WA7KGX]

On 07/06/2014 05:38 PM, Philip Pemberton wrote:
> Hi there,
>
> I've noticed a couple of Trimble OCXOs listed on "that auction site". 
> Specifically, model numbers:
>
>   - 65256
>   - 49423
>   - 34310 C1
>
> They all seem to be 12V, 10MHz, sine-wave units. Does anyone know if 
> there are any other differences between them? Do any specific ones 
> perform better than the others?
>
> There's a bit of a price difference between them, but data on Trimble 
> OCXOs seems to be quite sparse (a bit like data on their GPS modules, 
> really).
>
> Thanks,
I bought a replacement OCXO for a Thunderbolt whose OCXO had died.
The pinouts are different.
The housing is much taller and won't fit in the Thunderbolt enclosure.
The polarity of the VCO pin is different.

That said, I was able to get the kluge to work by changing the polarity 
of the loop gain.

-- 
      Chuck Forsberg WA7KGX   caf at omen.com   www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
   Omen Technology Inc      "The High Reliability Software"
10255 NW Old Cornelius Pass Portland OR 97231   503-614-0430