[time-nuts] Trimble 65256 OCXO info?

Frister frister at gmx.net
Tue Jun 9 07:57:34 EDT 2015


Bob,
I've used one for a simple 10 Mhz ref.
They are 12 V, and indeed the VFC is +2.5V
If you hold the OCXO upside down, the 2 pins at the top are GND and +12V
Bottom 3 Pins -> 10 Mhz, unknown and VFC

Frits W1FVB

On 09/06/2015, Bob Stewart <bob at evoria.net> wrote:
> Does anyone have any information about the Trimble 65256 OCXO?  I bought one
> recently and hooked it up to 12V per the vendor.  (Yeah, I know.)  Although
> it worked, it set off such a stench: the usual electronics burning up, give
> you a sore throat smell.  So, I got a replacement and same thing.  For fun,
> I hooked it up to +5V.  It seems to work, it drives the counter, but I
> haven't measured the output waveform yet.  So, does anyone know whether
> these are +12V devices, +5V, or something else?  The VRef output was
> somewhere around +2.5V, IIRC.
>
> Bob - AE6RV
>
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