[time-nuts] Oscillatek 2352

[Peter McCollum]

Bob wrote:

Oscillatek was acquired by K&L in the early 1980’s. K&L was acquired
by Dover in
the mid 1980’s. Dover acquired Vectron Labs in the early 1990’s. All
data on the
Oscillatek parts is long gone …. even to the person who ran the
company ( = me ) ….
Simple answer:
Hook up a power supply and feed the tune input. See what you get. On a
part that is
many decades old. That’s going to be far better data than anything
from “way back when”.

Thanks Bob! Just did some experiments.
Doing a Lissajous against a GPSDO, it is "real close" with about -100mV on
the CV input (about 20 min. warm-up).
The freq is inversely related to the CV voltage. Across a range of -12V
to +12V, the freq varies from about +10 Hz to -25 Hz.

I'm planning to hook it up as an external reference for an HP59309A clock.
Now my thought is to put a Schottky diode in the ground leg of the
oscillator (to raise the ground reference slightly), then use a trim-pot on
the CV input to fine-tune it.

Meanwhile, I'll build a self-contained GPIB controller to make setting the
clock more convenient. And I've got some other GPIB-capable instruments
that I can hook it up to.

Pete


On Wed, Aug 12, 2020 at 5:01 PM Peter McCollum <saipan1959 at gmail.com> wrote:

> Hi,
> Please excuse my remedial question. I am looking for basic information on
> an oscillator module marked as follows:
> Oscillatek 2352
> 10.00 MHz TCVCXO
> 5850-0000-012
>   0.0 Hz at 25C
> SN    DATE
> 42105   8707
>
> I understand that Oscillatek is now Vectron which is now Microchip.
> It has a 7-pin male connector on the bottom that appears to be a 7-pin
> vacuum tube style.
> I have hand-written notes indicating 12V, 10 mA power; and that pin 7 is a
> "Tune" input. Pins 2, 4, and 5 not identified. Pin 1 is wired to +12V via a
> diode.
> I gather that the "VC" in the description is "Voltage Controlled".
>
> I'm interested in things like:
> - What is the typical application?
> - What are the characteristics of the VC input?
>
> Thanks,
> Pete
>
>