When I have an unknown OCXO, I put a scope on the output and connect a bench
power supply to the DC inputs. I bring up the voltage until the RF out hits
a stable level. That is where the internal regulator starts regulating. Then
set it to the nearest normal power supply voltage, +5, +12, +15, +24, +28
volts.
Some OCXOs will have separate inputs for the oscillator and the oven.
Example- an HP OCXO has a +15 regulated input that is switched for the
oscillator and a +24 volt input for the oven that is on always. I usually
try the same voltage as the oscillator first and watch the current as the
oven warms up. If it takes too long to heat up, try a little higher voltage.
Some units have a separate ground return for the oscillator and oven so you
need to watch that.
Good luck and thanks for the report.
Regards,
Tom
----- Original Message -----
From: "Peter Reilley" <[email protected]>
To: "Discussion of precise time and frequency measurement"
<[email protected]>
Sent: Friday, October 28, 2016 12:09 PM
Subject: Re: [time-nuts] Opening an Isotemp OCXO
The only document that I could find said 12 volt.
Pete.
On 10/28/2016 11:49 AM, Poul-Henning Kamp wrote:
--------
In message <[email protected]>, Peter
Reilley writes:
The chip is run off 12 volts so it must be CMOS.
Or the OCXO is not a 12V model ?
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
