[time-nuts] HP10811 dual oven
bill.riches at verizon.net
Tue Aug 4 07:32:42 EDT 2015
I would appreciate it also. Thank you.
From: time-nuts [mailto:time-nuts-bounces+bill.riches=verizon.net at febo.com] On Behalf Of Alexander Pummer
Sent: Monday, August 03, 2015 8:14 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] HP10811 dual oven
I would be interested on that document too Thank you in advance
On 8/3/2015 12:40 PM, Dan Kemppainen wrote:
> If you search the internet, you should come across a design by Warren
> S. It's basically the same type of oven controller that is used in the
> internal oven for that oscillator.
> I did a surface mount version of his design a while back. I've been
> running it for quite a while now. IMO it is helping to reduce the
> thermal drift of the oscillator.
> Bob has pointed out in the past that the outer oven was not intended
> to be active all of the time. This is probably true. That said it
> seems to help in my setup.
> If you are unable to find the documentation, please let me know. I can
> try to dig it up when I get home.
> On 8/3/2015 12:00 PM, time-nuts-request at febo.com wrote:
>> The “external” heater on the Z3801 OCXO is only needed if you are
>> regularly running below -20C in your environment. Other than the
>> alarm signal, there is no harm in letting it simply shut off forever.
>>> >On Aug 2, 2015, at 8:56 AM,timeok at timeok.it wrote:
>>> >I have seen, but I do not remember where, someone have rebuilt the
>>> external oven controller to complete a stand alone OCXO removed from
>>> an HPZ3801A.
>>> >Can you hep me to find the document?
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