Joe,
Good guess. It's a 10811 with an additional oven wrapped around it for
better thermal control. I'll check it in a couple days when I get home. Is
this thermal fuse on the outside?
Anyone have a schematic of this unit?
Bob
----- Original Message -----
From: "J. L. Trantham" <jlt...@att.net>
To: "'Discussion of precise time and frequency measurement'"
<time-nuts@febo.com>
Sent: Tuesday, November 01, 2011 12:21 AM
Subject: Re: [time-nuts] Z3801 EFC error
I think it uses a 10811 OCXO. See if it is warm. If not, perhaps the
'thermal fuse'?
Joe
-----Original Message-----
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Bob
Sent: Monday, October 31, 2011 11:17 PM
To: time-nuts@febo.com
Subject: [time-nuts] Z3801 EFC error
Hi,
My Z3801 just crapped out. It seems that the DAC has ramped up to the
rails, 1048560, and I'm getting an EFC fault. Any tips before I open the
unit and start poking around? The oscillator is running and pretty close
to
10MHz, I don't have any reference accurate enough to check it. Any trends
here, is it the EFC in the oscillator or is it the DAC and following
amplifiers?
Thanks, Bob
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