[time-nuts] Using Thunderbolt to Discipline FE 5680A?

[Bob Camp]

Hi

To use the current crop of FE-5680A's directly with the TBolt, you would
have to tear it apart and get a wire into the C field circuit. If you didn't
do that, you would have to stick a PC (or other controller) in between the
TBolt and the Rb. As they come from the vendors, there is no voltage control
capability in the units. There are so many flavors of this Rb that anything
said about them only applies to some of them. 

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Chris Albertson
Sent: Thursday, December 22, 2011 12:20 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Using Thunderbolt to Discipline FE 5680A?

On Thu, Dec 22, 2011 at 8:50 AM, Frederick Bray <fwbray at mminternet.com>
wrote:
> Has anyone successfully used a Thunderbolt to discipline a FE-5680A?
>
> I thought I saw a posting or site where someone disabled the 10 MHz
> oscillator on the Thunderbolt and used the Thunderbolt to discipline the
> FE-5680A.  However, I can't find it now.

I would not do it that way.  My plan is to leave the t-bolt as is and
then every 24 or so hours adjust the  FE-5680A if required to better
match the t-bolt.  My hope is that after some time the    FE-5680A
will less and less frequent adjustments.  This will be a while as my
FE-5680A is still in the mail.

I think the FE-5680A has to course of adjustment to be used in the
"fast" control loop inside the t-bolt


Chris Albertson
Redondo Beach, California

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