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

[Chuck Forsberg WA7KGX N2469R]

You could disable the Tbolt's oscillator and put the Rb output in its place.
Then write a program that reads the PPS and/or OSC offset and issue
appropriate commands to the Rb to bring it in line.

Call it Job4 as it will need the Patience of Job ^ 4.

On 12/22/2011 09:46 AM, Bob Camp wrote:
> 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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-- 
Chuck Forsberg WA7KGX N2469R     caf at omen.com   www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
   Omen Technology Inc      "The High Reliability Software"
10255 NW Old Cornelius Pass Portland OR 97231   503-614-0430