[time-nuts] FE-5680A adjustment screw?

Robert Benward rbenward at verizon.net
Wed Jan 18 15:51:07 EST 2012

I am sure some has covered this already, but does anyone know where I can 
get software or a command set to tweak the unit?


----- Original Message ----- 
From: "Chris Albertson" <albertson.chris at gmail.com>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Sent: Wednesday, January 18, 2012 1:34 AM
Subject: Re: [time-nuts] FE-5680A adjustment screw?

On Tue, Jan 17, 2012 at 7:00 PM, Robert Benward <rbenward at verizon.net> 
> Hi all,
> Anyone know what the little adjustment hole is on the side of the 
> FE-5680A? Is this a frequency adjustment? I tried adjusting it but nothing 
> happened. Was the adjustment range too small to see a change on a counter?

In the current batch of $40 units there is a screw yu can turn but it
is not connected to anything.  So it is useless.  You have to do the
adjustment using RS232 commands

Sme people have modified the fe5680 to make it work but as delivers
you need a computer or a small uP to adjust them.

Chris Albertson
Redondo Beach, California

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