[time-nuts] How I got my FE-5680A to lock in Sydney, Australia

Jamieson (Jim) Rowe jimrowe at optusnet.com.au
Sun Feb 9 21:05:15 UTC 2014


Hi Magnus,

Thanks for your further comments. As you probably saw in my reply to Mark 
Sims, I am proposing
to check the swing limits 'before and after' inverting the unit, to check 
out the theory before I open it up and try tweaking C217.

Cheers,

Jim


-----Original Message----- 
From: Magnus Danielson
Sent: Sunday, February 09, 2014 7:34 PM
To: time-nuts at febo.com
Subject: Re: [time-nuts] How I got my FE-5680A to lock in Sydney, Australia

On 09/02/14 02:57, Jamieson (Jim) Rowe wrote:
> Hi Magnus,
>
> Thanks again for those further suggestions. I do have a GPSDO, and I had
> been able to use it with a counter to check that the FE-5680A was
> swinging either side of 10MHz. But I didn't make sure that it was
> swinging evenly each side of 10MHz . According to my notes it was
> swinging between  9.999770 and 10.000036MHz -- i.e., about 230Hz low and
> about 36Hz high. But it was spending more of the time below 10MHz than
> above -- does this suggest to you that I should tweak C217 until it
> swings by about the same amount either way?

Yes, that is exactly what I would do.

Cheers,
Magnus

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