[time-nuts] FE-5680A C-field trimer ??
Brian Kirby
kirbybq at bellsouth.net
Mon Aug 25 01:37:10 UTC 2008
There are several models of the 5680A. A lot use the DDS circuits to
set the output frequencies and they do not have C field adjustments.
Brian - KD4FM
wje wrote:
> Unless you can measure the frequency to at least a few parts in 10e10,
> you won't see any change.
> These devices are far more precise than standard frequency counters.
> You either need something like an HP 5370 or 5371 to measure the
> difference, or another equally precise oscillator to compare against
> using a phase meter or your oscilloscope.
> Bill Ezell
> ----------
> They said 'Windows or better'
> so I used Linux.
>
> Rex wrote:
>
> Have you adjusted it? I tried tweaking that pot on one I had and I
> didn't see any effect.
>
> wje wrote:
>
>
> There's a small hole on the side of the case.
> This is the trimmer access, at least on mine.
>
> Bill Ezell
> ----------
> They said 'Windows or better'
> so I used Linux.
>
>
>
> EMMANOUIL MANTZARAS wrote:
>
>
>
> Hi
> Is there any one that knows where is the c-field trimer in the FE-5680A board
> ??
> Thanks
> sv1bke
>
>
>
>
>
>
>
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