[time-nuts] Advantest U3641 problem
Bob Camp
kb8tq at n1k.org
Fri Jan 16 12:05:04 UTC 2015
Hi
Usually (but not always) these are VCO drift issues. If you can spot a tuning adjust on that board you are lucky. A lot of this stuff is now done “no adjust” boards. They just swap out the board …
Bob
> On Jan 16, 2015, at 12:27 AM, Chuck Forsberg WA7KGX <caf at omen.com> wrote:
>
> My Advantest spectrum analyzer now comes up with an
> error 900 complaining about no PLL lock.
>
> This would appear to be a fault on the PLL board but the
> brain damaged Advantest service manual has no schematics
> for the boards.
>
> Any suggestions other than don't buy anything from Advantest?
>
>
> --
> Chuck Forsberg WA7KGX 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
>
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