Chuck if its not a totally integrated PLL board then you might reverse engineer it and go from there. As Bob says thats harder and harder to do because adjustments are done in software and theres a big black chip with no clue these days. Technically speaking WAS (we are screwed). :-) Or in a sentence it WAS working. Regards Paul WB8TSL
On Fri, Jan 16, 2015 at 7:05 AM, Bob Camp <kb...@n1k.org> wrote: > 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 <c...@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 c...@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 > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
