[PCR-1000] pcr1k pll synthesizer calibration?

[mikea]

On Sat, Feb 01, 2003 at 03:06:30PM +0100, Patrik Norqvist wrote:
> At 15:27 2003-01-31 -0800, you wrote:
> 
> >Since the offset is proportional to the tuned frequency, I'm going to assume
> >that it's the primary pll reference oscillator, and not one of the 2nd/3rd
> >stage mixer oscillators.  Is there any way to fine-tune the reference?  Are
> >there schematics available so I may find it myself on the board to attempt
> >a recalibration?  Are we lucky to have an adjustment for the pll reference
> >stored in the EEPROM?  And if so, which bytes are responsible for this
> >calibration?
> 
> There is a test check point CP4 inside the radio for the ref oscillator 
> output. With a good frequency counter you can adjust it to 10250000 Hz. I 
> will send an excerpt from the service manual (Acrobat .pdf file) about this 
> to your mailbox.

I would be _very_ grateful for a copy, too, as it appears that I 
have the same sort of problem. I have a good (and, oddly enough,
still in-calibration) counter, so this should present no problem.

Thanks in advance. 

-- 
Mike Andrews
mikea@mikea.ath.cx
Tired old sysadmin since 1964