[DSP-10] Udiag2 Values for Diagnostics

[Roger Hayward]

Greetings DSP-10 Group:

My DSP-10 appears to be up and running, wth the exception of a few 
additional tests I want to run before buttoning it up.  Serial Latches 
are latching, PLL's are locking, and I can hear my local SSB / CW 
signals (rx and tx) in the shack, etc.  I'm reading the archives from 
the past 12 months this evening to study more on getting the internal 10 
MHz system to pull down to frequency, etc.  (I'm about 5 KHz too high 
currently).  In addition, I'm hoping to get the VCO centered a little 
bit more such that I can see PLL lock across the entire band.

On that note, I'd like to modify UDIAG2.DSP to set the LO Synthesizer 
for values other than 126 MHz.  For 126 MHz, Bob has a value of 0, 
0x8FA1 , then 1, 0x8960 going to U104.  Has anyone studied the PLL in 
enough depth to determine the formula for setting other frequencies, 
such as 127 MHz, 128 MHz, etc. ?  (This is a perfect test bed for 
verifying the PLL will lock across the entire band).

Curious / 72,

    Roger Hayward
    rhayward@easystreet.com
    http://www.easystreet.com/~rhayward