[DSP-10] Problem wirh +10R

[Ton Bouw]

Hi there,

I am busy testing my DSP-10 and I seem to have some problem.
It all checks out fine till I measure +10R, it's at 0V
PC operation appears ok, but I do have a msg "E30 PLL unlock".
I have been trying to solve the +10R issue first...

After power up +10R is at 10V, it turns off when UHF3 starts up.

During startup of UHF3.EXE I see activity on SERIAL DATA, SERIAL CLOCK =
and DATA LATCH, the same activity is repeated when UHFA.EXE is started.
When I switch between Rx and Tx using HOME, I see activity on SERIAL =
DATA and SERIAL CLOCK, but now DATA LATCH is always at 5V.=20
Is DATA LATCH s/w disabled when the PLL is not locked? Maybe there is no =
lock because also initialisation of U104 went wrong?=20

Thanks for any help.

Ton, PA0TBR



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