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Thanks Bob, > It seems puzzling why the UDIAG2.EXE and UHFA driven programming > would be different. When you run UHFA , do you get the incorrect U108 > outputs, or is it just U107? The programming from UHFA consists of > sending the value for U107, U108 and the 126 MHz PLL to the DSP and > the actual programming is done as part of the interrupt processing. > With UDIAG2 it is much simpler, but the end results should be the > same !! When UHFA.EXE is running, U108 is correct, which voltage outputs are exactly same as when UDIAG2.EXE. Only U107 voltages are offset by 1. Very strange... > When I get a chance, I will look at he differences between the two > programs. For now, it would be helpful to see that the U108 voltage > outputs are also offset by 1 position. > > Your other IC voltages seem OK, although the Lock Detect is obviously > unlocked, as you have observed. The first step would seem to be > getting the serial programming to work. Ok, I hope I could get it to work. - Jiro, JQ2LMG