Hi, Does anyone know what the correct output voltage is for R390a PTO? As = well, where does it peak and what the correct adjustment procedure for = transformer Z-702? I have checked one with a HP3400A and it had a peak = of 7.75 volts at 0 000 and 2.25 v at 0 500 and 0+000. I can't find = anything in the manual or on-line. Thanks, Doug