I've restored a 492 back to life after re-building the power supply. The analyser seems to work except I'm not sure about the Time/Div control. When I set time/Div to Auto, the unit seems to work fine with the sweep rate changing as I adjust Bandwidth Resolution. If I set Time/Div manually the display looks normal except there is an exact replica of the wanted signal to the left of the display as I adjust the centre frequency these two signals merge then cancel out. Is this normal behaviour?
I have service manuals Vol 1 & 2 , was there also a separate instruction manual for this instrument.
Any advice or personal experience with these instruments would be welcomed.