N
NewYorkDave
Guest
Hello, all. I recently bought a used Tek T922 as a cheap, portable
alternative to my main scope (an ancient but reliable RM35A). The
'scope arrived the other day and it appears to work OK except for
intermittent vertical attenuator switches (a typical old 'scope
problem) and one other problem that seems a bit weird. Instead of
deflecting off the top or bottom of the screen, as it should, the
trace will "squash" when you reach approximately to the top or bottom
of the graticule. Obviously, this is bad, since it could lead you to
believe that your waveform is clipping in the equipment under test. Is
anyone familiar with what could be causing this problem?
Unfortunately, I don't have a service manual for the 'scope.
alternative to my main scope (an ancient but reliable RM35A). The
'scope arrived the other day and it appears to work OK except for
intermittent vertical attenuator switches (a typical old 'scope
problem) and one other problem that seems a bit weird. Instead of
deflecting off the top or bottom of the screen, as it should, the
trace will "squash" when you reach approximately to the top or bottom
of the graticule. Obviously, this is bad, since it could lead you to
believe that your waveform is clipping in the equipment under test. Is
anyone familiar with what could be causing this problem?
Unfortunately, I don't have a service manual for the 'scope.