I have just finished calibrating (as far as possible) a 2445B scope. I
was getting Test 04 Fail 02 error on startup, plus the dots/??????
across the readout at the bottom of the display. After calibration, I
am still getting this error.
The only cal I haven't done is "Cal 06 Vertical Transient Response",
as I don't have a tunnel diode pulser. Does anyone know if there is
alternative test gear I can use to do this cal, or if there is a way
to trick the scope into saving valid cal data?
Cheers.
