Guest
Just curious, in cheap analog scopes (a mid-90's vintage 20 mhz unit
labeled by JDR micro) what is the main source of bandwidth restriction
- the vertical amplifier or the crt itself?
If one built a better amp, one presumably able to slew the capacitance
of the plates in the existing CRT more rapidly, would that increase the
useable bandwidth of the scope?
Of course to do more than show squarer fast square waves the timebase
would also need to be upgraded...
And the original probes probably are a limiting factor too...
labeled by JDR micro) what is the main source of bandwidth restriction
- the vertical amplifier or the crt itself?
If one built a better amp, one presumably able to slew the capacitance
of the plates in the existing CRT more rapidly, would that increase the
useable bandwidth of the scope?
Of course to do more than show squarer fast square waves the timebase
would also need to be upgraded...
And the original probes probably are a limiting factor too...