Re: [AH] How to use an oscilloscope?

From Harry Bissell Jr
Sent Tue, Dec 9th 2003, 03:26

Now children (play nice...)

An oscilloscope probe has to match the scope its used with. A 10MHz
scope
can do with a $30 probe... this socpe does not need speed and low
capacitance.

A 100MHz scope will need a much more expensive probe... OR it will not
match
the scope input, and may act like a filter... either making ringing
appear that is not real,
or LPF filtering the signal so that your 100MHz scope works like a 10MHz

(this might be fine... most synths can be done with a 10MHz scope just
fine)

I suggest a 10:1 probe, or one switchable to 10:1... with the correct
capacitance for your
scopes.   This will allow proper adjustment and minimal circuit loading.

If you do not ABUSE them, scope probes will last the life of the scope.
A 20 year
investment write-off

Or have the scope LIE to you instead and go chasing ghosts in the
synthesizer that aren't really
there... maybe break it while you're in there wasting your time...

shop smart  :^P

H^) harry