26 May
2008
26 May
'08
9:07 p.m.
Gerhard wrote about a 100 MHz oscilliscope:
For slow signals usually present in classical
hardware, thats no
problem.
That's true.
Many people have the mistaken belief that a 'scope with 20 MHz bandwidth
is adequate for looking at 20 MHz digital signals, but that is not true.
For digital signals you usually want bandwidth of at least five times the
peak frequency of the system, and preferably more. It's hard to
diagnose problems when fairly square edges on signals look like
sine waves on the 'scope.
Eric