Probe BW vs o-scope BW

[Lance Morgan]

This has been asked before, wrt to capacitance, but I'm still not clear
on it...

Ex: 250MHz x10 passive probe | 20MHz scope (automotive use)

_If_ the probe can be (low-freq) compensated, with the scope's 1kHz test
signal - fairly square wf and compensation trim adjustment range not
maxed out to one side - will this 250MHz probe display as accurately as
a (also compensated) 40MHz or 60MHz probe?

Or will a flatter compensation pattern be possible, and subsequent dx
display/waveforms be more accurate w/the latter?

Thank you,
Lance

 

[Jerry G.]

The wider the response of the probe, the better it is. I use a 100 mHz
scope on my bench, and use 500 mHz probes.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
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This has been asked before, wrt to capacitance, but I'm still not clear
on it...

Ex: 250MHz x10 passive probe | 20MHz scope (automotive use)

_If_ the probe can be (low-freq) compensated, with the scope's 1kHz test
signal - fairly square wf and compensation trim adjustment range not
maxed out to one side - will this 250MHz probe display as accurately as
a (also compensated) 40MHz or 60MHz probe?

Or will a flatter compensation pattern be possible, and subsequent dx
display/waveforms be more accurate w/the latter?

Thank you,
Lance