Thread: Probes
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Old June 1st 10, 11:21 PM posted to rec.radio.amateur.homebrew
Gary[_5_] Gary[_5_] is offline
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First recorded activity by RadioBanter: Jun 2009
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Default Probes

On May 31, 3:13�pm, nobody wrote:
Gary wrote:
On May 30, 3:12 pm, Plasmah77
wrote:


The 60 MHZ specification on your
scope means its vertical amplifier and display will start to degrade
at 60 MHZ or higher in frequency. �


No. It is 3dB Bandwidth. Degrade will start earlier. You will have lost
half power or in voltage around 30% of the signal.

Therefore using a probe with a 60

MHZ rating will allow you to realize all of your scope's capabilities.


There is also a capacitance specification that should match. It is
however unlikely that it should not. Go ahead with the 100MHz probes if
you get them at a fair price.


The question was would a 100 MHZ probe work with a 60 MHZ scope. The
asker claimed to be a beginner. I made a general comment about why it
would. I saw no reason to muddy the waters by talking about half
power points and 3dB bandwidths. Trying to make it simple.

Gary N4AST