Then you didn't work with a lot of RF.
Reflections at high frequencies. :)
One more thing to keep track of, on the bench.
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12 years ago
-- You can't have a sense of humor, if you have no sense.
AC mains to scope input
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12 years ago
Not that often, for me, then. 10, or even 50 mV per division is mostly enough. I can always pinch a 1:1 probe off a DVM for the odd occasion I don't mind the capacitive loading.
Switched probes, never.
--
"For a successful technology, reality must take precedence
over public relations, for nature cannot be fooled."
(Richard Feynman)
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12 years ago
That was my approach about 65 years ago and slowly as I learnt a bit more (College and on the job) I was able to understand the risks and so far have managed to only blow one Multimeter current fuse and never damaged a scope. :-)
-- John G.
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12 years ago
Speed. The highest speed amplifiers (this goes up with time) have 50 ohm inputs. Active probes are the norm in some applications.
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12 years ago
My Rigol came with some very nice switched probes. All the regular (passive) Tek probes I have here are switchable 1x/10x.
John
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12 years ago
I've found that Tek probes have a habit of breaking at the tip. The PMK ones I settled on have replaceable tips, choice of rigid or spring-loaded. I don't like the spring-loaded ones much.
--
"For a successful technology, reality must take precedence
over public relations, for nature cannot be fooled."
(Richard Feynman)
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12 years ago
You're not supposed to use them as darts. I've broken a lot of probes but I don't think I've ever broken a tip.
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12 years ago
It's the teeny little molding that holds the tip in that cracks and falls out, complete with tip.
--
"For a successful technology, reality must take precedence
over public relations, for nature cannot be fooled."
(Richard Feynman)