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In Reply to: To a point. posted by gusser on July 21, 2017 at 06:45:24:
"General rule of thumb for measuring equipment is 5x the measured bandwidth. So to accurately measure a 20khz square wave, your scope needs at least 100khz of bandwidth."
Not to nitpick your comment, but for accurate visual analysis of square waves, 10X is a better rule. We have scopes where I work with bandwidths of 1.5 gHz, and we make (among other things) devices that output TTL-level square waves to beyond 200 MHz. I've tested 80 MHz square waves (one of our "standard" frequencies) with both a 400 MHz scope and our 1.5 gHz scope. There's a marked improvement with the higher frequency instrument.
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- RE: To a point. - Triode_Kingdom 08:12:32 07/21/17 (0)
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