Thanks. I'm carefully fiddling w/the settings, including CRT, but it makes it difficult to see if square wf is really square - hard to ck for rounded corners/distortion. I was hoping to see a nearly frozen/slow "showcase" pattern
I'll try to make better use of the graticule and keep acclimatizing
I recently picked up a used two chan 20MHz 1020 Leader scope, very similar to
I'm using (cheap?) Avex 10:1 passive probes
With probe tip at front ref signal 0.5V @ 1kHz (I think I properly compensated the probe for LF), or trying to scope my car's Hall-Effect sensor, I am getting the expected square wave, but sans any vertical traces, like
_-_-_-_-_-_-_-_-
or like the lower pattern on 8022 pic above.
I'm a scope newbie, so I first and foremost expect pilot error, and/or I don't know what a square waveform should look like...
When I just place my finger on the probe tip, at some settings I can get either a sine wave, or something roughly like an (inverted) catenary curve
Or is something possibly wrong w/the scope not registering seeing square pulses? or w/the CRT's deflection on one axis?
Thank you, Lance
It sounds like it's working fine. What you're calling the vertical portion of the trace happens much faster in time than the horizontal. Thus, it's not nearly as bright. If you cranked the brightness up you could perhaps see it, but there's no need -- you know it's there.
You could also speed up the timebase and try to see more of the risetime of the square wave.
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