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Oscilloscope wave form
Oscilloscope wave form
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Old 6th August 2019, 10:25 AM   #11
DF96 is offline DF96  England
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Yes, what does the input 'square wave' look like?
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Old 6th August 2019, 10:42 AM   #12
paulebappie is offline paulebappie  Netherlands
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Did you calibrate the probe?
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Old 15th August 2019, 06:01 PM   #13
Mark Tillotson is offline Mark Tillotson
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Soundcards can't produce decent square waves, their output is band-limited to the audio range by a brick-wall digital filter.
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Old 15th August 2019, 06:55 PM   #14
Sancho49 is offline Sancho49  France
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Hi Everyone,
Yes I've check the probe calibration, but same problem.
Finaly, I've replace my computer with function generator software to an function generator, and ... Work !

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Old 15th August 2019, 06:59 PM   #15
Mooly is offline Mooly  United Kingdom
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Oscilloscope wave form
that looks much better. I suspected it could be the method of generating the signal that was the issue.
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