Electronics > Beginners
doubt square wave
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Adrian_Arg.:
 The technical service of FeelElec, answered me like this, how do I solve it?:-//
"Dear Customers,
Overcharge is caused by impedance mismatch.
It can be matched by series resistance on the output signal terminal.
Yours sincerely,
Sarah
FeelElec
rstofer:
Around here I just use probes set to x-10 as it creates the least load on the circuit.  Have you compensated the probes?  That will usually remove the overshoot at the leading and trailing edges.  In fact, if you overcompensate, you will see the corners round off.

If I'm using something like test leads with mini-grabbers, I don't expect to get clean edges.

The customer service response is correct.  Not really helpful, but correct.
Adrian_Arg.:
Ok thanks for your response, if when I put the probes x1 or or connect BNC-BNC of the fy6900, it is almost perfect.
rstofer:
When you compensate the probe, you are only tuning the x10 range.

https://www.electronics-notes.com/articles/test-methods/oscilloscope/scope-probe-compensation.php

Then too, maybe the reason you have overshoot is because, when the circuit is unloaded with a x10 probe, there actually are reflections in the wiring.  You can load the circuit with a resistor to ground while probing with the x10 probe.  See what happens with 1k to ground.
Adrian_Arg.:
Thanks, I'm going to do that test.
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