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Registered Member #258
Joined: Sun Feb 26 2006, 03:58PM
Location:
Posts: 21
Hi All,
I am getting weird square waveform from my oscilloscope channel 2. It is curved on the top instead of the typical square wave, what could be the issue ?
Registered Member #258
Joined: Sun Feb 26 2006, 03:58PM
Location:
Posts: 21
Did tried swapping channel 1 probe and also clean the rotary switch contact, still the same though... Btw, I have been trying to upload my scope shot photo since yesterday, but kept ending up with a blank screen. Anybody having the same problem ?
Registered Member #1628
Joined: Wed Aug 06 2008, 08:48PM
Location: Huntsville, AL USA
Posts: 95
I'm assuming your measuring a square wave and getting a curved top. If your probe has an adjustment, try tweaking it until the square wave is square. if I'm wrong and it's not that simple, sorry.
Banned on 3/17/2009. Registered Member #487
Joined: Sun Jul 09 2006, 01:22AM
Location:
Posts: 617
How about connecting the probe to the calibration pin on the scope then adjusting the scopes variable cap instead of just assuming the waveform you're measuring is super clean? After that then see if the one youre measuring look better.
Registered Member #258
Joined: Sun Feb 26 2006, 03:58PM
Location:
Posts: 21
Yes, I am measuring square wave and both probes are connected to the calibration pin which generates square waveform. Also, tested the probes capacitance adjustment, didn't work at all. Could a faulty power supply capacitors causes such curve during the square wave rise? I did noticed two of the power caps kinda mouldy when I first got them. The waveform actually looks like those Mosfet output driven with too much gate resistance.
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Leaders LBO-524 oscillosccope problems
