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Bad scope rise/fall waveforms on one channel of Agilent DSO5014A scope
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euzer:
Thanks for all the input everyone. I've tried a self-test and nothing was reported, although the second run of the self-test doesn't pick up both the intensity dial or the calibration protection slide switch on the rear, during the input button/dial test. I suspect there may be a potentiometer for the intensity which is damaged as it didn't feel too smooth. Not sure about the reason for the calibration protection not being picked up. We have our kit calibrated at a test house so there was a tamper label covering this switch. I was considering doing a user calibration but it will invalidate our calibration and also I'd have to get the necessary BNC bits in to perform this.

It's the same behaviour on different vertical resolutions, and I have tried toggling the bandwidth setting for the suspect channel. I forgot to try the 50R setting.
nctnico:
To be clear: you did not run the test that requires to connect the BNC output from the rear to the front panel inputs? In order to find your problem, you really need to run that test! Your calibration is void either way because the equipment isn't working properly, so don't care about that at this point.
euzer:
That's correct, I didn't connect the BNC from the rear to the front. I'll try and assemble the kit to try it out.
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