I was observing a 2MHz sinewave on my CRO, 200V at very low amperage.
When I shorted the test leads, with one hand on the probe and the other on the ground clip, the waveform reduced to one quarter the original amplitude, and was distorted. This raised a number of questions regarding impedance.
Is the lost amplitude being absorbed by my body? If so, is it absorbed as the waveform represented on the CRO _before_, or _after_, the shorting?
Is such reduction in amplitude indicative of an impedance match, or would a good match result in little or no waveform degradation?
Thank you for any insights.
Duane Peterson