[ARC5] Oscope Question

[Robert Eleazer]

I have noticed something interesting with an oscilloscope I have.  With no signal input, down at the lower right hand corner the trace takes a downward dip, and if you adjust the vertical position of the trace still lower the trace bends up a bit and kind of resembles an S-curve at the end.

Any of y'all have any idea what this might be?  The scope works fine otherwise.

Thanks,

Wayne
WB5WSV
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