Sorry, I cannot agree that width is in anyway synonymous with shift or offset to interpret this text as claiming the signature width increases.
I agree offset and shift to be accurate terms to describe a the total movement (by horizontal offset alone) of a graph (I've only see the shift to the extreme left). Again, since I've seen this affect, I'm not looking for interpretation of the text (I believe mine is accurate as it describes it as a shift).
My initial question wasn't about power (the replying posts brought that up, I never introduce that topic). So please refrain from reintroducing power on the circuit unless that is the answer to my question.
May question is the still the same and oddly unchanged. I will restate it here in somewhat different terms (paraphrase):
I have, twice, experienced a horizontal graph shift, during an in-circuit measurement of components, (once for a MOSFET and another a capacitor) on different items. In both instances I saw a perfectly reasonable graph (cap=slight oval, Mosfet= Zener-like graph). Except they were shifted to the extreme left. But otherwise appeared normal. Had they been about the origin...I'd have thought they were fine. But the manual (referenced early) gives some special crediance to the shift affect I just described.
Can someone please describe to me what this shift affect (of an otherwise healthy-looking signature) means? I know the horizontal axis is related to voltage...what would make all the voltage reads offset by an equal amount to shift the entire graph to no longer be about the origin?