Lekhika (asker) Jan 22, 2019:

Thank you for the detailed and patient explanation, Marc. Not having a technical background makes the interpretation of such terms in the right context that much more challenging. I do get the meaning better now. Thanks again.

Marc Brunet Jan 22, 2019:

mmmh, aren't you reading ゆったり　as ゆっくり?
If it were the latter, you'd be correct, but from my verification ゆったり　does denote a notion of fullness, normal/expected flow/shape. So in that context, would take this as an indication of a "well defined, standard sine shaped" [basic wave form component= 波分]。(Sorry I did not crack 波分、in my first rough post.)
Now, what would be the point of this particular recommendation?
What the engineer sees on his oscilloscope when sampling some electromagnetic output is very often a composite of several waves forms made up of a basic one whose profile gets distorted/blurred by a number of its simultaneous harmonic waves, and/or perhaps interfering waves from a different source.
Since the basic wave determines the shape of these harmonic waves, it is that basic wave, if it can be delineated through mental interpolation or computed tomography, which must serve as the prime reference on which to base a bench mark for future estimate/comparisons. Don't agree?

Lekhika (asker) Jan 21, 2019:

Thank you for your suggestion, Marc. But is 'fulsome response' in the sense of 'ample response'?
The literary meaning of 'ゆったり' is more like 'calm / unhurried / relaxed' isn't it?