Oscilloscope THD performance

[Ronnie4416]

If oscilloscopes are one of the main tools that analyze electrical signals as they give a full representation of the signal amplitude variation over time why most scopes I’ve seen (if not all) don’t have THD specification on their data sheet?

 

[SY]

Remember, a scope gives a visual representation. Your eyes are not particularly sensitive to HD- it takes several percent before it becomes clearly visible.

 

[Ronnie4416]

Now I know there is no need to exert effort looking for THD spec on any scope data sheet. Thanks Stuart.

 

[Elvee]

This kind of specification exists for oscilloscopes, but it isn't given in a THD format, rather as linearity, which is obviously more meaningful:

 

[Ronnie4416]

@Elvee
So what scope brand & model is the data sheet? If linearity specification is more meaningful how come popular brands like Agilent, LeCroy, & Tektronix (mentioned in alphabetical order) don't specify them on their data sheet?

 

[Elvee]

This spec is extracted from the TEK 2445 manual:

http://web.mit.edu/jhawk/www/tek2445.pdf

But I've seen this kind of spec (maybe with a slightly different formulation) on other instruments and manufacturers.