On 24/06/2020 16:22, David Higton wrote:
> In message 
>            The Natural Philosopher  wrote:
>
>> On 23/06/2020 22:22, David Higton wrote:
>>> In message 
>>>             Michael J. Mahon  wrote:
>>>
>>>> More likely, capacitance between lines of a longer cable slows signal
>>>> transitions, eroding signal margins.
>>>
>>> Please, learn transmission line theory.
>>>
>>> David
>>>
>> Is there any evidence that a USB cable behaves as a transmission line?
>
> All cables behave as transmission lines.  So do PCB traces.

Well no, they don't.
a single signal wire with the earth/return via the other side of the
world is so far from a transmission line as to render the notion 'not
useful'

>
> There are some situations where it isn't necessary to treat them as
> such, but USB isn't one of them.
>
> David
>


--
"A point of view can be a dangerous luxury when substituted for insight
and understanding".

Marshall McLuhan

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