Ferrites on cables are supposed by adding to the inductance stop radiation
from cables getting out and into domestic equipment etc. Often used by radio
hams to stop their transmissions being picked up on speaker or line
connectors as well.

I do not believe one can break a connection physically by shoving data down
it, but group delays and reflections in standard copper cables can limit the
frequencies you can put down them of course, which could be seen as a break
in connection.
Brian

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This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please!
"Tim Streater" wrote in message
.. .
In article , Chris B
wrote:

I asked more about this "band". Its apparently to stop the cables
completely breaking if you try and push to much data down dodgy cables
(now his or my understanding have reached the end of the line). He says it
is frequently done but should never be as severe as on this line and has
almost certainly been applied in error.

On the face of it this sounds like ********. "Completely breaking" -
what does *that* mean?

Unless it's those ferrite jobs you see on some cables (I can see about
seven of those from where I'm sitting, on USB cables) but quite what
they do I'm not sure.

--
The truth of the matter is that we Scots have always been more divided
amongst
ourselves than pitted against the English. Scottish history before the
Union of
Parliaments is a gloomy, violent tale of murders, feuds, and tribal
revenge.
Only after the Act of Union did Highlanders and Lowlanders, Picts and
Celts,
begin to recognise one another as fellow citizens.

Tam Dalyell