[geeks] RS232 / RS485 opto-isolated converter

[Jochen Kunz]

On Wed, 21 Dec 2011 16:15:47 -0500
Patrick Giagnocavo <patrick at zill.net> wrote:

> What exactly would they be used for?
Transmitting serial signals over long lines and in noisy environements.
RS485 and RS422 use voltage differential signaling and terminated
twisted pair cables. Many higher level protocols use RS422 / RS485 as
physical transport, e.g. DMX.
-- 


\end{Jochen}

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