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RDM Physical Layer/Hardware Discussion Discussion and questions relating to the physical or hardware layer of RDM.

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Old September 13th, 2010   #1
tracyu
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Default New 485 transceiver

Here's an interesting idea for RS485 networking. It's a transceiver you can cross wire and still have your system function.
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Old September 14th, 2010   #2
Gerry
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Quote:
Originally Posted by tracyu View Post
Here's an interesting idea for RS485 networking. It's a transceiver you can cross wire and still have your system function.
Did you miss this:
Sympol is NOT interoperable with RS-422 or RS-485; that is, designers may not mix Sympol nodes with existing RS-485 nodes.


I'ts not RS485. It works by active and passive bus lines, a bit like can-bus, but in this case both positive and negative levels are considered active. I'ts not compatible with DMX/RDM.
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Old September 26th, 2010   #3
dangeross
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Default Crossed wires

You will have to be able to recognize bad data as the result of crossed wires but these http://focus.ti.com/docs/prod/folder...65hvd1794.html will let you swap wires on chip.
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