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Re: Serial Connection

Stan Hoeppner wrote:
We bought DB25 plugs in bags of 100, and used spooled CAT5 as the noise
rejection is many times that of CAT3, allowing greater distances across
sprawling warehouses.

RS-232 uses single-ended signaling and requires shielded cable, twisted
pair doesn't help either. The common-mode noise rejection of twisted
pair only works if the signals connected to a balanced input receiver.
Industrial RS-485 communication is one of these solutions, for example.

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