In SX Microcontrollers, SX/B Compiler and SX-Key Tool, metron9 wrote:

I have a question about RS485 voltage levels though, Can the same benifits of in phase noise be obtained using +5 and Ground levels on a chip to chip communication as an alternitive to just serial when longer lines connecting devices becomes a problem. I am still not sure in my mind if say +10 and Ground would be escentially the same operation as +5 and -5. I have a hunch though that with a -5V signal it can be regulated the same as the +5 side so you know you have a 10V potential difference. After clicking on the bottom link and reading the authors tutorial on DMX systems that he builds I realize this is the first time I have read anything about RS45. There should be 32 hours in a day so after work I have more time to learn about all this stuff and get some sleep.

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