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rs485 - The origin of the "cable length - data rate" graph in the RS-485 - Electrical Engineering Stack Exchange
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communication - Is CAT5 cable good enough for RS-485 vs "true" RS-485 cable - Electrical Engineering Stack Exchange
RS485 - What are the Allowed Cable Lengths and Baud Rates for RS485 or BACnet MSTP? - Chipkin Automation Systems
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