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Radio/Serial Telemetry Module User Manual
Page 24 © March 2000
RS485 is a balanced, differential standard but it is recommended that shielded, twisted pair cable be
used to interconnect modules to reduce potential Radio Frequency Interference (RFI). An RS485
network should be wired as indicated in the diagram below and terminated at each end of the
network with a 120 ohm resistor.
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