A discussion of converting the network for a security electronics application from RS-485 transceivers to SymPol (TM) transceivers. The benefits are that SymPol transceivers are immune to cross-wire fauls on the bus signal lines, and are not damaged by direct shorts to 12Vdc supply wires.
Part 1a - when wired correctly, the RS-485 signaling controls the PTZ camera.
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