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The shield must always be connected to the Ground (GND) terminal at each device.
§
Avoid unsheathing the communications cable for an excessive length (>20cm)
§
The shield must NEVER be connected to an electrical protective earth point
§
Termination
Communication cables must be terminated with 120 ohm ¼ watt resistors connected between "+" (A)
and "-" B terminals, at the first and last device.
NOTE: Failure to follow these guidelines can result in communications errors, and some fans not
responding
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