Specifications

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Figure 6: Termination diagram
2.5 Termination
The first and last devices in an installation (dome and keyboard controller) must have the data line terminated by setting the DIP switch.
Without proper termination, there is potential for control signal errors. Total length of the cable for communication should not exceed 1.2km.
Cable for communication
Termination ON
1.2km
Repeater/Splitter
Cable for communication
Input termination ON
Output termination ON
1.2km
Termination ON
Termination ON
Termination ON
Termination ON
Termination ON
Cable for communicationCable for communication