Speco Technologies KBD-927 Termination & Dip Switch Setting, Termination and ID Switches

2.2 Termination & Dip Switch Setting

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 mile. Refer to Figure 7 for setting the dome camera and keyboard controller termination.

Cable for communication

More than two branches require repeater (HID2404SR) which allows additional branches.

Termination should be On

Termination should be On

Cable for communication

Figure 7 – Termination and ID Switches.

Termination and Master/Slave: Set the switches according to your configuration.

S2

ON

9J 1 2 3 4 5 6 7 8

Figure 8 – Keyboard DIP Switches

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