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CABLE LENGTH
The communication interface between Speed Dome and Keyboard is RS-485.
Maximum cable length for RS-485 communication over 24-gauge wire is 4000 feet (1219
meters). CAT 5 cable is recommended.
CABLE DEFINITION (P Protocol Keyboard to Speed Dome)
For P Protocol Keyboard
For SpeedDome
1
2
4
5
6
7
8
Tx-
Tx+
+12V
GND
Rx-
Rx+
1
2
3
4
5
6
Tx-
Tx+
+12V
GND
Rx-
Rx+
CABLE DEFINITION (D Protocol Keyboard to Speed Dome)
For SpeedDomeFor D Protocol Keyboard
Tx -
Tx+
GND
Rx-
Rx+
1
2
3
4
5
6
Tx -
Tx+
GND
Rx -
Rx+
1
2
3
4
5
6
GND
33