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6.4.1 Connecting the Keyboard
PELCO Keyboard (or compatible) Installation
The RS-422 interface is used for communicati
ng with a PELCO keyboard. Refer to Fig. 1;
connect R+ of the camera to T+ of the PELCO keyboard. Connect R- of the
camera to T- of the PELCO keyboard.
The user can adjust Camera ID via rear
panel keys or via remote commands.
Protocol, Speed and Parity should only be adjusted via rear panel keys.
Communication Setting
0 ~ 253 for P protocol
CAMERA ID
1 ~ 255 for D protocol
PROTOCOL PELCO
SPEED 2400, 4800, 9600, 19200
PARITY NONE
The speed of camera should be the same as the speed of the keyboard.
Adjusted function is only effective, after exiting the OSD setup menu.
Note:
Maximum cable distance for RS-485 coMmunication over 24-gauge wire is 4,000
feet (1,219 m). Recommend using a shielded twisted pair cable that meets the basic
requirements for EIA RS-485 applications.