LEGRAND 430 523, User Manual

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Communication Protocol Setup •
Select an appropriate Protocol with the DIP switch combination. •
Switch Mode
Protocol
P0
(Pin 1)
P1
(Pin 2)
P2
(Pin 3)
OFF OFF OFF PELCO-D, 2400 bps
ON OFF OFF PELCO-D, 9600 bps
OFF ON OFF PELCO-P, 4800 bps
ON ON OFF PELCO-P, 9600 bps
Others Reserved
Match the camera protocol with the camera protocol in the setting of your DVR or controller to control the •
camera.
Adjust the DIP switch after turning off the camera. If you changed the camera protocol by changing the DIP
•
S/W, the change will be effective after you reboot the camera. The factory default protocol is “Pelco-D, 2400
bps”.
Terminal Resistor Setup •
The terminal resistor is used for the following cases. •
Case 1 : In case that the control cable length between a camera and a controller is relatively very •
long (1:1 Connection)
If the communication cable length is very long, the electrical signal will bound in the terminal point. This
reflected signal causes distortion of original signal. Accordingly, the camera can be out of control. In this
case, the terminal resistor of both sides i.e. the camera and the controller must be set to ‘ON’ state.
Case 2 : In case that multiple cameras are connected to a controller. •
Due to similar reasons with the case 1, the terminal resister of the controller and the last camera must be set
to ‘ON’ state. The last camera means the camera farthest in cable length from the controller. Do not turn on
the terminal resistor of all the cameras on the same communication cable.
The complete informations are in the manual on the CDrom.
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