LEGRAND 430 523 Manual De Usuario página 26

• Communication Protocol Setup
• Select an appropriate Protocol with the DIP switch combination.
P0
(Pin 1)
OFF
ON
OFF
ON
• 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.
Switch Mode
P1 P2
(Pin 2) (Pin 3)
OFF OFF
OFF OFF
ON OFF
ON OFF
Others
Protocol
PELCO-D, 2400 bps
PELCO-D, 9600 bps
PELCO-P , 4800 bps
PELCO-P , 9600 bps
Reserved
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