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Speed Dome Camera Instruction Manual
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Terminal Resistor Set-up
1
2
3
4
ON
ON
The terminal resistor is used in the following cases.
Case 1 : In case
s where
the control cable between a camera and
a controller is very long (1:1
c
onnection)
If the communication cable length is very long, the electrical signal can
bounce at the termination point. This reflected signal causes distortion
of the original signal and the camera can go out of control. In this
case, the terminal resistor on both sides i.e. camera and controller
should be set to ‘ON’.
Case 2 : In case
s
where
multiple cameras are connected to
a
controller.
For similar reasons to the above, the terminal resister of the
controller and last camera should be set to ‘ON. 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.
Controller
n
#
2
#
1
#
Terminal Resistor ON
RS-485
Terminal Resistor
OFF
Terminal Resistor
OFF
Terminal Resistor
ON
INSTALLATION
2