27
■Camera Connections
The following is a connection example to use system cameras and combination cameras.
Notes:
•Make sure that the cable length is less than 900 m {3 000 ft} between the camera site and the unit when using RG-59/U,
BELDEN 9259 or equivalent cables.
•To display recorded images on monitors connected to this unit, connect the MONITOR OUT connectors of recorders to the
CAMERA IN connectors of the unit.
•When connecting cameras to the unit, reserve more unused connectors than the recorder total number. (Refer to p. 63
Recorder Connections for details.)
■RS-485 Camera Connections
There are two options to connect RS-485 cameras to this unit.
•1:1 connection: One camera is connected to one RS-485 (CAMERA) port.
•Daisy chain connection: Up to 8 cameras can be connected to one RS-485 (CAMERA) port.
Notes:
•Set the line termination to ON for cameras at the connection ends. Line termination setting is performed with the MODE 1 to
4 switches (refer to p. 61) at video input rear boards.
•Perform the RS-485 camera setting in RS485 CAMERA of SETUP MENU (refer to p. 84) or "System" – "RS485 Camera" of
WJ-SX650 Series Administrator Console.
•1 200 m {3 937 ft} is the total length limit of RS-485 cables.
•Recommended for RS-485 communication is AWG#22 or thicker one. The cable should be shielded, two-wire, twisted pair,
and with low impedance.
•Conform the 2-wire or 4-wire communication setting of this unit to that of RS-485 cameras.
The following is the details on MODE 1 to 4 switch settings.
VIDEO OUT 3
VIDEO OUT 4 VIDEO OUT 2
IN X-2
VIDEO OUT 1
ALARM IN
IN X-1
16
32
15
31 30
14 13
29 28
12 11
27 26
10 9
25
CAMERA IN
24
87
23 22
65
21 20
43
19 18
21
17
EXTENSION 3 IN EXTENSION 2 IN
4
MODE
RS485 (CAMERA) RS485 (CAMERA)
3
MODE MODE MODE
21
IN C-3
17
1516 1234
18193132
System camera
Combination
camera
Video input rear board
ON
OFF
2-wire communication Line termination: ON
4-wire communication Line termination: OFF
1234
ON
1234
ON
1234
4-wire
communication 2-wire
communication