Samsung SCB-6001 User Manual page 17

resistance of copper wire [at 20°c (68°f)]
Wire specification (AWG)
Resistance (Ω/m)
Voltage Drop (V/m)
Recommended Distance (m)
• As shown in the table above, you may encounter a voltage-sag depending on the
wire length. If you use an excessively long wire for camera connection, the camera
may not work properly.
Voltage for proper camera operation: DC 12V±10%, AC 24V±10%
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Voltage drop shown in the table above may show difference from the actual depending on the
`
manufacturer and cable type.
rS-485 communications
Using RS-485 communication, the camera menu can be accessed using Samsung
Techwin's System Controller or the DVR.
• For accessing the camera from a computer
Use a RS-485 converter to connect the camera's control port with the computer's
serial cable.
Ex) Serial port (COM1) of computer  Serial Cable  RS-485 Converter  Camera's
RS-485 control port
• For accessing the camera from a DvR or the System Controller
connect the camera's RS-485+ and RS-485– terminals to the RS-485 control board's
terminals of desired device with a RS-485 cable (TRX+ and TRX–).
Control ports of RS-485 Controller
(+) CONNECTION TERMINAL (TRX+)
(–) CONNECTION TERMINAL (TRX–)
Default rS-485 communication settings
Item
Default
When constructing a proprietary controller for direct camera control, apply Pelco-D or Samsung-
`
J
Techwin protocol.
Use only a DVR model that supports HD-SDI saving.
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#24(0.22mm ) #22(0.33mm
2
0.078
0.028
Less than 20 Less than 30
CAM ID BAUD RATE
1 9600
) #20(0.52mm
2
0.050 0.030
0.018 0.011
Less than 30
RS-485 ports of the camera
485+
485–
UART MODE
8-N-1
) #18(0.83mm )
2 2
0.018
0.006
Less than 30
RET PKT
ENABLE
English _17