Samsung SCD-6080 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%

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 Camera Number
Default

J
When constructing a proprietary controller for direct camera control, apply Pelco-D or Samsung-Techwin
protocol.

Use only a DVR model that supports HD-SDI saving.
2
#24(0.22mm ) #22(0.33mm
0.078 0.050
0.028 0.018
Less than 20 Less than 30
Transfer Rate
1 9600
2 2
) #20(0.52mm )
0.030
0.011
Less than 30
RS-485 ports of the camera
485+
485–
Communication Mode
8-NONE-1
2
#18(0.83mm )
0.018
0.006
Less than 30
Return Data
Not used
English _17