Samsung SVD-4300 - Manual (Page 8)

Connection
Use AC 24V / 300mA or DC 12V / 500mA power source.
Using a RS-485 communication, it will be able to control the ZOOM/FOCUS and
OSD menu at the SAMSUNG TECHWIN System Controller or DVR.
(1) The case which it controls from the PC
Using a RS-485 converter, It connects to RS-485 control cable outside camera
and serial cable
EX) SERIAL PORT OF THE PC(COM1) — SERIAL CABLE -- RS-485 CONVERTER
-- RS-485 CONTROL CABLE
(2)The case which it controls from the DVR or System Controller
It connects the RS-485 control cable in the connection terminal of 485 control
boards which are connected with the DVR or System Controller.
Connecting to Power
COLOR CCD CAMERA User’s Manual 15 COLOR CCD CAMERA User’s Manual 14
For DC Power Type
• For DC power as the voltage drop according to the length of the cable in the
above table, a camera may malfunction if there is an excessively long cable run.
Resistance of copper wire [at 20C˚ (68˚F)]
* Voltage for camera operation: 12V DC ±10%
* Voltage drops in the above table are variable according to types of cable manufacturer.
Connecting to RS-485 Control Cable
• Be sure to connect power only after all the installation is complete.
• Note that AC or DC adaptor is not supplied with camera.
• Use the UL listed, class 2 power transformer of AC 24V adaptor.
• Ground should be connected to the GND terminal.
Notes
• When you construct external control systems for a camera control, please use to
the SAMSUNG TECHWIN PROTOCOL or PELCO-D PROTOCOL.
• When you connecting to RS-485 control cable, please peel off the outer skin inside
the RS-485 control cable.
Notes
Copper wire size (AWG) #24(0.22mm 2 ) #22(0.33mm 2 ) #20(0.52mm 2 ) #18(0.83mm 2 )
Resistance ( Ω / m) 0.078 0.050 0.030 0.018
Voltage Drop (V/m) 0.028 0.018 0.011 0.006
RS-485 communication control
CONTROL CABLE SPEC
RED (TRX+) RS-485+
WHITE(TRX-) RS-485-
485 CONTROL BOARD CONNECTION TERMINAL RS-485 CONTROL CABLE
(+)CONNECTION TERMINAL RED (TRX+)
(-)CONNECTION TERMINAL WHITE(TRX-)