NETWORK PTZ CAMERA
User Manual
29
- Power Adapter
The SNP-3370TH/3301H uses an AC24V 2.5A power adapter for the power supply.
Plug the power adapter into a power outlet.
Chart 3-1. Electrical Resistance of Copper Wire at [20
°
(68
°
)]
- Communications Cable
For the camera to communicate with the controller, a RS-485/422 communications line is
required.
• A 30m or shorter length is recommended
for the connection.
Caution
3.4. Preparing Adapter and Cable
• As shown in Chart 3-1, voltage drop may occur depending on the length of the copper cable: excessively lengthening the
adapter cable may decrease the performance of the camera.
※
Camera Operating Voltage: AC 24V±10%
※
Voltage drop measurements on the chart above may vary depending on the type and manufacture of the copper cable.
Copper Wire Gauge (AWG)
#24(0.22
°
)
#22(0.33
°
)
#20(0.52
°
)
#18(0.83
°
)
Resistance (Ω/m)
0.078
0.050
0.030
0.018
Drop Voltage (V/m)
0.028
0.018
0.011
0.06
* The communication cable is not enclosed with the
camera.
A.NO
A.COM
GND
TX
D-
D-
TX
D+
D+
GND
GND
100M
200M
1.N
O
1.N
C
2.N
O
2.N
C
IN1
IN2
IN3
IN4
