Samsung SNC-570 User Manual page 38

Network Camera SNC-570
Table 3-1. When the resistance value of copper wire is at [20℃(68℉)]
Copper wire size
(AWG)
Resistance value
(Ω/m)
Voltage drop(V/m)
As shown in the Table3-1, voltage decreases as the wire gets
longer. Therefore use of an excessively long adaptor output
line for connection to the camera may affect the performance
of the camera.
※ Standard voltage for camera operation: DC 12V±10%, AC
24V±20%
※ There may be some deviation in voltage drop depending on the
type of wire and the manufacturer
Caution
PoE(Power Over Ethernet)
POE(Power Over Ethernet)is the function of LAN related devices,
which supports data and power simultaneously with only connection
of LAN cable without separate power input cable installation for
power excitation to the product.
When connecting camera to PoE device, please connect to the
device complying with PoE (IEEE802.3af) specifications. In case
non-standard product is used, it may cause performance degradation
or trouble.
34
#24
(0.22㎟) (0.33㎟)
0.078 0.050
0.028 0.018
In case PoE and power adaptor are connected to
camera simultaneously, the power authorized first
by the product is used.
#22 #20
(0.52㎟)
0.030
0.011
#18
(0.83㎟)
0.018
0.06