The NV-EC1701U has a power inlet connector that receives 48 or 56 volts from an external Class 2 SELV desk-style power supply.
Power is distributed to:
1) the transceiver’s internal electronics;
2) the RJ45, provided the connected camera or other device provides the appropriate 27K ohm PoE ‘discovery signature’.
+48V (or +56V) power is provided on pins 1&2 and 5&4, while 3&6 and 7&8 are at 0 V. The use of all four wire-pairs ensures
maximum distance, even for high-power loads, such as P/T/Z cameras.
3) the coax cable, where it is used by the control-room NV-EC1701U.
For fault/safety, never use more than two power supplies within a network.
Figure 3 - Alternate Power Supply Location
56V 90W
Power Supply
NV-EC1701U
NV-EC1701U
Mo
del
NV
-E
C1701
www
.nv
t.com
● (+1
) 65
0.46
2.81
00
● (+
44) (
0) 2
08 9
77 6
614
Eth
ern
et o
ver
Coax T
ra
nsceive
r
Model NV-EC1701
www.nvt.com ● (+1) 650.462.8100 ● (+44) (0) 208 977 6614
Ethernet over Coax Transceiver
DVR / NVR
Ethernet
Switch
LAN / WAN
IP Camera,
Door Access,
or other IP device
60 Watt
Cat5
≤285ft
(≤85m)
Cat5
≤328ft
(≤100m)
56V 90W
Power Supply
NV-EC1701U
Model NV-EC1701
www.nvt.com ● (+1) 650.462.8100 ● (+44) (0) 208 977 6614
Ethernet over Coax Transceiver
IP Camera,
Door Access,
or other IP device
60 Watt
Cat5
≤285ft
(≤85m)
≤1,000ft (300m) Shielded Twisted-pair
≤ 1,500ft (450m) Unshielded 18/2
See Wire Distance Charts on page 8
or IP Distance Calculator at www.nvt.com
HIGH POWER EXTENDED DISTANCE CONSIDERATIONS
Page 6 of 12
