User's Manual

HIGH POWER EXTENDED DISTANCE CONSIDERATIONS
The NV-EC1701 has a power inlet connector that receives 48 volts from
an external Class 2 SELV desk-style power supply. For multi-camera
systems sharing a 60W power supply, the sum of all camera wattages,
plus the sum of all transceivers wattages (at 2 watts each) shall not
exceed 50 watts.
Power is distributed “always on” to:
The wire resistance causes the voltage to drop, depending on the load
current. If the voltage is too low at the far end, the remote equipment
will not operate correctly. Below are recommended maximum wire
distances.
For a 6 watt IP camera, the maximum distance is 1,800ft (600m), with
shorter distance for higher-power cameras.
Longer distances can still be achieved if the IP camera-end transceiver
is locally powered. In this case, the Cat5 or Cat6 cable resistance
applies. The camera-end power supply is capable of powering the
control-room transceiver, up to 2,500 ft (750 m). See figure 4.
NV-EC1701 NV-EC1701
Model NV-EC1701
www.nvt.com ● (+1) 650.462.8100 ● (+44) (0) 208 977 6614
Ethernet over Coax Transceiver
Model NV-EC1701
www.nvt.com ● (+1) 650.462.8100 ● (+44) (0) 208 977 6614
Ethernet over Coax Transceiver
DVR / NVR
Hybrid DVR or NVR
Monitor
LAN/WAN
≤2,500 ft (750 m)
RG59/U 20 AWG
Grey
Cat5
≤285ft
(≤85m)
Figure 4 - Alternate Power Supply Location
48VDC Power Supply
1) the transceiver’s internal electronics;
2) the RJ45 (pins 5&4 and 7&8) to provide power to the PoE
camera, if connected. Non-PoE equipment should be connected
through the enclosed red RJ45 patch cord, which blocks the
48VDC.
3) out to the coax cable, where it is used by the remote
NV-EC1701, and its associated PoE camera.
IP Camera
25 Watt PoE
Page 7 of 17
Red
Cat5
≤328ft
(≤100m)