INSTALLATION INSTRUCTIONS
NV-EC1701U
NV-EC1701U
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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
48VDC Power Supply
IP Camera,
Door Access,
or other IP device
6 Watt
Cat5
≤328ft
(≤100m)
Figure 1 - Typical Installation
Cat5
≤328ft
(≤100m)
≤1,000ft (300m) Shielded 18/2
See Wire Distance Charts on page 8
or IP Distance Calculator available at www.nvt.com
≤1,500ft (450m) 18/2 UTP or 4-pair Cat5
Most installations that use the NV-EC1701U transceiver involve
the replacement of old analog equipment with new IP devices,
while reusing the installed wire.
To prevent damage, disconnect all analog equipment before
installing the IP equipment. The NV-EC1701U uses the wire to
deliver 48 or 56VDC.
Transceiver Configuration
NV-EC1701U transceivers
must be configured
to communicate
exclusively with other transceivers within their
Network Group
.
The configuration process is described on page 3..
Connecting the Remote End
Install the new IP device. Mount the NV-EC1701U nearby or
within 328 feet (100 meters). Connect an RJ45 cable between
the network connector (PoE) of the IP device and the RJ45 jack
on the NV-EC1701U.
Connect the screw-terminal adaptor to the BNC jack on the
NV-EC1701U and connect one wire conductor to a terminal
marked “+”. Connect the other wire conductor to a terminal
marked “-”.
Observe polarity so that it will match that of the
control-room end
.
For most installations, the IP device’s power will be low enough,
and the wire distance short enough, so that the IP device and its
NV-EC1701U can receive power through the wire. In most cases,
a power supply will not be needed at this end. For additional
details, see pages 6 & 7.
Connecting the Control-room End
Install a second NV-EC1701U at the control-room end of the wire.
Connect the screw-terminal adaptor to the BNC jack on the
NV-EC1701U and connect one wire conductor to a terminal
marked “+”. Connect the other wire conductor to a terminal
marked “-”.
Be sure to match the polarity of the remote-end
NV-EC1701U.
If rack-mounting is desired, use the NV-RMEC16U tray, which
supports up to four NV-EC1701U transceivers.
Connect a class 2 (SELV) 48 or 56VDC power supply to the power
jack on the NV-EC1701U.
This will provide power to the entire system, including the cam-
eras. The Blue “Power” LEDs will illuminate on both transceivers.
If the LEDs do not light, check the wire polarity. If the blue LEDs
blink, then the power supply is cycling on and off due to an
overload condition. Check for wire faults or excessive loading.
Connect an RJ45 patch-cord between the RJ45 jack on the
NV-EC1701U and your ethernet switch.
The Green LEDs will illuminate when a network link is estab-
lished, and will blink when data traffic is present.
The NV-EC1701U transceivers communicate with each other
using a bus-architecture. This means that multiple remote NV-
EC1701Us may be connected together to an NV-EC1701U at the
control-room. The cables are connected together using the
screw-terminal adaptor. Extra screw terminals are provided to
allow easy connection. Star, daisychain, or any combination of
topologies, including mixing of UTP and coax media may be
used.
Unlike coax-based signal distribution, the high frequency signals
that are transmitted can be susceptible to very small amounts of
crosstalk from other NV-EC1701U network groups. For this rea-
son, do not transmit signals from different network groups with-
in adjacent wire pairs..
The NV-EC1701U transceiver has been recently updated to
support full PoE, PoE+, and High Power cameras, as well as
non-powered legacy devices.
Unlike conventional PoE, voltage-drop and load current must be
confirmed by the installer. See “High Power Extended Distance
Considerations” on page 6 and use the IP Distance Calculator at
www.nvt.com.
NVT’s Class 2 current limiting ensures safety of the installation
during fault conditions, while delivering higher power (up to 90
watts) with more efficient allocation amongst loads.
Up to two
power supplies may be used within a network group.
MULTIPLE CAMERAS
PoE CONSIDERATIONS
Page 4 of 12
