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2017/11
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 55VDC.
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 Camera 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.
Set the NV-EC1701 PoE toggle switch (located near the
BNC connector) to ON if the connected IP device requires
PoE to be delivered by the NV-EC1701 and to OFF if PoE
should not be delivered by NV-EC1701. This setting relates
to power delivery at the Ethernet RJ45 connection.
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-90 tray,
which supports up to four NV-EC1701U transceivers.
Connect a class 2 (SELV) 55VDC power supply to the
power jack on the NV-EC1701U.
This will provide power to the entire system, including the
cameras. 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
established, and will blink when data traffic is present.
MULTIPLE CAMERAS
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 reason, do not transmit signals
from different network groups within adjacent wire pairs.
The NV-EC1701U transceiver supports 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.nvtphybridge.com.
NVT Phybridge’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.
PoE CONSIDERATIONS
INSTALLATION INSTRUCTIONS
Figure 1 - Typical Installation
6 Watt IP Camera
Ethernet over Coax EoC Transceiver
Cat5
Ethernet over Coax EoC Transceiver
55VDC Power Supply
Cat5
Ethernet
Switch
LAN/WAN
NV-EC1701U
NV-EC1701U
9
Complete Installation Guide
Model NV-EC1701U
EoC Ethernet over Coax Transceiver
with PoE, PoE+, or High Power PoE
