NVT NV-EC1701U Eo2 User manual

Model NV-EC1701U Eo2TM
Ethernet over 2- ire Transceiver
with PoE+ or High Power PoE
1) Read these instructions.
2) Keep these instructions.
3) Heed all warnings.
4) ollow all instructions.
5) Do not use this apparatus near water.
6) Clean only with a dry cloth.
7) Install in accordance with the manufacturer’s instructions.
8) Do not install near any heat sources such as radiators, heat regis-
ters, stoves or other apparatus (including DVRs) that produce heat.
9) Do not defeat the safety purpose of the polarized or grounding-type
plug. A polarized plug has two blades with one wider than the other.
A grounding type plug has two blades and a third grounding prong.
The wider blade or the third prong are provided for your safety. If the
provided plug does not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.
10) Protect the power cord from being walked on or pinched
particularly at plugs, convenience receptacles, and the point
where they exit from the apparatus.
11) Only use attachments/accessories specified by the manufacturer.
12) Refer all servicing to qualified service personnel. Servicing is
required when the apparatus has been damaged in any way, such as
a power supply cord or plug is damaged, liquid has been spilled, or
objects have fallen into the apparatus, the apparatus has been
exposed to rain or moisture, does not operate normally, or has been
dropped. This installation should be made by a qualified service per-
son and should conform to all local codes.
13) BNC Connection: the installation shall be in accordance with the
applicable provisions of the National Electrical Code ANSI/N PA 70,
Article 800.90 and Canadial Electrical Code Part 1, Section 60-504.
14) RJ45 PoE connection: to be connected only to networks or circuits
that are not routed to outside plant or building.
This installation should be made by a qualified service person and
should conform to all local codes.
WARNING - Do not install the unit in an environment where the
operating ambient temperature exceeds 185° (85° C). The ventila-
tion should not be impeded by covering the unit with items, such as
newspapers, table-cloths, curtains, etc. No naked flame sources, such
as lighted candles should be placed on the apparatus.
WARNING - Do not interconnect multiple outputs. Never use
more than two power supplies within a network system.
WARNING - The apparatus shall not be exposed to dripping or
splashing and no objects filled with liquids, such as vases, shall be
placed on the apparatus.
WARNING - Use only a Certified power cord and plug (coupler /
mains) assemblies for location installed.
WARNING - Power cord is regarded as main disconnect.
WARNING - The appliance coupler (power cord/mains) shall
remain readily operable.
WARNING - or safety, never put NVT signals in the same con-
duit as high-voltage wiring.
This product is intended to be supplied by a certified power source
marked “Class 2” or “LPS” and rated 48-56 VDC, minimum 840mA,
which may or may not be provided with the product.
Power supplies, when provided, are external inline, with an IEC380-
C14 power inlet and 6 ft (1.8 m) line-cord. Input Voltage is 100 ~240
VAC 50-60 Hz. A molded P1J 5.5 mm barrel connector provides a
Class 2 (SELV) 48-56 VDC regulated output. Line cord UL approved
type SPT-2, SVT, or SJT, 18/3 AWG Min. 300VAC, 60° C Max. 15ft
(4.5m) long. One end with IEC380-C13 appliance coupler and the
other end with NEMA 1015P or equivalent for country.
TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVER OR
BACK. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
WARNING: TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT EXPOSE THIS
APPARATUS TO RAIN OR MOISTURE.
IMPORTANT SAFETY INSTRUCTIONS
Page 1 of 12
Complete Installation Guide

•Transmit 10/100 BaseT Full Duplex Ethernet up to 1,000ft (305m)* over 4-pair cat5;
750ft (228m) over 18/2 (or similar 2-wire cable); 500ft (150m) over Shielded Twisted-Pair
•Powers PoE entry stations (or other PoE, PoE+, or High Power devices), up to 60 watts*
•48or 56VDC is distributed over 2-wire cable to all connected IP devices
•One NVT Eo2T transceiver at the network-end can support multiple remote Eo2T
transceivers and connected devices
•Up to four Eo2T transceivers can be rack mounted on an NV-R EC16U Eo2T Rack
ount Tray Kit, connecting up to 16 entry stations or contact closures
•Easy configuration, no PC required
•Transparently supports all networking protocols (UDP, TCP/IP, HTTP, ulticast etc.)
•Advanced 128-bit AES encrypted transmission and PoE+ power technology
•Built-in transient protection; Industrial temperature range
•Available in 1-4 device Eo2T System Kits
•Limited lifetime warranty
The NVT odel NV-EC1701U Eo2T Ethernet over 2-Wire Transceiver is a compact media converter that
allows 10/100 BaseT Ethernet and PoE power to be transmitted using UTP, STP,18/2, or similar cable.
These devices are often used in legacy installations where existing wire is re-used as part of an upgrade
to IP devices. 48 or 56VDC class 2 power is delivered to one transceiver, which distributes it to up to four
remote transceivers, and their PoE or PoE+ devices.
These transceivers are extremely simple to use, with no PC configuration required. Status LEDs indicate
power and link connectivity/activity for RJ45 and 2-wire ports. The NV-EC1701U is backed by NVT’s
award winning customer support and limited lifetime warranty.
*Distance and number of devices supported may be lower due to attenuation/voltage-drop on the wire. See Wire Distance charts on page 7.
Page 2 of 12
PRODUCT OVERVIEW
Model NV-EC1701U Eo2TM
Ethernet over 2- ire Transceiver
with PoE+ or High Power PoE

CONFIGURATION INSTRUCTIONS
NV-EC1701U Eo2TMtransceivers transmit high bandwidth encrypted Ethernet signals over conventional 2-wire cables. To provide utmost signal integrity
and security, the NV-EC1701U transceivers must be configured to communicate exclusively with other transceivers within their Network Group. This
group typically consists of one NV-EC1701U located at the control room (usually connected to an ethernet switch or router), and up to four remote
NV-EC1701U transceivers (usually connected to IP cameras or other remote IP devices).
Before connecting to the network, each NV-EC1701U must learn which other NV-EC1701U transceivers are to be part of that group.
This simple process is called Joining. It is recommended that transceivers in each Network Group be configured prior to deployment using these
instructions:
Step One: Gather Materials
• NV-EC1701U transceivers
• 48VDC power supply & line-cord (NV-PS48-60W)
• Hook-up wire (not supplied)
• Small paper-clip, partially straightened
• Device labels
• IP Network Documentation Log
Step Two: Connect Hardware
• Remove and discard the “Configure Before Use” labels.
• Connect two NV-EC1701U transceivers using hook-up wire.
Observe polarity. Units will not power up if the polarity is reversed.
• Connect a 48VDC power supply to transceiver #1; Apply power.
• Verify that the blue POWER LED on each transceiver illuminates.
• After 20 seconds, verify that the green BNC LED on each transceiver is off.
If a BNC LED is on, the transceiver has been previously joined.
Perform the un-joining process below before proceeding.
Step Three: Joining
• On transceiver #1, using the straightened paper-clip, momentarily depress
the small push-button located behind and slightly above the RJ45 LED.
The blue power LED will begin blinking.
• Depress the same push-button on the transceiver #2.
• Both transceivers have now entered Join Mode.
They will find each other and establish encrypted communication.
In about 10 seconds, the blue Power LEDs on both transceivers will return
to a steady on condition indicating a successful Join.
Step Four: Adding Transceivers (if required)
• Disconnect transceiver #2 and replace it with a new un-joined transceiver (#3, or #4, or #5).
• Repeat steps two and three to add additional (up to five total) transceivers to the
same Network Group.
Step Five: Documentation
• Label the configured transceivers with a unique Network Group ID of your choice.
This will help you identify them after they have been deployed.
• Record this Network Group information in your IP Network Documentation Log.
This log may include essential documentation which will help you identify all
system devices during and after deployment:
• Camera (or other device) Number • Camera-end NVT Transceiver MAC Address
• Camera Position/Location • NVT Transceiver Network Group Name
• Camera Make & Model • Control Room NVT Transceiver MAC Address
• Camera MAC & IP Address • Control Room Router Port Number
• Camera Login & Password
Un-Joining a Transceiver
If you need to move a transceiver from one Network Group to another, it must first un-learn its
previous Network Group and be returned to an un-joined state. Do this by:
• Connect a 48VDC power supply to a transceiver to be un-joined.
• Wait until its green BNC LED is lit.
• Using the straightened paper-clip, momentarily depress the small push-button located
behind and slightly above the RJ45 LED until the green BNC LED goes off. The RJ45
LED should remain off.
• Release the paperclip.
• Observe that the BNC and RJ45 LEDs flash.
• Observe that the BNC and RJ45 LEDs turn off.
• Observe that the BNC goes on solid.
• Un-joining is now complete.
Page 3 of 12
If you are not sure that un-joining has been successful, remove and then re-apply power, and repeat.
Transceiver
#1
Transceiver
#2
Step One: Gather Materials
Step Two: Remove Label
Connect Hardware
Step Three: Transparent
view of push-button location
Step Five: Transceiver MAC address

INSTALLATION INSTRUCTIONS
NV-EC1701U NV-EC1701U
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
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 Con iguration
NV-EC1701U transceivers must be con igured 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 o the
control-room end.
or 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. or 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 o 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, he k the wire polarity. If the blue LEDs
blink, then the power supply is y ling on and off due to an
overload ondition. Che k for wire faults or ex essive 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. or 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

The NV-EC1701U transceivers provide transparent end-to-end
10-baseT or 100-BaseT connectivity with auto detection and
autocrossover. This means that IP cameras or other devices may
be installed at one end, and their data is transparently delivered
to the other end. Please read configuration instructions on page
3 before installing.
Wire distances up to 1,500ft (450m) are supported, although
local power may be required for extended distances. See pages
6 & 7.
The NV-EC1701U supports TCP/IP, UDP, HTTP, Multi-cast, and
other standard protocols. This allows for the transmission of other
network traffic besides streaming video.
or IP-based CCTV applications, there are some network config-
urations that are robust, and others that are not recommended.
In general, it is best to deploy a separate LAN exclusively or
video tra ic.
Although it is possible to place IP cameras onto the end-user’s
“Enterprise LAN”, there are several disadvantages in doing so.
These include:
Tra ic Management Considerations
When sharing the resources of a LAN, the nature of the traffic
must be well understood for it to operate efficiently. or most
end-users, the business use of their LAN is constantly changing,
critical for their day-to-day operations, and not managed by the
same group that manages their security. IP video can often con-
sume large amounts of bandwidth, which may or may not be
compatible with existing IT traffic.
Security Considerations
Most surveillance systems are installed specifically to protect
against breaches in security. A shared LAN provides potential
opportunities for unauthorized access to security assets. Sniffing
IP addresses can result in the unintended disclosure of IP cam-
eras or network vulnerabilities. Spoofing IP addresses could
result in the disruption of recording.
I you must pass IP camera video through “public” LANs,
ensure that video is recorded prior to leaving the secure
LAN. Then encrypt it by using a Virtual Private Network
(VPN) so that neither the video, nor its addressing is read-
able on the LAN. Many low-cost routers support VPNs.
LAN/WAN
Ethernet
Switch
IP Camera
6Watt PoE Cat5
328ft
( 100m)
IP Camera
Cat5
328ft
( 100m) Cat5
328ft
( 100m)
Figure 2 - IP Camera & NVR Installation
Network
Video
Recorder
Firewall
NV-EC1701U NV-EC1701U
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
48VDC Power Supply
Cat5
328ft
( 100m)
≤1,000ft (300m) Shielded 18/2
≤1,500ft (450m) 18/2 UTP or 4-pair Cat5
See Wire Distance Charts on page 7
or IP Distance Calculator available at www.nvt.com
TRANSCEIVER-TO-TRANSCEIVER NETWORK ARCHITECTURE
IP CAMERA & NVR CONSIDERATIONS
Page 5 of 12

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 ault/sa ety, never use more than two power supplies within a network.
Figure 3 - Alternate Power Supply Location
56V 90W
Power Supply
NV-EC1701U
NV-EC1701U
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 ● ([phone]
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 ● ([phone]
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

WIRE TYPE AND DISTANCE CAPACITY
Page 7 of 12
I R E T Y P E A N D D I S T A N C E C A P A C I T Y
The distance capability of wire is dependant on its ability to deliver DC power, and separately, to deliver high-frequency
data signals.
The graph below shows maximum power delivery when using a 48V power supply. If you are using a 56V power supply,
your distances will be 2.6 times those shown in figure 4. If you are not delivering power to your camera (or other remote
device), then this graph does not apply. Figure 5 shows the maximum network data rate.
A Distance Calculator can be found at www.nvt.com.
PoE devices require a minimum of 43V to operate. With a 48V supply, we have 5V of allowable voltage drop on the wire.
With a 56V supply, we have 13V of allowable voltage drop on the wire.
The voltage will dip in proportion to the remote (camera) load. The graph below shows what distances are supported for
various loads and wire types.
●The voltage will dip in proportion to the remote (camera) load. The graph below shows what distances are supported for
various loads and wire types.
●Start with the Powered Device (camera) wattage at the left. Sometimes PoE devices are listed as to their PoE Class rather
than wattage. If this is the case, use the colored classes instead.
●Now read over to the right until you find your kind of wire. Then look up (feet) or down (meters) to find your maximum wire
distance. If your wire is not among the examples, simply measure its total resistance and find that value on the right side
of the graph. The maximum supported wattage is on the left.
Figure 4 - Power Distance Chart
3.0 W
0 W
Wire Distance
Wire Distance
4.0 W
5.0 W
6.0 W
8.0 W
10 W
12 W
15 W
18 W
20 W
25 W
30 W
40 W
50 W
10 m
15 m 20 m
30 m
40 m
50 m
60 m
80 m
100 m
150 m 200 m 250 m
300 m
33 ft 49 ft 66 ft
98 ft
131 ft
164 ft
197 ft
262 ft
328 ft 492 ft 656 ft
820 ft
1000 ft
Total WireResistance
PoE Powered DeviceWattage
2.0 W
2.5 W
24 Ω
38 Ω
23 Ω
21 Ω
19 Ω
16 Ω
14 Ω
12 Ω
11 Ω
9 Ω
7 Ω
6 Ω
4 Ω
3 Ω
28 Ω
s
ss 4
4
s
ss 4
4
C
Cl
la
a
P
Po
oE
a
ss 4
s
ss 1
1
C
Cl
la
a
P
Po
oE
a
2
-
W
i
r
e
2
4
A
W
G
2
-
W
i
r
e
2
0
A
W
G
2
-
W
i
r
e
1
8
A
W
G
4
-
p
a
i
r
C
a
t
5
o
r
2
-
W
i
r
e
2
2
A
W
G
Figure 5 - Data Distance Chart
Wire Distance
Wire Distance
100 Mbps
90 Mbps
80 Mbps
70 Mbps
60 Mbps
50 Mbps
40 Mbps
30 Mbps
20 Mbps
10 Mbps
0 Mbps
10 m 15 m 20 m 30 m 40 m 50 m 60 m 80 m 100 m 150 m 200 m 250 m 300 m
33 ft 49 ft 66 ft 98 ft
131 ft 164 ft 197 ft 262 ft 328 ft 492 ft 656 ft
820 ft
1000 ft
Ethernet Aggregate Data Throughput
C
C
a
t
5
1
8
/
2
S
h
d
S
h
i
e
l
d
e
d
T
w
i
s
t
e
d
-
P
a
i
r

R J 4 5 E T H E R N E T I N T E R F A C E
Connectivity: RJ45, auto-crossover
Wire type: 4-pair Cat5 or better
Distance: up to 328ft (100m)
Speed: 10/100 Base T, half/full
duplex, auto-negotiation
auto-MDI/MDIX cross-over
Latency: 3mS
Data throughput:
85Mbps ±10% useable bandwidth per
network Example: our megapixel cameras,
all sharing a 2-Wire network, each
sending 20Mbps video stream(s).
Power output:
This Power Sourcing Equipment (PSE) supports
Powered Devices (PDs) that are compatible with
IEEE 802.3af/at, or PDs that draw up to 60 watts*.
or maximum power/distance, 48 or 56 VDC appears
on all eight RJ45 pins, and are currentprotected
and transient-protected.
P O E R C O N S U M P T I O N
Consumption per transceiver: 3.0 W @ 10 to 56VDC
Total system consumption: = total consumption of transceivers
+ total consumption of PDs
+ total power dissipated in the wire
B U I L D I N G I R I N G I N T E R F A C E
Connectivity:
UTP, STP, 18/2, or similar, One control room NV-EC1701U
transceiver may support multiple* remote NV-EC1701U
transceivers.
Impedance: 25 to 100Ω
Distance: See page 7
Transmission technology: O DM, 128 bit AES encryption
* I M P O R T A N T N O T E :
Distance will often be shorter due to power supply capacity
and wire voltage-drop. See Maximum Per-Camera Wire
Distance Chart on page 7. For ault /sa ety protection,
never use more than two power supplies within a
network system.
L E D S TAT U S I N D I C A T O R S
Power: Blue “Power On”
BNC 2-wire Interface: Green “Link”
RJ45 Interface: Green “Link”
M E C H A N I C A L / E N V I R O N M E N T A L
Transceiver body dimensions: 5.1 in (131mm) long
(excluding connectors) 1.3 in (33mm) high
1.5 in (38mm) wide
Transceiver weight: 5.1oz (145g)
Operating & -40° to 185° (-40°C to +85°C)
storage temperature: 20 to 85% RH non-condensing
Transient Immunity: 5x20µS 3000A, 6000V
ESD 20KV, 200p
P O E R S U P P LY
Power supplies are external inline, with an IEC380-C14 power
inlet and 6ft (1.8m) line-cord. Input voltage is 100 ~240VAC
50-60Hz. A molded P1J 5.5mm barrel connector provides
Class 2 (SELV) regulated output with one of these three ratings:
Use only the power cord provided with the
unit or equivalent UL approved type SPT-
2, SVT, or SJT, 18/3 AWG 100~240VAC,
1A 60°C Max. 15ft (4.5m) long. One end
with IEC380-C13 appliance coupler and the
other end with NEMA 1015P or equivalent
for your country.
60W power supply body dimensions: 4.90 in (125mm) long
1.25 in (32mm) high
2.00 in (50mm) wide
60W power supply weight: 10.6oz (300g)
90W power supply body dimensions: 5.70 in (145mm) long
1.25 in (32mm) high
2.36 in (60mm) wide
90W power supply weight: 1 lb (450g)
Power supply -22° to 122° (-30°C to +50°C)
operating temperature: 20 to 85% RH non-condensing
Power supply -40° to 185° (-40°C to +85°C)
storage temperature: 0 to 95% RH non-condensing
Transient Immunity: 5x20µS 3000A, 6000V
ESD 20KV, 200p
Power cord weight: 5.5oz (156g)
R E G U L AT O R Y
UL Listed to IEC/UL 60950-1 Complies with CC part 15B limits
Specifications subject to change without notice.
TECHNICAL SPECIFICATIONS
Page 8 of 12
+48VDC 60W
+56VDC 60W
+56VDC 90W
RoHS

MODEL NUMBERS
Page 9 of 12
NV-PS48-60W: 48V DC power supply, 60 watts
with IEC line cord
NV-PS56-60W: 56VDC power supply, 60 watts
with IEC line cord
NV-PS48-90W: 56V DC power supply, 90 watts
with IEC line cord
NV-PC4PR: RJ45 Patch Cord, 4-pair 3’ (1m) Grey
NV-DPSC4: Detachable Power Supply Cord Splitter 1:4 2ft
NV-RMEC16U: Rack mounting chassis, 19” x 1U
holds up to 4 NV-EC1701U transceivers
plus power supplies. Includes NV-DPSC4
Power Cord Splitter (NV-EC1701U and
NV-PS48-60W not included)
NV-EC1701U: Single transceiver
only, no power supply
Product
Accessories

Page 10 of 12
TRANSCEIVER KITS
Single Entry Station Eo2TMTransmission System
NV-EC1701U-KIT1:2NV-EC1701U Transceivers
1 NV-PS48-60W Power Supply
with IEC line cord
2 NV-PC4PR patch-cord
Dual Entry Station Eo2TM Transmission System
NV-EC1701U-KIT2:3NV-EC1701U Transceivers
1 NV-PS48-60W Power Supply
with IEC line cord
3 NV-PC4PR patch-cord
Triple Entry Station Eo2TM Transmission System
NV-EC1701U-KIT3:4NV-EC1701U Transceivers
1 NV-PS48-60W Power Supply
with IEC line cord
4 NV-PC4PR patch-cord
Quadruple Entry Station Eo2TM Transmission System
NV-EC1701U-KIT4:5NV-EC1701U Transceivers
1 NV-PS48-60W Power Supply
with IEC line cord
5 NV-PC4PR patch-cord

Page 11 of 12
MULTICAST PACKET SUPPORT
LAN/WAN
Ethernet Switch
Enbedded
IGMP
Network
Host
IP Camera
Cat5
NV-EC1701U NV-EC1701U
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
Power Supply
Figure 6 - Multicast Network
Network
Video
Recorder
Firewall
Cat5
2- wire Cable
On rare occasions, a customer will experience a problem where
a camera sending unicast packets performs flawlessly, but the
NV-EC1701Us fail to deliver multicast streams.
To understand this, we need to delve a little deeper into how
multicast networking works. To do this, we will first explore
unicast packet transmission.
With unicast packets, there is a source (the camera) and a desti-
nation (the NVR). Packets are generated by the source and
directed to a single destination. The first time a packet is sent, the
switch has never heard of the destination address. So it sends a
broadcast transmission to ALL destinations. The correct recipient
acknowledges the packet. The switch snoops in on that response
and memorizes which port is associated with that transmission.
Subsequent transmissions are directed ONLY to the recipient's
port, thereby reducing bandwidth on other parts of the network.
With multicast packets, the same bandwidth considerations
apply. Switches and routers do not routinely deliver multicast
traffic to all destinations. Instead they rely on a special control
protocol to identify and report which multicast traffic should go
where.
That protocol is called Internet Group Management Protocol
(IGMP). IGMP is a shared “querier” control resource that is imple-
mented on a host, such as a switch or router, within the network.
Virtually all routers and most switches are equipped with an IGMP
querier.
That host is responsible for sending IGMP queries to multicast
devices, and for generating an IGMP Report. That report is moni-
tored by switches and routers within the network. That monitoring
is called IGMP Snooping. These switches and routers keep a
state table and use it to determine to which ports to deliver each
multicast stream.
In practice, a multicast source (camera) sends its data not to the
destination, but to a fictitious “Group IP Address.” Destination
devices (the NVR) send a request to the IGMP host asking to be
included as a destination for that group.
Switches and routers allow these multicast packets through so
they can be received by those interested devices (NVR) and block
them from being delivered elsewhere. It would be inappropri-
ate or the switch to send a multicast stream everywhere, as
it would clog the network.
The NV-EC1701Us are not point-to-point devices. They join
together to function as a switch. Like a switch, they listen for
IGMP reports and block unknown multicast packets. This is
particularly important in a multi-camera environment, as we do
not want the stream from one camera being delivered to all other
cameras. That could generate too much traffic.
On rare occasions an installation will be created without the
required IGMP querier. If the switches are not equipped with IGMP
snooping then they just deliver all multicast traffic everywhere.
If the NV-EC1701Us do not receive IGMP reports, then they will
BLOCK UNKNOWN MULTICAST PACKETS, and the video will not
pass through.
An investigation can be performed as necessary using a Packet
Sniffer, such as WireShark.
The bottom line is that an IGMP querier is required for a properly
configured multicast network. Contact NVT for further information.

Confirm that the NVT transceivers have been configured to communi-
cate with each-other, per instructions on page 3.
If you are experiencing problems, attempt to simplify your setup. Test
each cable segment separately. or example, test the IP device
(camera) directly at the ethernet switch without other equipment. Then
add in the NVT transceivers, back-to-back. Test each segment of a long
cable-run independently. Attempt to isolate the problem.
Most IP camera installation problems involve configuring the IP camera
and the recorder to recognize each other. If in doubt, connect the
camera directly to the Ethernet switch, bypassing the transceivers.
Consult the IP camera and/or recorder installation manuals for configu-
ration instructions, or contact the camera or recorder manufacturer.
NVT has developed a Console Utility that can be downloaded from
www.nvt.com. Once installed on any Windows PC, the application
scours the network for NVT devices, and reports each of their MAC
addresses, as well as the MAC addresses of any other NVT devices
within its joined group.
Additional network tools, such as Packet Sniffers or Traffic generators
are available from other sources such as LAN Shark, LANTraffic, etc.
NVT customer support is available for consultation from 8:00 AM to 5:30
PM PST Monday through riday. In addition, emergency after-hours
callback support is available.
USA Office: (+1) [phone]
USA ax: (+1) [phone]
UK Office: (+44) (0)20 8977 6614
UK ax: (+44) (0)20 8973 1855
Email USA: www.nvt.com/email/info
Email UK: www.nvt.com/email/eusales
Web home page: www.nvt.com
Please call before returning units to NVT. Returned materials must have
a “Returned Materials Authorization” (RMA) number from NVT marked
on the outside of the shipping carton.
NVT warrants that the product conforms to NVT’s applicable published
specifications and is free of defects for the life of the product. There
shall be no other warranties, express, statuatory, or otherwise, including
any implied warranty of merchantability, of fitness, or any other obliga-
tion on the part of NVT with respect to any of the products. In the event
that any of the products is damaged, altered, or modified without the
express written consent of NVT, any warranty for those products will
cease and NVT will have no further liability as it pertains to those
products.
NVT assumes no responsibility for damages or penalties incurred result-
ing from the use of this product in a manner or location other than for
which it is intended.
NVT’s liability under any warranties shall be discharged by replacing or
repairing any part or parts which do not conform to the applicable
warranty under normal and proper use. NVT’s liability with respect to
any product shall not exceed a refund of the price received by NVT for
that product, and in no event shall NVT have any liability for any inciden-
tal, consequential, special, or indirect damages.
Some states do not allow the exclusion or limitation of special, inciden-
tal, or consequential damages, so the above limitations or exclusions
may not apply to you. This warranty gives you specific legal rights, and
you may also have other rights which vary from state to state.
This equipment has been tested and found to comply with the limits for
a Class B digital device, pursuant to part 15 of the CC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interfer-
ence to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment
does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the
following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and the receiver.
- Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
WARNING
Changes or modifications not expressly approved by the manufacturer
could void the user’s authority to operate the equipment.
TROUBLESHOOTING
NETWORK DIAGNOSTIC TOOLS
LIMITED LIFETIME WARRANTY
CUSTOMER SUPPORT
Copyright © 2013 NVT, Inc.
05/13
453-2137-1-E
Network Video Technologies
4005 Bohannon Drive • Menlo Park, CA 94025 • USA
(+1) 650.462.8100 • FA (+1) 650.326.1940
nvt.com • www.nvt.com/email
Page 12 of 12
FCC USER INFORMATION
PRODUCT RETURNS
Model NV-EC1701U Eo2TM
Ethernet over 2- ire Transceiver
with PoE Power
Complete Installation Guide