Download from Www.Somanuals.com. All Manuals Search And Download.
Verify that your package contains the following:
•
•
•
Model EN104 hub, Model EN108 hub, or Model EN116 hub
Mounting kit (for wall installation)
BNC T-connector and BNC 50 Ω terminator (only if you have purchased the Model EN108
hub or the Model EN116 hub)
•
•
•
This installation guide
Warranty & Owner Registration Card
Support Information Card
•
Power adapter and cord
Product Illustration
Front Panel of the Model EN104 hub
10BASE-T ports
10 BASE-T HUB EN104
LINK
Rx
Pwr (Power)
Col (Collision)
Normal/Uplink
push button
Front Panel of the Model EN108 hub
10 BASE-T HUB EN108
LINK
Rx
Pwr
Col
1
2
3
4
5
6
7
8
Front Panel of the Model EN116 hub
10 BASE-T HUB EN116
LINK
Rx
Pwr
Col
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
8732FA
Vista 10BASE-T Network Ports with Built-in LEDs
The front panel of the Model EN104 hub has four RJ-45 10BASE-T ports, the Model EN108 hub
has eight RJ-45 10BASE-T ports, and the Model EN116 hub has sixteen RJ-45 10BASE-T ports.
Two LEDs—the Link LED and the Rx LED—are built into each 10BASE-T port.
Link
LED
Rx
LED
8724EA
Model EN104/EN108/EN116 Ethernet Hub Installation Guide
Download from Www.Somanuals.com. All Manuals Search And Download.
LEDs
The table below describes the activity of the LEDs.
Label
Color
Activity Description
Pwr (Power)
Green
Amber
On
Power is supplied to the hub.
Col (Collision)
Blinking Data collision is occurring on the network. Note
that occasional collisions are normal.
Link
Green
On
The link between this port and the connected
device is good.
(located on the top left
corner of each vista
10BASE-T port)
Rx
Green
Blinking There is incoming data on the port.
(located on the top right
corner of each vista
10BASE-T port)
Active
(for BNC)
Green
Green
Green
Green
On
The link between the BNC port and the
connected device is good.
Rx
Blinking There is incoming data on the BNC port.
(for BNC)
Active
On
The link between the AUI port and the
connected device is good.
(for AUI)
Rx
Blinking There is incoming data on the AUI port.
(for AUI)
Normal/Uplink Push Button
The Normal/Uplink push button allows you to select Normal (MDI-X) wiring for direct PC
connection. The push button also allows you to select Uplink (MDI) wiring for connection to a
hub or a switch through port 4 on the Model EN104 hub, port 8 on the Model EN108 hub, or
port 16 on the Model EN116 hub. This uplink configuration eliminates the need to use a crossover
cable. The other 10BASE-T ports are permanently configured for normal wiring for connection to
a PC.
Rear Panel
The rear panel of the hub has a BNC port that you can use to connect to a backbone network or
other PCs using thin coaxial cable.
The rear panel of the Model EN108 hub and the Model EN116 hub also has an AUI port in
addition to the BNC port. You can use the AUI port with the appropriate transceiver to connect the
hub to a backbone network using thin coaxial cable, thick coaxial cable, fiber optic cable, or
10BASE-T wiring.
Model EN104/EN108/EN116 Ethernet Hub Installation Guide
Download from Www.Somanuals.com. All Manuals Search And Download.
The rear panel also includes a DC power receptacle.
BNC port LEDs
BNC port
12Vdc 1.2A
Active
Rx
BNC
–
+
Rear Panel of the Model EN104 hub
AUI port LEDs
Power receptacle
AUI port
12Vdc 1.2A
BNC
AUI
Active
Rx
Active
Rx
–
+
Rear Panel of the Model EN108 hub
12Vdc 1.2A
BNC
AUI
Active
Rx
Active
Rx
–
+
Rear Panel of the Model EN116 hub
8738FA
Installation Procedures
Prepare the Site
Before you begin installing your hub, prepare the installation site. Make sure your operating
environment meets the operating environment requirements of the equipment.
Characteristic
Requirement
Temperature
Ambient temperature between 0° and 40° C (32° and 104° F).
No nearby heat sources such as direct sunlight, warm air exhausts,
or heaters.
Operating humidity
Ventilation
Maximum relative humidity of 90%, noncondensing.
Minimum 2 inches (5.08 cm) on all sides for cooling.
Adequate airflow in room or wiring closet.
Operating conditions
Service access
At least 6 feet (1.83 m) to nearest source of electromagnetic noise
(such as photocopy machine or arc welder).
Minimum 12 inches (19.68 cm) front and back for service access
and maintenance. Front and back clearance for cables and wiring
hardware such as punchdown blocks.
Power
Adequate power source within 6 feet (1.83 m).
Wiring hardware
Wiring hardware, such as punchdown blocks or patch panels,
should be complete before installing the hub.
Model EN104/EN108/EN116 Ethernet Hub Installation Guide
Download from Www.Somanuals.com. All Manuals Search And Download.
Install the Hub
To install your hub on a flat surface, you do not need any special tools. Be sure the hub is
positioned with at least 2 inches of space on all sides for ventilation.
To install the hub on a wall, measure the distance between the mounting hole on the back of the
hub and mark the wall to match the location of the mounting holes on the hub. At the marked
location, screw into the wall the two screws that you received with the mounting kit included in
your package contents. Be sure to choose a location that is near the devices to be connected, is
close to an electrical outlet, and provides at least 2 inches of space all around the hub for
ventilation.
Connect a PC to the Hub
You can connect PCs, Apple Macintosh computers, UNIX workstations, or any device equipped
with a 10BASE-T Ethernet interface to the RJ-45 ports on your hub by using twisted pair Ethernet
cables.
To connect any of the RJ-45 ports on your hub to a PC, use a regular straight-through UTP cable.
If you are connecting using port 4 on the Model EN104 hub, port 8 on the Model EN108 hub, or
port 16 on the Model EN116 hub, set the Normal/Uplink push button to Normal.
(The Model EN108 hub is
shown in the illustration.)
P
w
r
C
o
l
1
2
3
4
5
N
o
rm
a
l/U
p
lin
k
6
7
8
8734FA
Note: Ethernet specifications limit the cable length between your PC or server and
the hub to 328 feet (100 meters) in length.
ConnecttheHubtoaNetwork
Cascading refers to connecting hubs together to increase the number of ports or the number of
users supported on the network. The 10BASE-T ports can be used to cascade hubs together.
The twisted pair cable extended from a 10BASE-T port (or UTP port) is called a twisted pair
segment and can be up to 100 meters (m) in length. The 10BASE-T ports, with the exception of
port 4 on the Model EN104 hub, port 8 on the Model EN108 hub, or port 16 on the Model EN116
hub, are MDI-X (or Normal) ports. Use the following table as a guide for selecting the appropriate
network cable.
Model EN104/EN108/EN116 Ethernet Hub Installation Guide
Download from Www.Somanuals.com. All Manuals Search And Download.
Connecting Port
on the Hub
Connecting Device
Cable Used
Model EN104 hub:
Ports 1–3
PC, server, or router
Hub or switch
Straight-through cable
Crossover cable
Ports 1–3
Model EN108 hub:
Ports 1–7
PC, server, or router
Hub or switch
Straight-through cable
Crossover cable
Ports 1–7
Model EN116 hub:
Ports 1–15
PC, server, or router
Hub or switch
Straight-through cable
Crossover cable
Ports 1–15
Set the Normal/Uplink Push Button
If you are connecting to port 4 on the Model EN104 hub, port 8 on the Model EN108 hub, or port
16 on the Model EN116 hub, use the following table. Determine the type of cable to use and how
to set the Normal/Uplink push button.
Connecting Port
Connecting Device
Cable Used
Port 4, port 8, or port 16 PC, server, or router
set to Normal
Straight-through cable
Port 4, port 8, or port 16 Hub or switch
set to Uplink
Straight-through cable
Cascade the Hub
The following illustration shows cascading hubs together in a hierarchical star through
the 10BASE-T ports and indicates the setting of the Normal/Uplink push button on each hub.
Model EN116 hub
10
B
A
S
E
-T
HU
B EN116
LINK
Rx
Pwr
Col
Normal
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Model EN108 hub
Model EN108 hub
10
B
A
S
E
-T
H
U
B
EN108TP
10
B
A
S
E
-T
H
U
B
EN108TP
Pwr
Col
Pwr
Col
Uplink
Uplink
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Model EN104 hub
Uplink
Model EN104 hub
Uplink
A
B
8735FA
Note: Ethernet specifications limit the number of hubs with twisted pair links in any
communication path to five, as shown in the example. When PC “A” communicates
with PC “B,” the communication path goes from hub 4 to hub 2, to hub 1, to hub 3,
and then to hub 5 (or five paths).
Model EN104/EN108/EN116 Ethernet Hub Installation Guide
Download from Www.Somanuals.com. All Manuals Search And Download.
The following illustration shows cascading hubs together daisy-chain style and indicates the
setting of the Normal/Uplink push button on each hub.
Model EN104 hub
10 BASE-T HUB EN104
LINK
Rx
Normal
Model EN108 hub
10 BASE-T HUB EN108
LINK
Rx
Pwr
Col
Uplink
1
2
3
4
5
6
7
8
Model EN116 hub
10 BASE-T HUB EN116
LINK
Rx
Pwr
Col
Uplink
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
8733FA
Connect to a Network Using the BNC Port
The BNC port on the rear panel of the hub is used for connecting to a thin coaxial segment. You
can connect other Model EN104/EN108/EN116 hubs, servers, workstations, or other devices to
the BNC port. A BNC-T connector is inserted in the port, and the 50 Ω terminator terminates the
connection at each end device. By using the BNC port for cascading, you treat each connected hub
as just another node on the coaxial segment.
The separation marks in the coaxial cable between the hubs in this illustration represent the
incorporation of other devices and show that interconnection is not limited to hubs.
BNC T- connector
Model EN104 hub
BNC 50 terminator
Model EN108 hub
Model EN116 hub
BNC 50 terminator
8736FA
Note: Ethernet specifications limit a BNC segment to 30 BNC connections, specify a
minimum of 1.64 feet (0.5 m) between any two stations, and limit segments to 607 feet
(185 m) in length.
Model EN104/EN108/EN116 Ethernet Hub Installation Guide
Download from Www.Somanuals.com. All Manuals Search And Download.
Connect to a Network Using the AUI Port
The AUI port on the rear panel (found only on the Model EN108 hub and the Model EN116 hub)
is normally used for connecting a thick coaxial segment.
With the right type of transceiver, you can use the AUI port to connect to most types of network
media, including 10BASE-T twisted pair cable or thin coaxial, thick coaxial, and 10BASE-FL
fiber optic cables.
Note: All transceivers connected to the AUI port must have the signal quality error
(SQE) test function disabled. Refer to your transceiver documentation for information
about disabling the SQE test function.
Cable terminator device
AUI cable
Thick
coaxial
cable
10BASE-5
transceiver
Model EN108 hub and Model EN116 hubs
8737FA
Note: Ethernet specifications limit thick coaxial segments to 100 stations and
1,640 feet (500 m) in length, and they specify that the AUI cable between the hub
and the transceiver is limited to 164 feet (50 m).
Verify Installation
To complete the installation, connect the power cord first to the power receptacle on the hub
rear panel and then to the power outlet on the wall. When power has been applied to the hub:
•
•
•
•
The green Pwr (Power) LED on the front panel is on.
The green Link LED on each connected port is on.
The green Active LED on each connected AUI port is on.
The green Active LED on each connected BNC port is on.
If there are any problems, refer to “Troubleshooting Information.”
Model EN104/EN108/EN116 Ethernet Hub Installation Guide
Download from Www.Somanuals.com. All Manuals Search And Download.
Troubleshooting Information
Refer to this table and the information that follows the table to troubleshoot your hub.
Symptom
Cause
Solution
Amber Col LED
blinks.
There is data collision on Data collision is normal on Ethernet networks.
the network. No action is required.
Amber Col LED blinks There is data collision on Make sure connected devices are operating in
excessively.
half-duplex mode. The hub is not compatible
with devices that operate in full-duplex mode.
the network because the
network is extremely
busy
If you suspect that there might be a defective
device on the network, disconnect devices one
at a time to isolate the defective unit on the
network.
or defective devices are
connected on the
network that cannot
detect network traffic or If the network is extremely busy, you may have
collision.
to segment the network with an Ethernet switch
such as a NETGEAR Ethernet switch or to
upgrade your network to Fast Ethernet
operation.
Wrong or miswired
cables are used.
Make sure the correct UTP cables are used.
See the table in the installation section of this
guide for cable use and Normal/Uplink push
button information. Note that home telephone
cables can cause a collision condition and
cannot be used in place of UTP cables.
Green Link LED is
off when a cable is
attached.
The port is not detecting Check for a bad cable, cable pairs that are not
a successful link.
correctly wired, or loose connectors. Make sure
that there is power to both the hub and the
Ethernet transceiver on the connected device.
Green Link LED is not The port is not detecting Check for a bad cable, cable pairs that are not
blinking when there is data transmission.
data transmission.
correctly wired, or loose connectors. Make sure
that there is power to both the hub and the
Ethernet transceiver on the connected device.
Green Active LED on The port is not detecting Make sure that each segment is terminated
the BNC port is not
on when the port is
connected.
a successful link.
with a BNC 50 terminator at both ends. Check
for a bad cable.
Green Rx LED on
the BNC port is not
blinking when there is
data transmission.
The port is not detecting Check for a bad cable or loose connectors.
data transmission.
Make sure that there is power to both the hub
and the connected device.
Green Active LED on The port is not detecting Make sure that the AUI transceiver is
the AUI port is not
on when the port is
connected.
a successful link.
functioning properly, the coaxial segment is
terminated correctly, the segment is not
disconnected along the cable length, and the
signal quality error (SQE) test on the
transceiver is disabled. Refer to your
transceiver documentation for instructions on
setting the SQE.
Green Rx LED on the The port is not detecting Check for a bad cable or loose connectors.
AUI port is not
data transmission.
Make sure that there is power to both the hub
blinking when there is
data transmission.
and the connected device.
Model EN104/EN108/EN116 Ethernet Hub Installation Guide
Download from Www.Somanuals.com. All Manuals Search And Download.
Network Interface Cards
Make sure the network interface cards installed in the workstations are in working condition and
the software driver has been installed.
Hub Integrity
If required, verify the integrity of the hub by resetting it. Turn power to the switch off and then
back on. If the problem continues and you have completed all the preceding diagnoses, contact
NETGEAR Customer Support. For the phone number of the representative in your area, see
“Customer Support.”
Cable and Connector Information
Twisted Pair Cables
For two devices to communicate, the transmitter of each device must be connected to the receiver
of the other device. The crossover function is usually implemented internally as part of the
circuitry in the device. Most ports on switches and repeaters have media-dependent interfaces with
crossover ports. These ports are referred to as MDI-X or Normal ports. Computer and workstation
adapter cards are usually media- dependent interface ports referred to as MDI or Uplink ports.
The figures illustrate the use of straight-through and crossover twisted pair cables.
Straight-through
twisted pair cable
Uplink or
MDI port
Normal or
MDI-X port
1
Tx
2
1
Rx
Tx
2
3
Rx
6
3
6
Crossover
Normal or
Normal or
twisted pair cable
MDI-X port
MDI-X port
1
1
Rx
Rx
2
2
3
3
Tx
6
Tx
6
8146EC
RJ-45 Connector
The RJ-45 connector (shown in the illustration with an RJ-45 plug) is used to connect
workstations, hubs, and switches through unshielded twisted pair cable. The RJ-45 connector
accepts four-pair Category 3 or Category 5 UTP cable. Only two pairs are used for 10BASE-T
wiring.
12345678
8
1
711EA
Model EN104/EN108/EN116 Ethernet Hub Installation Guide
Download from Www.Somanuals.com. All Manuals Search And Download.
Normal Assignment:
Ports 1–3 on the
Model EN104 hub
Ports 1–7 on the
Model EN108 hub
Ports 1–15 on the
Model EN116 hub
Uplink Assignment:
Port 4 on the
Model EN104 hub
Port 8 on the
Model EN108 hub
Port 16 on the
RJ-45 Connector
Pin Assignment
Model EN116 hub
1
Input Receive Data +
Input Receive Data -
Output Transmit Data +
Output Transmit Data -
Not used
Output Transmit Data +
Output Transmit Data -
Input Receive Data +
Input Receive Data -
Not used
2
3
6
4, 5, 7, 8
AUI Connector
The AUI connector for the hub connects the hub through an external transceiver to other devices.
An inter-repeater fiber link using a 10BASE-F transceiver is an example of such an application.
AUI connector
1
8
15
9
8148EA
AUI Connector Pin Assignment
Signal
1, 4, 11, 14, 15
Ground
CI-A
2
3
DO-A
DI-A
5
6
+ 12 V DC return
7, 8
9
Not used
CI-B
10
12
13
DO-B
DI-B
+ 12 V DC (500 mA maximum)
BNC Connector
The BNC connector for the hub supports 10 Mbps data transmission and connects the hub to other
devices.
BNC connector
Center conductor
Ground shield
1
2
8149EA
Model EN104/EN108/EN116 Ethernet Hub Installation Guide
Download from Www.Somanuals.com. All Manuals Search And Download.
The BNC port on the hub, with the BNC T-connector and the 50 Ω terminator, is used for
connecting to a thin coaxial segment.
BNC T-connector
50 Ω terminator
50
OHM
8150FA
Technical Specifications
General Specifications
Network Protocol and Standards Compatibility
IEEE 802.3i, 10BASE-T, 10BASE-2, 10BASE-5 Ethernet
Data Rate
Interface
10 Mbps, Manchester encoded
10BASE-T ports (RJ-45), BNC port,
AUI port (Model EN108 hub and Model EN116 hub only)
Power Consumption
Model EN104 hub
11.0 W
16.5 W
20.5 W
Model EN108 hub
Model EN116 hub
DC Output Voltage (Power Adapter):
Model EN104 hub
1.2 V DC@ 1200 mA max., 47 to 63 Hz
12 V DC @ 1200 mA max., 47 to 63 Hz
12 V DC @ 1200 mA max., 47 to 63 Hz
Model EN108 hub
Model EN116 hub
Physical Specifications
Dimensions:
Model EN104 hub
3.37 by 4.0 by 1.1 in.
94 by 101 by 28 mm
Model EN108 hub
Model EN116 hub
6.2 by 4.0 by 1.1 in.
158 by 101 by 28 mm
11.3 by 4.0 by 1.1 in.
286 by 101 by 28 mm
Weight:
Model EN104 hub
0.74 lb (0.34 kg)
1.17 lb (0.53 kg)
1.97 lb (0.89 kg)
Model EN108 hub
Model EN116 hub
Environmental Specifications
Operating temperature:
Operating humidity:
0° to 40° C (32° to 104° F)
90% maximum relative humidity, noncondensing
Electromagnetic Emissions
CE mark, commercial
FCC Part 15 Class A
EN 55 022 (CISPR 22), Class A
VCCI Class 1 ITE
Electromagnetic Susceptibility
CE mark, commercial
Electrostatic discharge (ESD):
Radiated electromagnetic field:
Electrical fast transient/burst:
Electrical surge:
IEC 801-2, Level 2/3/4
IEC 801-3, Level 2
IEC 801-4, Level 2
IEC 801-5, Level 2
Safety Agency Approvals for Power Adapter
CE mark, commercial
UL listed (UL 1950)
CSA certified (CSA 22.2 #950)
TUV licensed (EN 60 950)
T-Mark
Model EN104/EN108/EN116 Ethernet Hub Installation Guide
Download from Www.Somanuals.com. All Manuals Search And Download.
© 1999 by NETGEAR, Inc. All rights reserved.
Trademarks
Bay Networks is a registered trademark of Bay Networks, Inc.
NETGEAR is a trademark of Bay Networks, Inc.
All other trademarks and registered trademarks are the property of their respective owners.
Statement of Conditions
In the interest of improving internal design, operational function, and/or reliability, NETGEAR reserves the right to make
changes to the products described in this document without notice.
NETGEAR does not assume any liability that may occur due to the use or application of the product(s) or circuit layout(s)
described herein.
Certificate of the Manufacturer/Importer
It is hereby certified that the NETGEAR Model EN104 hub, Model EN108 hub, and Model EN116 hub have been suppressed
in accordance with the conditions set out in the BMPT-AmtsblVfg 243/1991 and Vfg 46/1992. The operation of some
equipment (for example, test transmitters) in accordance with the regulations may, however, be subject to certain restrictions.
Please refer to the notes in the operating instructions.
Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market and has
been granted the right to test the series for compliance with the regulations.
Voluntary Control Council for Interference (VCCI) Statement
This equipment is in the first category (information equipment to be used in commercial and/or industrial areas) and conforms
to the standards set by the Voluntary Control Council for Interference by Data Processing Equipment and Electronic Office
Machines that are aimed at preventing radio interference in commercial and/or industrial areas.
Consequently, when this equipment is used in a residential area or in an adjacent area thereto, radio interference may be caused
to equipment such as radios and TV receivers.
Federal Communications Commission (FCC) Compliance Notice: Radio Frequency Notice
Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of
the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy. If it is not
installed and used in accordance with the instruction manual, it may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required to
take whatever measures may be necessary to correct the interference at their own expense.
EN 55 022 Statement
This is to certify that the NETGEAR Model EN104 hub, Model EN108 hub, and Model EN116 hub are shielded against the
generation of radio interference in accordance with the application of Council Directive 89/336/EEC, Article 4a. Conformity
is declared by the application of EN 55 022 Class A (CISPR 22).
This is a Class A product. In a domestic environment, this product may
cause radio interference, in which case the user may be required to take
appropriate measures.
Canadian Department of Communications Radio Interference Regulations
This digital apparatus (NETGEAR Model EN104 hub, Model EN108 hub, and Model EN116 hub) does not exceed the Class
A limits for radio-noise emissions from digital apparatus as set out in the Radio Interference Regulations of the Canadian
Department of Communications.
Règlement sur le brouillage radioélectrique du ministère des Communications
Cet appareil numérique (NETGEAR Model EN104 hub, Model EN108 hub, et Model EN116 hub) respecte les limites de
bruits radioélectriques visant les appareils numériques de classe
radioélectrique du ministère des Communications du Canada.
A
prescrites dans le Règlement sur le brouillage
Model EN104/EN108/EN116 Ethernet Hub Installation Guide
Download from Www.Somanuals.com. All Manuals Search And Download.
NETGEAR, Inc.
A Bay Networks Company
4401 Great America Parkway
Santa Clara, CA 95054 USA
Phone: 888-NETGEAR
Download from Www.Somanuals.com. All Manuals Search And Download.
|