LevelOne EHU-0500T User manual

10Mbps ETHERNET HUB
USER’S MANUAL

10Mbps Ethernet Hub
USER’S MANUAL
Trademarks:
All product and brand names are trademarks and/or registered
trademarks of their respective companies.

Federal Communications Commission Statement
This equipment generates, uses and radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. This equipment
has been tested and found to comply with the limits for a Class A
computing device, pursuant to Part 15 of the FCC rules. These limits
are designed to provide reasonable protection against harmful
interference when operated in a commercial environment. Operation
of this equipment in a residential area is likely to cause interference, in
which case the user, at his own expense, will be required to take
whatever measures are necessary to correct the interference.
CE Declaration of Conformity
This equipment complies with the requirements relating to
electromagnetic compatibility, EN55022 class A for ITE and
EN50082-1, the essential protection requirement of Council Directive
89/336/EEC on the approximation of the laws of the Member States
relating to electromagnetic compatibility.
Table of Contents
Chapter 1. INTRODUCTION.................................1
10Mbps Ethernet hub................................................. 1
Product Features............................................. 1
Product Specifications.....................................2
Chapter 2. INSTALLATION..................................5
Twisted Pair cable..................................................5
Interconnection Guidelines....................................6
Establishing a Twisted Pair Network.....................8
Cascading the hub by Uplink port.........................9
CHAPTER 1

INTRODUCTION
Congratulations on your purchase of a Ethernet hub. Your hub was
designed and manufactured to give you years of trouble-free and
reliable service.
The hub is designed for plug-and-play installation and easy
management. The hub provides an Uplink connection for your
network expansion via a RJ-45 connector, making it easy to link two
hubs together.
The hub features Link/Activity LEDs to show the connection and
activity status of each port. Power and Collision indicators show the
status of the hub as a whole.
Product Features
lCompliance to IEEE 802.3 10Base-T/2 standard.
lAutomatic partitioning function of each port to isolate network
failure.
lLED indicators for each twisted pair port for network link and
activity reporting diagnosis.
lCompact design in mini size.
lThe hub’s housing made by Aluminum material provides the
excellent performance for heat dispatching and EMI.
1
Product Specifications
Media EHU-0500T EHU-0501TB EHU-0900TB
10Base-T/STP 5 48
10Base-2/BNC 11
Uplink port 1 11
LED indicators
Power/PWR ---
Collision/COL ---
BNC Partition --
LINK ---
Activity/ACT ---
Utilization UTIL% -
Power Supply
Keyboard pwr cable 5V 5V
Power Adapter 7.5V/1A 7.5V/1A 5V/2A
Safety Regulation
CE µµµ
FCC class A µµµ
Dimension (mm) 141x102x30 128x102x30 190x102x30
Housing Aluminum Aluminum Aluminum
Packing list
Hub EHU-0500T EHU-0500TB EHU-0900TB
Power Supply üüü
Power Cord
Manual üüü
50-ohm Terminator üü
T-connector üü
2
Product Specifications

Media 17 port
10Base-T/STP 16
10Base-2/BNC 1
Uplink port 1
LED indicators
Power/PWR -
Collision/COL -
BNC Partition -
LINK -
Activity/ACT -
Power Supply
Power Adapter 5V/2A
Safety Regulation
CE µ
FCC class A µ
Dimension (mm) 310x102x30
Housing Aluminum
Packing list
Hub 17 port
Power Supply ü
Power Cord
Manual ü
50-ohm Terminator ü
T-connector ü
3
The Rear and Front Panel of PALM Hub
Uplink TP5 TP4 TP3 TP2 TP1 DC IN
3
(The Rear Panel of EHU-0500T)
PWR COL TP1 2 3 4 5
LINK?ACT-
(The Front Panel of EHU-0500T)
BNC TP4 TP3 TP2 TP1 Uplink DC IN
(The Rear Panel of EHU-0501TB)
PWR COL BNC TP1 2 3 4 UTLI%
1 8 16 32 64
LINK?ACT-
(The Front Panel of EHU-0501TB)
BNC Uplink TP8 TP7 TP6 TP5 TP4 TP3 TP2 TP1 DC
IN
(The Rear Panel of EHU-0900TB)
PWR COL BNC TP1 2 3 4 5 6 7 8
LINK?ACT-
(The Front Panel of EHU-0900TB)
4
The Rear and Front Panel of PALM Hub

BNC Uplink TP16 TP15 TP14 TP13 TP12 TP11 TP10 TP9 TP8 TP7 TP6 TP5 TP4 TP3 TP2 TP 1 DC IN
(The Rear Panel of EHU-1700TB)
PWR COL BNC TP1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
LINK?ACT-
(The Front Panel of EHU-1700TB)
5
LED indicators:
Power/PWR: Lit whenever the hub is connected to a
power source and is turned on.
Collision/COL: Lit whenever a packet collision occurs on
the Ethernet network. A collision means that
two or more stations have tried to transmit the
same time. Frequent collisions may mean that
network segment is congested.
Link/TP: Lit when there is a good connection between
the workstation and the port that is connected
to.
Activity/ACT: Blinked whenever a packet is transmitted or
received.
BNC: Lit when the BNC port didn’t connect the
50-ohm Terminator or Coaxial cable.
Blinks when the data is transmitted.
Rear Panel indicators:
Uplink TP: This is a module, you may use either the
Uplink for cascade another hub or TP port for
normal workstation connection.
6
CHAPTER 2

INSTALLATION
TWISTED PAIR CABLE
You may use Cat. 3 or better cables for your 10Base-T Ethernet
environment. It is important that the pairings of wires in the modular
plug match the pairs in the modular jack as well as the horizontal and
backbone wiring. If they don’t, the data being transmitted may be
paired with incompatible signals.
Pair 1 (Blue)
Cat. 5. Cable Pair 2 (Green)
Pair 3 (Orange)
Pair 4 (Brown)
The pin assignment on modular jack:
+ 1 (Orange)
2 Pair 3
+ 3
4 (Blue) (Green)
5 Pair 1 Pair 2
6
7 (Brown)
8 Pair 4
7
INTERCONNECTION GUIDELINES
The Ethernet Hub makes your various types of Ethernet networks
interconnection comes true. Using the hub, you can efficiently build
up and flexibly interconnect twisted-pair Ethernet networks.
Furthermore, having great expansion capability, the hub keeps your
existing coaxial Ethernet system still valuable, capable of connecting
different Ethernet cabling systems together with wide range of
configuration.
No matter what kind of medium and configuration you choose to
build up your network, certain guidelines must be observed.
1. The Distance Guidelines of Twisted-pair Wire, Coaxial Cable.
Medium Connection Max. Distance
Twisted Pair hub to station 100 meters
Twisted Pair hub to hub 100 meters
Twisted Pair hut to AUI adapter 100 meters
Thin cable hub to hub 185 meters
2. Guidelines for the maximum Ethernet Network Length
lA maximum of three to four Ethernet hubs or repeaters may be
attached within the path between any two stations, according to
your network environment.
lOnce three coaxial segments are used, the remainder must be a
10Base-T link segment.
8
Referring to the following examples will improve your understanding:

I. Network Interconnection via Twisted-Pair Wire:
100M
100M
100M
100M
100M
Note: The maximum Ethernet network length via twisted-pair is
500 meters.
II. Network Interconnection via Thin cable:
185M(Thin cable) 185M 185M
185M
100M (TP cable) 100M
Note: The maximum Ethernet network length via thin cable is 755
meters. (Thin cable = RG-58 or Coaxial cable)
9
Establish a Basic Twisted-Pair Network
1. Placing the hub
The hub should be located in a secure place accessible only to the
network administrator. It should be close to a power source, since it
requires power in order to operate.
When a suitable location is identified, connect one end of the power
to the hub and plug the other end into the power outlet.
After plugging the hub into a power outlet, you should check the
Power LED. If the power LED lights, then the hub is receiving power
and you can go on to the next step.
2. Connecting to the network
Once you have found an appropriate place for your hub, you can
connect network stations to it using 10Baes-T twisted pair, 10Base2
thin coaxial.
For twisted pair connections, you should use Category 3 or better
twisted pair cable. Your cable should be installed by qualified
professional to insure that every part of your installation is capable of
carrying 10Base-T signals.
3. Connecting 10Base-T Twisted Pair Cabling
To connect station using twisted pair cabling, simply plug the cable’s
RJ-45 connector into an available RJ-45 connector on the hub.
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4. Connecting 10Base-2 Thin Coaxial Cabling
To connect the 10Base-2 network, attach the cable’s BNC T
connector to the BNC port on the hub.

Note: If the BNC port on the hub is not used, a 50 ohm
terminator must be attached on it.
Cascading the hubs by Uplink port
When connecting two hubs, one hub is used UpLink port and the
other end is on the normal port of hub. The UpLink port connect
directly to a normal Twisted Pair cable, and the crossover cable is not
needed.
Up to 7 PCs
Uplink TP8 TP7 TP6 TP5 TP4 TP3 TP2 TP1 DC IN
Up to 6 PCs
Uplink TP8 TP7 TP6 TP5 TP4 TP3 TP2 TP1 DC IN
Up to 6 pcs
Uplink TP8 TP7 TP6 TP5 TP4 TP3 TP2 TP1 DC IN
Up to 4 PCs
Up to 7 pcs
Uplink TP8 TP7 TP6 TP5 TP4 TP3 TP2 TP1 DC IN
(Diagram illustrates of 8 port 10Base-T hub cascading)
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