LevelOne EHU-0507T User manual

LevelOne
EHU-0507T
EHU-0507TB
EHU-0807T
EHU-0907TB
5/8/9 Port PalmCon 10MHUB
User’s Guide

FCC Warning
This equipment has been tested and found to comply
with the regulations 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 and, if not installed and used in accordance
with this user’s guide, may cause harmful interference
to radio communications. Operation of this equipment
in a residential area is likely to cause harmful
interference, in which case the user will be required to
correct the interference at his own expense.
CE Mark Warning
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 adequate
measures.

Table of Contents
INTRODUCTION............................................................................1
PRODUCT FEATURES.....................................................................1
THE FRONT PANEL OF PALM SIZE HUBS...................................2
THE REAR PANEL OF PALM SIZE HUBS.....................................3
LED INDICATORS..........................................................................4
REAR PANEL INDICATORS.............................................................4
Twisted-pair Jacks..................................................................4
Uplink Jack..............................................................................5
Power Jack..............................................................................5
INSTALLATION..............................................................................6
INSTALLINGTHE HUB...................................................................6
CONNECTING THE POWERADAPTER........................................10
CABLES AND CONNECTORS........................................................10
CROSSOVER CABLES...................................................................11
SPECIFICATIONS.......................................................................10
GENERAL......................................................................................10
ENVIRONMENTAL AND PHYSICAL.............................................10
P/N: 6012-0161110 Rev.01

1
Introduction
Thank you for choosing the LevelOne 5/8/9 Port 10Mbps
PalmCon Hub. The 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 or more hubs together.
The hub features LINK/RX LEDs to show the connection and
receive status of each twisted pair port. PWR and COL
indicators show the status of the hub as whole.
Product Features
üCompliance to IEEE 802.3 10BASE-T/2 standard.
üAutomatic paritioning function of each port to isolate
network failure.
üEthernet connections support Category 3 or better
twisted-pair cable.
üLED indicators for each twisted pair port for link and
receive reporting diangnosis.
üUplink jack for easy linking of two hubs to further expand
the network.
üCompact design in palm size.
üThe hub’s housing made by Plastic materil.

2
The Front Panel of PalmCon Hubs
EHU-0507T 5 Port 10MbpsPalmCon Hub
PWR Link/Rx 1 2 3 4 5
EHU-0507T
EHU-0507TB 5 Port 10MbpsPalmCon Hub
PWR Link/Rx
BNC
1 2 3 4 5
EHU-0507TB
Link/Rx
PWR
1 2 3 4 5 6 7 8
EHU-0807T
PWR
Link/Rx
BNC
EHU-0907TB

3
The Rear Panel of PalmCon Hubs
EHU-0507T
EHU-0507TB
EHU-0807T
EHU-0907TB

4
LED Indicators
Power (PWR): This indicator lights gr
een when the hub
is receiving power, otherwise, it is off.
Collision (COL): This indicator indicates data collisions
on
the respective Ethernet
segments of the
hub. Whenever a collision is dete
cted, the
respective COL indicator will briefly
blink amber.
Link/Receive:
(LINK/RX)
This indicator green when the port is
connected to a Ethernet station
, If the
station to which the hub is connected is
powered off, or if
there is a problem with
the link, the LED
will remain off. And the
indicator blinking green when the data
will be received to all other connected
ports.
BNC: This indicator blinking green when the
data is transmitted.
Rear Panel Indicators
Twisted-pair Jacks
Use these jacks connect stations to the hub. These are MDI-X
(Medium Dependent Interface, Cross-Wired) jacks, which
means you can use ordinary stright-through twisted-pair cables
to connect user mechines and servers to the hub through them.
If you need to connect another device with an MDI-X jack,

5
such as another hub or an Ethernet switch, you should use a
crossver cable, or make the connection using the Uplink jack.
Uplink Jack
The Uplink jack is an MDI-II jack, which means you can
connect the hub (or a hub stack) to a device with an MDI-X
port using an ordinary straight-through cable, making a
crossover cable unnecessary.
Port1 and the Uplink port is really the same port, except thar
their pinouts are different. Do not use both Port-1 (1X) and
the Uplink port at the same time.
Power Jack
For the External power adapter.

6
Installation
Installing the Hub
The site where you install the hub may greatly affect
its performance. When installing, consider the
following pointers:
Install the hub in a fairly cool and dry place, for
the acceptable temperature and humidity operating
ranges.
Install the hub in a site free from strong
electromagnetic field generators (such as motors),
vibration, dust, and direct exposure to sunlight.
Leave at least 10 cm of space at the front and rear
of the hub for ventilation.
Install the hub on a sturdy, level surface that can
support its weight. When installing the hub on a
level surface, attach the rubber feet to the bottom of
each device. The rubber feet cushion the hub and
protect the hub case from scratches.
1

7
2

8
3

9

10
Connecting the Power Adapter
Power is supplied to the Ethernet Hub through an AC
power adapter.
Cables and Connectors
Cable characteristics: Category 3 or better
unshielded twisted-pair or EIA/TIA-568 compliant,
100-ohm shielded twisted-pair data cable with 0.4
to 0.6 mm (22 to 26 AWG) wires in two or four
twisted pairs (only two pairs--that is, four
wires--are used for 10BASE-T).
Maximum segment length: 100 meters
Connectors: RJ-45
Straight Twisted-Pair Cable Pinouts
Contact MDI-X Signal MDI-II Signal
1RD+ (receive) TD+ (transmit)
2RD-(receive) TD-(transmit)
3TD+ (transmit) RD+ (receive)
4Not used Not used
5Not used Not used
6TD-(transmit) RD-(receive)
7Not used Not used
8Not used Not used

11
Crossover Cables
When making an uplink connection between one hub and
another (or between a hub and a switch or bridge) usingX-type
jacks at both ends, you must use a crossover cable. In a
crossover cable, two pairs of wires are switched at one end.
Carry out the following steps to create a crossover twisted-pair
cable:
1. Leave one end of the cable as-is, with the wiring on the
RJ-45 connector unchanged. The wiring needs to be
modified at one end only.
2. At the other end of the cable, connect wires 1 and 2 to
contacts 3 and 6, respectively. Likewise, connect wires
3 and 6 to contacts 1 and 2. Refer to the following
diagram:

12

10
Specifications
General
Standards: IEEE 802.3 10BASE-TEthernet repeater, and
ANSI X3T9.5 twisted-pair transceiver
Topology: Star
Protocol: CSMA/CD
Network Data Transfer Rate: Ethernet: 10Mbps
Number of Ports: , 4 x STP + 1 x BNC, 5 x STP, , 8 x STP, 8
x STP + 1 x BNC,
Network Media:Category 3 or better UTP cable, maximum
length 100 meters.
Environmental and Physical
Power Adapter: 5, 8, 9 port: Output 7.5VDC/1A
Dimensions:
Operating Temperature: 0 to 40°C
Storage Temperature: –20 to 70°C
Humidity: 5% to 90% (non-condensing)
Emissions: FCC Class A, CE Mark Class A, VCCI