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LevelOne EHU-0507T User Manual

EHU-0807T EHU-0507TB EHU-0907TB

Made by: LevelOne
Type: User Guide
Category: Switch
Pages: 18
Size: 0.17 MB

 

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LevelOne 

 
 
 

 
 

EHU-0507T 

EHU-0507TB 

EHU-0807T 

EHU-0907TB

 

5/8/9 Port PalmCon 10M HUB 

 

 

User’s Guide 

 

 


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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. 

 

 

 

 


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Table of Contents 

INTRODUCTION

............................................................................ 1 

P

RODUCT 

F

EATURES

.....................................................................1 

T

HE 

F

RONT 

P

ANEL OF 

P

ALM 

S

IZE 

HUB

S

...................................2 

T

HE 

R

EAR 

P

ANEL OF 

P

ALM 

S

IZE 

HUB

S

.....................................3 

LED I

NDICATORS

..........................................................................4 

R

EAR 

P

ANEL 

I

NDICATORS

.............................................................4 

Twisted-pair Jacks.................................................................. 4 
Uplink Jack.............................................................................. 5 
Power Jack .............................................................................. 5 

INSTALLATION

.............................................................................. 6 

I

NSTALLING THE 

H

UB

...................................................................6 

C

ONNECTING THE 

P

OWER 

A

DAPTER

........................................10 

C

ABLES AND 

C

ONNECTORS

........................................................10 

C

ROSSOVER 

C

ABLES

...................................................................11 

SPECIFICATIONS

.......................................................................10 

G

ENERAL

......................................................................................10 

E

NVIRONMENTAL AND 

P

HYSICAL

.............................................10 

 
 
 
 

 
 

P/N: 6012-0161110 Rev.01

 


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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 

ü 

Compliance to IEEE 802.3 10BASE-T/2 standard.

 

ü 

Automatic paritioning function of each port to isolate 
network failure.

 

ü 

Ethernet connections support Category 3 or better 
twisted-pair cable.

 

ü 

LED indicators for each twisted pair port for link and 
receive reporting diangnosis.

 

ü 

Uplink jack for easy linking of two hubs to further expand 
the network.

 

ü 

Compact design in palm size.

 

ü 

The hub’s housing made by Plastic materil.

 

 


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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 

 

 

 

 


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The Rear Panel of PalmCon Hubs 

 

 

EHU-0507T 

 

EHU-0507TB 

 

 

EHU-0807T 

 

EHU-0907TB 

 


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LED Indicators 

Power 

(PWR):

 

This indicator lights green 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 detected, 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, 

 


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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. 

 

 


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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. 
 

 
 
 
 
 
 
 
                          

 


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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 

RD+ (receive) 

TD+ (transmit) 

RD- (receive) 

TD- (transmit) 

TD+ (transmit) 

RD+ (receive) 

Not used 

Not used 

Not used 

Not used 

TD- (transmit) 

RD- (receive) 

Not used 

Not used 

Not used 

Not used 

 


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11 

 

 

 

 

 

Crossover Cables 

When making an uplink connection between one hub and 
another (or between a hub and a switch or bridge) using 

X

-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: 

 


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12 

 

 

 

 

 

 


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10 

Specifications 

General 

Standards: 

IEEE 802.3 10BASE-T Ethernet 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

°

Storage Temperature:

  –20 to 70

°

Humidity:

  5% to 90% (non-condensing) 

Emissions:

  FCC Class A, CE Mark Class A, VCCI