Specifications

5
5
Installation
1. Operating Environment
ED-1508/ED-1508X/ED-1508S/ED-1508SX must be installed and operated within
the limits of specified operating temperature and humidity (see previous section
under Specifications). Do not place objects on top of the unit. Do not obstruct any
vents at the sides of the unit. Do not position the hub near any heating source such as
heater, radiator, or direct exposure to sun. Prevent entering of water and moisture
into the unit. If necessary, use dehumidifier to reduce humidity.
2. Connecting to network devices
Connect one end of the network cable to any of the eight RJ45 ports on the front
panel, and connect the other end of the network cable to the RJ45 port of the network
device. The network cables must comply with EIA/TIA 568 specifications and
Category 5 standard for 100Mbps data rate or minimum Category 3 for 10Mbps data
rate. Maximum length between the hub and any network devices is 100 meters
(300ft). Once the network cable is connected on both ends and the attached network
devices are powered on, the green Link Status LED should be lit. If the connected
network devices are running at 100Mbps, the green Speed LED (100M) should also
be lit.
3. Uplink to Another Hub
Use the Uplink port (8th port) to connect to another hub as illustrated below.
Connecting cable must comply with EIA/TIA 568 specifications and Category 5
(100Mbps) standards to connect the hubs. The Uplink port of the Dual-Speed hub
supports Auto-Sensing function which will automatically sense the speed of the
connected hub and operates at either 100Mbps or 10Mbps speed. If the connected
hub is another Dual-Speed hub or 100Base-TX hub, the transmission speed between
the two hubs will be set at 100Mbps and the green Speed (100M) LED should be lit.
The maximum length of the cable should not exceed 5 meters (15ft) when
connecting two hubs running at 100Mbps and 100 meters (300ft) when connecting
two hubs running at 10Mbps.
8
Figure 5-1 Connect the hub and network device
Dual Speed Hub
10/100 FAST ETHERNET CARD
FCC ID :
RTL8139
100m
Category 5
EIA/TIA 568
UTP Cable
Network
Adapter
54321 6 7 8
UPLINK
L
A
N
P
R
O
F E S
S
I
O
N
100M
LNK/ACT
PWR
10
1 2 3 4 5 7 86
100
DIMAX
COL
8-port 10/100Mbps ED-1508
Dual Speed Hub