User manual

User Manual 36
5-3. Connecting 100Base-TX Fast Ethernet Network
The system board provides an RJ-45 port for connection to 100Base-TX Fast
Ethernet or 10Base-T Ethernet Network with a single connection over
unshielded twisted-pair (UTP). The adapter automatically operates at 10Mbps
or 100Mbps when the appropriate 10/100Base hub is connected.
To connect the adapter to 100Base-TX Fast Ethernet Network, you need a
twisted-pair Category 5 cable with RJ-45 modular jacks at both ends. This cable
can have a maximum length of 300 feet (100 meters).
5-4. Connecting 10Base-T Ethernet Network
To connect the adapter to a 10Base-T Ethernet Network, you need a
twisted-pair Category 3, 4 or 5 cables with RJ-45 modular jacks at both ends.
This cable can have a maximum length of 300 feet (100 meters).
5-5. 10MBase/100MBase Installation Notice
 100Mbps network must be shielded twisted-pair (STP) or Category 5
unshielded twisted-pair cable. Do not use a Category 3 or 4 cable for
100Mbps-network operation, it could cause data loss. Category 3 or 4
cable is good for 10Mbps network only.
 Category 5 cable is also good for 10Mbps operation. Use UTP Category 5
cable for the versatility to operate the network at either 100Mbps or
10Mbps speed without changing cable.
 Two pairs of wiring are required.
 Depending on building codes, different insulation materials may be
required. Plenum-rated or TEFLON-coated wiring maybe required in
some areas where fireproofing is required.
 The wire gauge should be between 18 and 26 AWG (Most telephone
installations use 24-gauge wiring).
 UTP cable should meet the following requirements:
1. Solid copper
2. Nominal capacitance: less than 16pF/ft
3. Nominal impedance: 100 ohms
4. Nominal attenuation: less than 11.5db