Operations Manual

EXI HALO Installation & Operation Manual 981-000003-000
EXI Wireless Systems 29 March 2000
Revision 2.0
6. PC Networked Installation
(Must have a dedicated Ethernet)
10BASE-T CABLING:
• Maximum allowable distance per segment is 100 meters.
• Supports 10Mb/s transmission rate.
• Uses a Star Topology.
• Unshielded Twisted Pair Category 5 cable recommended.
• Two Computers (10 Base T NICs) may be directly attached to each other without a repeating hub,
provided the distance between the two computers is less than 100 meters. In this case a special
“Crossover Cable” is required that attaches transmit pair of one station to the receive pair of the other
station, and vice versa. When using a hub the cross over function is performed inside the repeating
hub.
NOTE: It is recommended to use a hub to connect two Computers.
• ADVANTAGES: a) Star Wiring topology supports easier maintenance & troubleshooting.
Provides a modular approach to network construction.
b) Inexpensive cabling & easy to install.
c) Ethernet packets are routed more effectively & efficiently than the
traditional Bus design.
• DISADVANTAGES: 10Base2 supports longer segment lengths.
• 5-4-3 RULE: With 10Base-T wired networks, a maximum of 5 wiring segments is allowed between
any connected computers within the LAN and only 3 of the segments can be populated with consoles
or server.
• Therefore the maximum distance between two computers is 500 meters.
• 10Base-T cable is susceptible to EMI. Try to keep cables away from Elevator motors, florescent
lighting fixtures, uninterruptible power supplies, & other sources of EMI. Coiling up cables can also
cause interference.