Installation guide

Appendix B
Ethernet Specifications
Parameter 10Base2 10Base5
10BaseT
Cable Thin Thick
UTP
Impedance
50 ohms 50 ohms
100 ohms
Connector
on cable
BNC DB-15
RJ-45
Data transfer rate 10 Mbps 10 Mbps 10 Mbps
Topology
Bus Bus/Star Star
Segment
length
185 meters
500 meters 100 meters
(maximum)
Distance between nodes
0.5 meter
1 meter
nla
(minimum)
Nodes
per segment
30 500
nla
(maximum)
A few tips
10BaseT Ethernet
The wiring normally called for in lOBaseT is 26 to 22 AWG, which cor-
responds to the wire gauge of telephone unshielded twisted-pair
cables. You need two pairs of wiring for each node.
• When wiring 10BaseT connections, take precautions against
splitting pairs. Be sure you maintain the same color mates for
each pair used within the cable. If you don't follow a com-
mon color pairing, you can mix up the wires preventing the
Ethernet signal from being transmitted.
Be sure to check any cabling you plan to use. Older cabling
may not be of adequate quality to support 100 meters
between a device and the hub.
B-1