Sun Microsystems Ultra Enterprise 3000, Installation Manual

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2-6 Ultra Enterprise 3000 System Installation Guide—May 1996
2
Figure 2-5 Connecting Twisted Pair Ethernet to N-type Coaxial Cable
Table 2-1 lists the cabling limitations for Ethernet.
1. Finite lengths (as constrained by transmission line phenomena). Minimum length = 23.4M; maximum = 500M.
If cable falls shorter than one of these values, add cable to achieve next-highest value.
2. Transceivers are placed at intervals of 2.5 meters, or multiples of 2.5 meters along the Ethernet cable.
Example: transceivers are connected 2.5 meters apart, not 2.0 meters.
Example: transceivers are connected 15 meters apart (6 multiples of 2.5 meters), not 14.0 meters.
Table 2-1 Ethernet Cabling Limitations for N-type Coaxial Cable
Cable Segment Length in Meters
Allowed contiguous length of cable segments 23.4
70.2
117.0
500.0
1
Distance between transceivers (multiples-of) 2.5
2
Minimum length of Ethernet coaxial cable segments 23.4
Maximum length of transceiver “drop” cable 50.0
Minimum length of twisted pair cable no minimum
Maximum length of twisted pair cable 110
Transceiver
Vampire tap or N-type connectors
Ethernet cable
Transceiver drop cable
(coaxial or optical fiber)
Hardware interface
10/100BASE-T
twisted-pair cable
Server