Sun Microsystems SunSwift SPARCserver 1000, Installation Manual

Page: 35 / 70

Setting Up the System 2-5
2
Figure 2-5 Connecting Twisted Pair Ethernet to N-type Coaxial Cable
Figure 2-6 shows an example of a typical network setup. The
SPARCserver 1000 system can be any server shown in this figure.
If termination is required, install a 50-ohm terminator in the unused
transceiver N connector or the end of the coaxial cable. Use a female double
N-type connector.
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
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.
Distance between transceivers (multiples-of) 2.5
2
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.
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 drop cable
Transceiver
Vampire tap or
N-type connectors
Multiplex panel (or a single
port interface box) SPARCserver
1000
Twisted pair cable
Ethernet cable Ethernet cable
Additional transceiver
Ethernet cable