Table of Contents
Advertisement
Table 2-1. DB-9 STP Connector Pin Assignments
Pin No.
Function
1
Transmit (+)
2
Not used
3
Not used
4
Not used
5
Receive (+)
6
Transmit (–)
7
Not used
8
Not used
9
Receive (–)
Unshielded Twisted-Pair Cable
The standard UTP cabling type supported by the LinkBuilder FDDI
Workgroup Hub is category 5 screened UTP cross-over cable with
screened RJ-45 connectors, as specified by ANSI X3T9.5. The cross-over
cable connections and color scheme are shown in Figure 2-7.
The maximum length of this cable from the hub to any potential end station
is 100 m (328 ft). The cross-over cable connects the LinkBuilder FDDI
hub and the punchdown block. ANSI standards specify the operating
distances, as shown in Figure 2-8.
The pin assignments for the type RJ-45 FDDI unshielded twisted-pair
interface connector are shown in Table 2-2.
Brown
1
Green
2
Blue
3
Orange
4
Figure 2-7. Cross-over Connections on a UTP Cable
Installing the Hub
2-21
5
Orange
6
Blue
7
Green
8
Brown
Advertisement
Table of Contents
