Cabling
25
Figure 3 shows where to locate pin 1.
Figure 3: Pin 1 Orientation on
an RJ45 Connector
10BASE2 RG58/BNC Cabling
In addition to an RJ45 connector, the AT-1720BT has a BNC
connector for 10BASE2 standard thin Ethernet RG58 coaxial
cable. The maximum segment length is 185 meters (606 ft.), and
the minimum length between nodes is 0.5 meters (1.64 ft.). The
coaxial cable should be connected to the adapter card via a
T-connector and must be terminated with a 50
Ω
BNC
terminator at each end of the network segment. See Figure 4.
The connection must not be made as in Figure 5.
Figure 4: BNC Receptacle for
10BASE2 (Shown Terminated)
Pin 1