10Base2 Rg58/Bnc Connection - Allied Telesis AT-2450 Installation Manual

AT-2450 PCI Ethernet Adapter Card
Figure 4 shows the orientation of pin 1 on the RJ45 connector.
Figure 4: Pin 1 Orientation on an
Pin 1
RJ45 Connector

10BASE2 RG58/BNC Connection

In addition to an RJ45 connector, the AT-2450BT PCI Ethernet
Adapter Card 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 terminator at each end of the network segment. (As the
default, Allied Telesyn 10BASE2 hubs offer 50 Ω termination
internally.) For correct termination of the AT-2450BT at the end
of a segment, see Figure 5. The connection must not be made as
in Figure 6.
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