TurboStack Hubs with Management
39
Note
References in this manual to SMA and SM are interchangeable, both being
acronyms for Sub Miniature Assembly.
Fiber Optic (10BASE-FL) Wiring Specifications
The IEEE 10BASE-FL standard limits a fiber segment length to 2 km
(6,560 ft.). Note, however, that this only applies to topologies in which one
10BASE-FL node connects to another 10BASE-FL node. You can intermix
10BASE-FL and FOIRL nodes, but if the cable connects a 10BASE-FL
node at one end and a FOIRL node at the other, the limitation would
revert to the lesser distance of 1 km (3,280 ft.).
AT-TS12F/ST, SC, and SM hubs support 62.5/125 micron and 50/125
micron duplex optical fiber cable (
duplex
refers to fiber optic cable pairs).
Normally, duplex fiber optic cable is labeled TX or TD (transmit) and RX or
RD (receive). This means it has a dedicated transmit cable and a dedicated
receive cable. You must connect the receiving port (RX or RD) on one
device to the transmitting (TX or TD) port on a second device for proper
connectivity.
To connect a network device to one of the fiber optic ports on the
AT-TS12F/ST, SC, SM models:
1.
Attach both connectors at one end of the cable to the TX and RX ports
on the network device.
2.
Connect one of the paired connectors at the other end of the cable to the
RX port on the repeater.
3.
Check for On Line indicator to illuminate. If it does, connect the other
of the pair to TX. If On Line stays off, unplug the connector from RX
and use the other of the pair.
Figure 36: AT-TS12F/SM
Faceplate
12 SM
connectors
Port activity LEDs
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