C
ABLES

B-2

Note: If you need to connect to a device with 62.5/125 micron cable that
has ST-type connectors, SMC provides an optional SC-ST
Converter (Part Number: 99-012034-091).
Twisted-Pair Cable and Pin Assignments
Caution: DO NOT plug a phone jack connector into any RJ-45 port.
Use only twisted-pair cables with RJ-45 connectors that
conform with FCC standards.
For 100BASE-TX/10BASE-T connections, a twisted-pair cable must have
two pairs of wires. Each wire pair is identified by two different colors. For
example, one wire might be green and the other, green with white stripes.
Also, an RJ-45 connector must be attached to both ends of the cable.
Caution: Each wire pair must be attached to the RJ-45 connectors in a
specific orientation. (See “Cabling Guidelines” on page 4-1 for
an explanation.)
Figure B-1 illustrates how the pins on the RJ-45 connector are numbered.
Be sure to hold the connectors in the same orientatio n when attaching the
wires to the pins.
Maximum Fiber Optic Cable Distance for 1000BASE-LX
Fiber Size Fiber Bandwidth Maximum Cable Length
9/125 micron N/A 2 m - 10 km (7 - 32808 ft)
Maximum 1000BASE-ZX Fiber Optic Cable Distance
Fiber Diameter Fiber Bandwidth Cable Length Range
9/125 micron single-mode
fiber (SMF)
N/A 70* - 100 km (43.5 - 62.1 miles)
* For link spans exceeding 70 km, you may need to use premium single mode fiber
or dispersion shifted single mode fiber.