Instruction manual

3. Preparation of Interface Cables and Terminals
73
Physical specifications RJ45
Pin number
10BASE-T 100BASE-TX 1000BASE-T
3 Send (+) (B) Send (+) (B)
Send/receive (+)
(B)
4 Not used
#1
(C) Not used
#1
(C) Send/receive C (+) (C)
5 Not used
#1
(c) Not used
#1
(c) Send/receive C (-) (c)
6 Send (-) (b) Send (-) (b)
Send/receive (-)
(b)
7 Not used
#1
(D) Not used
#1
(D) Send/receive D (+) (D)
8 Not used
#1
(d) Not used
#1
(d) Send/receive D (-) (d)
#1: Connect to the pin if you are using a 4-pair, 8-core cable.
#2: Twisted pair line. Use (A) and (a), (B) and (b), (C) and (c), (D) and (d) in pairs for
a 4-pair, 8-core cable. Use (A) and (a) and (B) and (b) in pairs for a 2-pair, 4-core
cable.
3.2.2 Fiber optic cables (1000BASE-X)
For details about the fiber optic cables used for 1000BASE-SX, 1000BASE-SX2,
1000BASE-LX, 1000BASE-LH, 1000BASE-LHB, and 1000BASE-BX, see the
following tables.
Table 3-4 Physical specifications for 1000BASE-SX
Item Physical specifications
Cable type Multi-mode
Core/cladding diameter
50 μm/125 μm 62.5 μm/125 μm
Transmission band
400
MHz×km
500
MHz×km
160 MHz×km 200 MHz×km
Center emission
wavelength
0.770 to 0.860 μm
Optical transmission
power (mean)
-9.5 to 0 dBm
Optical reception power
(mean)
-17.0 to 0 dBm
Optical transmission
loss (max)
7.5 dB
Transmission distance 2 to 500 m 2 to 550 m 2 to 220 m 2 to 275 m
Table 3-5 Physical specifications for 1000BASE-SX2
Item Physical specifications
Cable type Multi-mode
Core/cladding diameter
50 μm/125 μm 62.5 μm/125 μm
Transmission band
500 MHz×km 500 MHz×km
Center emission
wavelength
1.270 to 1.355 μm
Optical transmission
power (mean)
-9.0 to -3.0 dBm
Optical reception power
(mean)
-19.0 to -3.0 dBm