Instruction manual

3. Preparation of Interface Cables and Terminals
80
Item Physical specifications
Optical reception power
(mean)
-19.0 to -3.0 dBm
Optical transmission
loss (max)
10.0 dB
Transmission distance 2 m to 2 km 2 m to 1 km
#1
#1: The transmission distance can be increased by using the mode conditioning
patch code. However, the maximum distance for transmission is 2 km, and that
distance depends on transmission loss. For 2 km transmission, the transmission
loss must be no more than 10 dB.
Table 3-6 Physical specifications for 1000BASE-LX
Item Physical specifications
Cable type Multi-mode
#1
Single-mode
Core/cladding diameter
50 μm/125 μm 62.5 μm/125
μm
10 μm/125 μm
Transmission band
400 MHz x
km
500 MHz x
km
500 MHz x
km
--
Center emission
wavelength
1.270 to 1.355 μm
Optical transmission
power (mean)
-11.5 to -3.0 dBm -11.0 to -3.0 dBm
Optical reception power
(mean)
-19.0 to -3.0 dBm
Optical transmission
loss (max)
7.5 dB 8.0 dB
Transmission distance 2 to 550 m 2 m to 5 km
#1: Some kinds of multimode fiber optic might increase the BER (bit error rate)
when used with 1000BASE-LX. In this case, proper communication can be
established by using the mode-conditioning patch code.
Table 3-7 Physical specifications for 1000BASE-LH
Item Physical specifications
Cable type Single-mode Single-mode (DSF)
Core/cladding diameter
10 μm/125 μm 8 μm/125 μm
Center emission
wavelength
1.540 to 1.570 μm
Optical transmission power
(mean)
0 to +5.0 dBm
Optical reception power
(mean)
-22.0 to 0 dBm
Optical transmission loss
(max)
22.0 dB
#1
Transmission distance 2 m to 70 km
#1: When optical transmission loss is 5.0 dB or less, use an optical attenuator to
adjust the loss.