1000Base-Lx/1000Base-Lh Multi-Mode Optical Fiber Cable (Core Diameter 10 Mm); Figure 3-19. 1000Base-Lx/1000Base-Lh Multi-Mode Optical Fiber Cord (Core Diameter: 10 Mm); Table 3-12 Specifications For 1000Base-Lx Interface; Table 3-13 Specifications For 1000Base-Lh Interface - Hitachi GR2000-B Series Installation Manual

3.2.14 1000BASE-LX/1000BASE-LH Multi-Mode Optical Fiber Cable
(Core Diameter 10 µm)
This interface cable is used for an 1000BASE-LX (GBICB-LX) and 1000BASE-LH
(GBICB-LH) connection. The boundary with the network is the router's connector.
The maximum transmission distance between devices using a 1000BASE-SX
connection is 5 km if you are using an optical fiber cable which has the following
specifications:
Core/Clad: 10/125 µm (wavelength: 850 nm)
The maximum transmission distance between devices using a 1000BASE-LH
connection is 550 m if you are using an optical fiber cable which has the following
specifications:
Core/Clad: 10/125 µm (wavelength: 1550 nm)
Figure 3-19 below shows the diagram of the 1000BASE-LX/1000BASE-LH
multi-mode optical fiber cable.
Figure 3-19 1000BASE-LX/1000BASE-LH Multi-mode Optical Fiber Cord

Table 3-12 Specifications for 1000BASE-LX Interface

Item
Luminescence center wave length
Optical output level (average)
Optical input level (average)
Extinction ratio

Table 3-13 Specifications for 1000BASE-LH Interface

Item
Luminescence center wave length
Optical output level (average)
Optical input level (average)
Extinction ratio
Note: If the extinction ratio is 2.0 dB or less, adjust it by using an optical attenuator.
GR2K-GA-0007
Rev. 5.00
(Core Diameter: 10 µm)
Preparing Interface Cables and the Terminal
Specification
1.285 ~ 1.340 µm
-9.5 ~ -3.0 dBm
-20.0 ~ 3.0 dBm
11.5 dB or less
Specification
1.550 ± 0.050 µm
-4.0 ~ +1.0 dBm
-25.5 ~ -1.0 dBm
21.5 dB (Note)
3-17