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3.2.6 1000BASE-LX/1000BASE-LH Single-mode Optical Fiber Cable
(Core Diameter: 10 μm, SC Twin-Core Connector)
This is used for the connection with 1000BASE-LX (GBIC-LX) and 1000BASE-LH (GBIC-LH).
The boundary with 1000BASE-LX/1000BASE-LH is the connector on GS4000.
The maximum transmission distance between the devices with 1000BASE-LX when using an
optic fiber which core/clad diameter is 10/125μm (wave length: 1300nm) is 5 km.
Likely, the maximum transmission distance between the devices with 1000BASE-LH when
using an optic fiber which core/clad diameter is 10/125μm (wave length: 1550nm) is 70 km.
Figure 3.2-6 shows the rough sketch of the cable, and Table 3.2-10 and Table 3.2-11 show the
specifications of optic fiber interfaces.
SC Twin-Core Connector
Figure 3.2-6
Table 3.2-10 Specification of 1000BASE-LX
Item
Emission peak wavelength
Optical output level (average)
Optical input level (average)
Transmission loss
Table 3.2-11 Specification of 1000BASE-LH
Item
Emission peak wavelength
Optical output level (average)
Optical input level (average)
Transmission loss
：
(Note 1)
Use an optical attenuator to adjust the transmission loss when it is 2.0dB or less.
520-10-026-30X
Rough Sketch of 1000BASE-LX/1000BASE-LH Single-Mode Optical Fiber
Cable (Core Diameter: 10 μm)
GS4000 Installation Guide Revision 4.00
SC Twin-Core Connector
Specification
1.285 ～ 1.340 μm
-9.5 ～ -3.0 dBm
-20.0 ～ -3.0 dBm
10.5 dB
Specification
1.550±0.050 μm
-4.0 ～ ＋1.0 dBm
-25.5 ～ -1.0 dBm
21.5 dB（Note 1）
3-9
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