GS4000 Installation Guide Revision 4.00
520-10-026-30X
3-9
3.2.6 1000BASE-LX/1000BASE-LH Single-mode Optical Fiber Cable
(Core Diameter: 10
μ
m, 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 10/125
μ
m (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 10/125
μ
m (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.
Figure 3.2-6 Rough Sketch of 1000BASE-LX/1000BASE-LH Single-Mode Optical Fiber
Cable (Core Diameter: 10
μ
m
)
Table 3.2-10 Specification of 1000BASE-LX
Item
Specification
Emission peak wavelength
1.285
~
1.340
μ
m
Optical output level (average)
-
9.5
~
-
3.0 dBm
Optical input level (average)
-
20.0
~
-
3.0 dBm
Transmission loss
10.5 dB
Table 3.2-11 Specification of 1000BASE-LH
Item
Specification
Emission peak wavelength
1.550
±
0.050
μ
m
Optical output level (average)
-
4.0
~
+
1.0 dBm
Optical input level (average)
-
25.5
~
-
1.0 dBm
Transmission loss
21.5 dB
(
Note 1
)
(Note 1)
:
Use an optical attenuator to adjust the transmission loss when it is 2.0dB or less.
SC Twin-Core Connector
SC Twin-Core Connector