Hitachi GR4000-160E1, Руководство по установке

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GS4000 Installation Guide Revision 4.00
520-10-026-30X
3-7
3.2.4 1000BASE-SX/1000BASE-LX Multi-mode Optical Fiber Cable
(Core Diameter: 50 μ m, SC Twin-Core Connector)
This is used for the connection with 1000BASE-SX
（
GBIC-SX
）
and 1000BASE-LX (GBIC-LX).
The boundary with 1000BASE-SX/1000BASE-LX is the connector on GS4000.
The maximum transmission distance between the devices with 1000BASE-SX when using an
optic fiber which core/clad diameter is 50/125
μ
m and bandwidth is 400MHz
・
km (wave
length: 850nm) is 500m.
Likely, the maximum transmission distance between the devices with 1000BASE-LX when
using an optic fiber which core/clad diameter is 50/125
μ
m and bandwidth is 500MHz
・
km
(wave length: 1300nm) is 550m.
Figure 3.2-4 shows the rough sketch of the cable, and Table 3.2-6 and Table 3.2-7 show the
specifications of optic fiber interfaces.
Figure 3.2-4 Rough Sketch of 1000BASE-SX/1000BASE-LX Multi-Mode Optical Fiber
Cable (Core Diameter: 50 μ m
)
Table 3.2-6 Specification of 1000BASE-SX
Item Specification
Emission peak wavelength
0.830
～
0.860 μ m
Optical output level (average)
-
9.5
～ -
4.0 dBm
Optical input level (average)
- 17.0 ～ 0 dBm
Transmission loss 8.5 dB
Table 3.2-7 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
SC Twin-Core Connector SC Twin-Core Connector