Hitachi GR4000 Series, Руководство по установке

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GR4000 Installation Guide Version 1.00 - Preliminary
520-10-014-20X
85
(2) 1000BASE-SX/1000BASE-LX Multi-mode Optical Fiber Cord
(
Core diameter: 62.5µm
，
LC twin- core connector
)
This is used for the connection with 1000BASE-SX
（
SFP-SX
）
and 1000BASE-LX
（
SFP-
LX
）
.
The boundary with 1000BASE-SX/1000BASE-LX is the connector on GR4000.
The maximum transmission distance between the devices with 1000BASE-SX when
using an optic fiber which core/clad diameter is 62.5
／
125
μ
m and bandwidth is
200MHz
･
km
（
wave length: 850nm
）
is 275m.
Likely, the maximum transmission distance between the devices with 1000BASE-LX
when using an optic fiber which core/clad diameter is 62.5
／
125
μ
m and bandwidth is
500MHz
･
km (wave length: 1300nm) is 550m.
Figure 3.2-2 shows the rough sketch of the cable, and Table 3.2-3 and Table 3.2-4 show
the specifications of optic fiber interfaces.
Figure 3.2-2 Rough Sketch of 1000BASE-SX/1000BASE-LX Multi-mode Optical Fiber Cord
(Core Diameter: 62.5 µm)
Table 3.2-3 Specification of 1000BASE-SX
Item Specification
Emission peak wavelength
0.830 ～ 0.860 µm
Optical output level (average)
- 9.5 ～ - 4.0 dBm
Optical input level (average)
- 17.0 ～ 0 dBm
Transmission loss 8.5 dB
Table 3.2-4 Specification of 1000BASE-LX
Item Specification
Emission peak wavelength
1.285
～
1.340 µm
Optical output level (average)
-
9.5
～ -
3.0 dBm
Optical input level (average)
-
20.0
～ -
3.0 dBm
Transmission loss 10.5 dB
LC twin-core connector LC twin-core connector