Hitachi GR4000 Series Installation Manual page 108

GR4000 Installation Guide Version 1.00 - Preliminary
(7) 1000BASE-LH Single-mode (DSF) Optical Fiber Cord
(Core diameter: 8μm，SC twin-core connector）
This is used for the connection with 1000BASE-LH（GBIC-LH）.
The boundary with 1000BASE-LH is the connector on GR4000.
The maximum transmission distance between the devices with 1000BASE-LH when
using an optic fiber which core/clad diameter is 8／125μm （wave length: 1500nm）is
70Km.
Figure 3.2-7 shows the rough sketch of the cable, and Table 3.2-12 shows the
specification of an optic fiber interface.
SC twin-core connector
Figure 3.2-7 Rough Sketch of 1000BASE-LH Single-mode Optical Fiber Cord（core
Table 3.2-12 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 under 2.0dB .
90
diameter: 8µm）
SC twin-core connector
Specification
1.550±0.050 µm
-4.0 ～ ＋1.0 dBm
-25.5 ～ -1.0 dBm
21.5 dB（Note 1）
520-10-014-20X