Table 3.20 Electrical Characteristics Of 1000 Base-Sx/Lx Fiber Optic - Samsung OfficeServ 7200 System Description

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Table 3.19 Electrical Characteristics of the LAN Interface (1000 BASE-TX) (Continued)
Category
Transmission code
Access control type
Transmission media
Number of Optical Fiber
Max Transmission Length
Cable thickness

Table 3.20 Electrical Characteristics of 1000 BASE-Sx/LX Fiber Optic

Fiber Type
62.5uM MMF
50uM MMF
Mode Band
The mode band in the previous table represents the quality of the multi-mode
optical fiber relative to the transmission speed. The unit is generally represented
in MHz.Km, the optical signal's bit rate (the flickering rate of the optical signal)
multiplied by the maximum transmission distance. The higher value means farther
transmission of higher optical signal with higher bit rate. When using the short-
wave laser and the long-wave laser, a mode band is also specified for each type.
Categories of UTP Cable
UTP Cables are classified into Straight-through UTP cable and Crossover UTP
cable. The Straight-through UTP cable is used for connecting the LIM or PLIM
module of OfficeServ 7200 to other modules (MP20, MGI16, WIM).
The Crossover UTP cable is used for connecting only LIM (PLIM) module to LIM
(PLIM) module.
3-12
8B/10B Data Encoding
Processes the 8 bit data received through the upper-layer MAC sub-
layer as one nibble, converts each nibble into 10 bit code through the
physical layer, and transmits the code.
The transmission speed is 1250 Mbps after changing from 8-bit to
10-bit code.
CSMA/CD
- SX: Multi-Mode Optical Fiber (MMF)
- LX: Multi-Mode Optical Fiber/Single-Mode Optical Fiber (SMF)
2 Pairs
- SX: Up to 550 m
- LX: Up to 5 km
Diameter: 0.51 mm (24 AWG), External diameter: 6 mm
Mode Band
(Short Wave/Long Wave
MHz.Km)
160/500
200/500
400/400
500/500
Specification
Transmission Distance (m)
1000BASE-SX
220
275
500
550
© SAMSUNG Electronics Co., Ltd.
1000BASE-LX
550
550
550
550