Installation manual

OfficeServ 7400 System Description
© SAMSUNG Electronics Co., Ltd. 3-9
y The electrical characteristics of the 1000 BASE-TX, which comply with the
IEEE802.3ab standards, are shown in the table below:
Table 3.15 Electrical Characteristics of LAN Interface (1000 BASE-TX)
Categories Specifications
Transmission speed 1000 Mbits/s
Transmission code 8B1Q4
The 8-bit transmission data are converted into 9-bit transmission
signals via the additional treatment of scramble, error detection bit,
and then are mapped into the transmission signals of 4 teams with 5
levels, and are randomized into each pair of transmission signal to
be transmitted.
Access control method CSMA/CD
Transmission media UTP CAT5 (Maximum transmission distance 100 m)
Number of UTP pair 4 pairs
Characteristic resistance 100 Ω
Cable thickness Diameter 0.51 mm (24 AWG), External diameter 6 mm
y The electrical characteristics of 1000 BASE-SX/LX, which comply with the
IEEE802.3z standards, are shown in the table below:
Table 3.16 Electrical Characteristics of LAN Interface (1000 BASE-FX)
Categories Specifications
Transmission speed 1000 Mbits/s
Transmission code 8B/10B Data Encoding
The 8-bit (8B) data entered from the upper layer of MAC Part are
handled in one nibble to be converted into the signals of 10-bit (10B)
at the physical layer. And then each nibble of the converted data are
transmitted. The transmission speed after the conversion into
8B/10B is 1250 Mbps.
Access control method CSMA/CD
Transmission media SX: Multimode Optical Fiber (MMF)
LX: Multimode Optical Fiber/Single mode Optical Fiber (SMF)
Number of Optical Fibers 2 pairs
Maximum transmission
distance
SX: Maximum 550 m
LX: Maximum 5 km
Cable thickness Diameter 0.51 mm (24 AWG), External diameter 6 mm