Specifications

CHAPTER 3. Specifications of the OfficeServ 7200
3-12 © SAMSUNG Electronics Co., Ltd.
The electrical characteristics of the 1000 BASE-TX, which complies with the IEEE802.3ab
standard, are shown in the table below
Table 3.19 Electrical Characteristics of the LAN Interface (1000 BASE-TX)
Category Specification
Transmission speed 1000 Mbits/s
Transmission code 8B1Q4 (the 8 bit transmission data is processed using additional
scramble/error detection bits, converted into 9 bit transmission code,
mapped into 5 levels/4 amplitude modulated transmission signals
using the mapping table, randomized into each pair of actual
transmission signals, then transmitted)
Access control type CSMA/CD
Transmission media UTP CAT5 (Up to 100 m)
Number of UTP pairs 4 pairs
Characteristic resistance 100 W
Cable thickness Diameter: 0.51 mm (24 AWG), External diameter: 6 mm
Transmission speed 1000 Mbits/s
Transmission code 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.
Access control type CSMA/CD
Transmission media - SX: Multi-Mode Optical Fiber (MMF)
- LX: Multi-Mode Optical Fiber/Single-Mode Optical Fiber (SMF)
Number of Optical Fiber 2 Pairs
Max Transmission Length - SX: Up to 550 m
- LX: Up to 5 km
Cable thickness Diameter: 0.51 mm (24 AWG), External diameter: 6 mm
Table 3.20 Electrical Characteristics of 1000 BASE-Sx/LX Fiber Optic
Transmission Distance (m)
Fiber Type
Mode Band
(Short Wave/Long
Wave MHz.Km)
1000BASE-SX 1000BASE-LX
160/500 220 550 62.5uM MMF
200/500 275 550
400/400 500 550 50uM MMF
500/500 550 550