CHAPTER 3.
Error! Use the Home tab to apply
제목
1,
장
제목
1 to the text that you want to appear here.
3-10
© SAMSUNG Electronics Co., Ltd.
Table 3.15 Electrical Characteristics of the WIM Interface (RS-232C Interface)
Category
Specification
Maximum transmission speed
230 Kbits/s
Transmission code
V.28 driver
Number of transmission lines
14
Characteristic resistance
3 K
-7 K
Indicated (pulse) nominal peak voltage
±15 V
Input threshold
+1.2-1.7 V
The electrical characteristics of the RS-449 (V.11) interface are shown in the table below:
Table 3.16 Electrical Characteristics of the WIM Interface (RS-499 Interface)
Category
Specification
Maximum transmission speed
10 Mbits/s
Transmission code
V.11 driver
Number of transmission lines
24
Characteristic resistance
100
Indicated (pulse) nominal peak voltage
±10 V
Input threshold
±0.3 V
3.2.1.3 Signaling Type of the LAN
The electrical characteristics of the 10 BASE-T, which complies with the IEEE802.3
standard, are shown in the table below:
Table 3.17 Electrical Characteristics of the LAN Interface (10 BASE-T)
Category
Specification
Transmission speed
10 Mbits/s ±50 ppm
Transmission code
Manchester coding
-
When the transmission data bit is ‘0’, the higher level of
the middle bit is inversed into the lower level. When the
transmission data bit is ‘1’, the lower level of the middle
bit is inversed into the higher level.
Access control method
Carrier Sense Multiple Access/Collision Detect
(CSMA/CD)
Transmission media
UTP (Unshielded Twisted Pair) CAT3, CAT4, CAT5,
STP (Shielded Twisted Pair)
Number of the UTP pairs
2 pairs
Characteristic resistance
100
Cable thickness
Diameter: 0.51 mm (24 AWG), External diameter: 5 mm
