Tài liệu Chapter 7 Transmission Media ppt

... twisted-pair cables 7. 5 Figure 7. 3 Twisted-pair cable 7. 24 Figure 7. 18 Propagation methods 7. 6 Figure 7. 4 UTP and STP cables 7. 17 Figure 7. 13 Modes 7. 1 Chapter 7 Transmission Media Copyright © ... 7. 13 Figure 7. 9 Coaxial cable performance 7. 27 Figure 7. 20 Omnidirectional antenna 7. 19 Figure 7. 14 Fiber construction 7. 12 Figure 7. 8 BNC connectors 7....

Ngày tải lên: 16/02/2014, 20:20

... area networks (LAN) ❙ 10Mbps or 100Mbps Optical Fiber Transmission Modes Optical Fiber Wireless Transmission ❚ Unguided media ❚ Transmission and reception via antenna ❚ Directional ❙ Focused ... concerns are data rate and distance William Stallings Data and Computer Communications Chapter 4 Transmission Media Unshielded and Shielded TP ❚ Unshielded Twisted Pair (UTP)...

Ngày tải lên: 16/02/2014, 08:20

... Architecture: An Overview 7 2 Business Information Warehouse Terminology 7 8 Business Information Warehouse Reporting Environment 7 9 Review 7 12 7 In this chapter you will learn:  ... Report Development Tools 7 1 Chapter 7: Overview of Reporting in the Business Information Warehouse Contents What Is the Business Information Warehouse? 7 2 Business Information...

Ngày tải lên: 11/12/2013, 14:15

... 4623 E. Kuntz, Ger. Offen. 273 3516, 1 978 , to Rhone-Poulenc Industries E. G. Kuntz, Abstr. ISHC -7 , Lyon, 1990 , P- 47 Y. Tokitoh, N. Yoshimura, M. Tamura, Proc. SHHC -7 , Tokyo, 1992 , P90 10 . N. ... derivatives (Scheme 7. 16) not only increased the activity over all previous values but largely improved the stability of the catalysts, as well [ 57] . 254 Chapter 7 11. 12. 13....

Ngày tải lên: 23/12/2013, 07:19

... frame by that number  If no remainder, assume no error  For math, see Stallings chapter 7 Model of Frame Transmission Examples of Operation (1) HDLC Link Configurations  Unbalanced  One ... goes back to frame i and retransmits William Stallings Data and Computer Communications Chapter 7 Data Link Control Cyclic Redundancy Check  For a block of k bits transmitter g...

Ngày tải lên: 16/02/2014, 08:20

... utilization of the bandwidth speed (2.94Mbps) • In 1 977 they were issued the patent on CSMA/CD (Carrier-Sense Multiple Access with Collision Detection) Transmission and Protocol Theory 4 Protocol History • ... the communications channel having the same characteristics impedance. Transmission and Protocol Theory 27 • For 100Base-TX transmission three voltage levels are used to cre...

Ngày tải lên: 09/12/2013, 16:15

... 网支持广播传输.如 136 .78 .255.255 就是 B 类地址中的一个广播地址,你将信息送到此地址,就是将信息送给网络 号为 136 .78 的所有主机.有时需要在本网内广播,但又不知道本网的网络号时 ,TCP/IP 协议规 定 32 比特全为 1 的 IP 地址用于本网广播,即 255.255.255.255 Private IP Address Chapter2 Internet ... 一些特殊的 IP 地址: 1.IP 地址 1 27. 0.0.1:本地回环(loopback)测试地址 2.广播地址:255.255.255.255 3...

Ngày tải lên: 09/12/2013, 17:15

... constant, and apply the formulas of the electric field inside paralell-plates capacitor). 2/20/2008 7 2.2 Capacitors and capacitance:  A capacitor is a device whose purpose is to store electrical ... ρ of conductivity σ and of resistance R Ohm’s law (τ: average time between collisions) 2/20/2008 17 3.2 Energy storage in capacitors: Where is the Energy Stored? • Energy is stored in the ele...

Ngày tải lên: 10/12/2013, 12:15

... l=1 Increase B  the splitting is wider   cos . B BU   is called the Bohr magneton. 0  Chapter XXII Chapter XXII Atom Atom ic ic Structure Structure §1. Hydrogen atom §2. Angular momentum of ... direction with the field : )., ,1,0,1, ,(, 2 0 llmBmB m e mBU e Z    TeslaJ m e e /10 274 1.9 2 24 0     Due to the interaction between the electron’s magnetic moment and t...

Ngày tải lên: 10/12/2013, 12:15

... bps. modems.mm,v v4.10 (2003/04/02 03:11:02) 3 27 Chapter 19: Serial communications 2April 2003, 17: 00: 47 The Complete FreeBSD (modems.mm), page 3 27 • Before the character starts, the line is idle, ... on pins 17 and 19. For more details about RS-232, see RS-232 Made easy by Martin Seyer. modems.mm,v v4.10 (2003/04/02 03:11:02) 3 37 Chapter 19: Serial communications 2April 2003, 1...

Ngày tải lên: 11/12/2013, 00:15