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Ch 07-090721210426-phpapp01

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  • 1. Chapter 7 Transmission Media McGraw-Hill ©The McGraw-Hill Companies, Inc., 2004
  • 2. Figure 7.1 McGraw-Hill Transmission medium and physical layer ©The McGraw-Hill Companies, Inc., 2004
  • 3. Figure 7.2 McGraw-Hill Classes of transmission media ©The McGraw-Hill Companies, Inc., 2004
  • 4. 7.1 Guided Media Twisted-Pair Cable Coaxial Cable Fiber-Optic Cable McGraw-Hill ©The McGraw-Hill Companies, Inc., 2004
  • 5. Figure 7.3 McGraw-Hill Twisted-pair cable ©The McGraw-Hill Companies, Inc., 2004
  • 6. Figure 7.4 McGraw-Hill UTP and STP ©The McGraw-Hill Companies, Inc., 2004
  • 7. Table 7.1 Categories of unshielded twisted-pair cables Category Bandwidth Data Rate Digital/Analog Use 1 very low < 100 kbps Analog Telephone 2 < 2 MHz 2 Mbps Analog/digital T-1 lines 3 16 MHz 10 Mbps Digital LANs 4 20 MHz 20 Mbps Digital LANs 5 100 MHz 100 Mbps Digital LANs 6 (draft) 200 MHz 200 Mbps Digital LANs 7 (draft) 600 MHz 600 Mbps Digital LANs McGraw-Hill ©The McGraw-Hill Companies, Inc., 2004
  • 8. Figure 7.5 McGraw-Hill UTP connector ©The McGraw-Hill Companies, Inc., 2004
  • 9. Figure 7.6 McGraw-Hill UTP performance ©The McGraw-Hill Companies, Inc., 2004
  • 10. Figure 7.7 McGraw-Hill Coaxial cable ©The McGraw-Hill Companies, Inc., 2004
  • 11. Table 7.2 Categories of coaxial cables Category Use RG-59 75 Ω Cable TV RG-58 50 Ω Thin Ethernet RG-11 McGraw-Hill Impedance 50 Ω Thick Ethernet ©The McGraw-Hill Companies, Inc., 2004
  • 12. Figure 7.8 McGraw-Hill BNC connectors ©The McGraw-Hill Companies, Inc., 2004
  • 13. Figure 7.9 McGraw-Hill Coaxial cable performance ©The McGraw-Hill Companies, Inc., 2004
  • 14. Figure 7.10 McGraw-Hill Bending of light ray ©The McGraw-Hill Companies, Inc., 2004
  • 15. Figure 7.11 McGraw-Hill Optical fiber ©The McGraw-Hill Companies, Inc., 2004
  • 16. Figure 7.12 McGraw-Hill Propagation modes ©The McGraw-Hill Companies, Inc., 2004
  • 17. Figure 7.13 McGraw-Hill Modes ©The McGraw-Hill Companies, Inc., 2004
  • 18. Table 7.3 Fiber types Type Core Cladding Mode 50/125 50 125 Multimode, graded-index 62.5/125 62.5 125 Multimode, graded-index 100/125 100 125 Multimode, graded-index 7 125 Single-mode 7/125 McGraw-Hill ©The McGraw-Hill Companies, Inc., 2004
  • 19. Figure 7.14 McGraw-Hill Fiber construction ©The McGraw-Hill Companies, Inc., 2004
  • 20. Figure 7.15 McGraw-Hill Fiber-optic cable connectors ©The McGraw-Hill Companies, Inc., 2004
  • 21. Figure 7.16 McGraw-Hill Optical fiber performance ©The McGraw-Hill Companies, Inc., 2004
  • 22. 7.2 Unguided Media: Wireless Radio Waves Microwaves Infrared McGraw-Hill ©The McGraw-Hill Companies, Inc., 2004
  • 23. Figure 7.17 McGraw-Hill Electromagnetic spectrum for wireless communication ©The McGraw-Hill Companies, Inc., 2004
  • 24. Figure 7.18 McGraw-Hill Propagation methods ©The McGraw-Hill Companies, Inc., 2004
  • 25. Table 7.4 Bands Band Range Propagation Application VLF 3–30 KHz Ground Long-range radio navigation LF 30–300 KHz Ground Radio beacons and navigational locators MF 300 KHz–3 MHz Sky AM radio HF 3–30 MHz Sky Citizens band (CB), ship/aircraft communication VHF 30–300 MHz Sky and line-of-sight VHF TV, FM radio UHF 300 MHz–3 GHz Line-of-sight UHF TV, cellular phones, paging, satellite SHF 3–30 GHz Line-of-sight Satellite communication EHF 30–300 GHz Line-of-sight Long-range radio navigation McGraw-Hill ©The McGraw-Hill Companies, Inc., 2004
  • 26. Figure 7.19 McGraw-Hill Wireless transmission waves ©The McGraw-Hill Companies, Inc., 2004
  • 27. Figure 7.20 McGraw-Hill Omnidirectional antennas ©The McGraw-Hill Companies, Inc., 2004
  • 28. Note: Radio waves are used for multicast communications, such as radio and television, and paging systems. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2004
  • 29. Figure 7.21 McGraw-Hill Unidirectional antennas ©The McGraw-Hill Companies, Inc., 2004
  • 30. Note: Microwaves are used for unicast communication such as cellular telephones, satellite networks, and wireless LANs. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2004
  • 31. Note: Infrared signals can be used for shortrange communication in a closed area using line-of-sight propagation. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2004