Chapter Overview

This chapter introduces you to the subject of TV technology. It embodies almost all the principles and circuits covered elsewhere in this book. Studying TV is an excellent review of communication fundamentals, including modulation and multiplexing, transmitters and receivers, antennas and transmission lines, and even digital techniques.

This chapter covers the basic NTSC system and TV receiver. The NTSC is the National Television Standards Committee, the group that developed the standards for analog TV and color TV in the 1950s. It also covers cable TV, satellite TV, and the new digital and high-definition TV systems as defined by the Advanced Television Standards Committee (ATSC).

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Chapter Outline

23-1 - TV Signal
23-2 - TV Receiver
23-3 - Cable TV
23-4 - Satellite TV
23-5 - Digital TV

Chapter Objectives

• Describe and give specifications for a complete TV signal including all its individual components.
• Explain the process used by a TV camera to convert a visual scene to a video signal.
• Draw a simplified block diagram, showing main components, of a TV transmitter, a TV receiver and the signal flow.
• Draw a block diagram of a cable TV system.
• Name all the elements of and explain the operation of a cable TV system.
• Explain the operation of a DBS TV receiver.
• Define digital TV (DTV) and high-definition TV (HDTV), and state the basic specifications of HDTV receivers.