Chapter 23 Television and Video Display Units 407
from outside radio interference. The shield of the coaxial
cable is grounded in most applications.
FAKRA SMB connector
A FAKRA SMB connector is a very small connector
especially designed for small diameter coaxial cable
known as micro-coaxial cable. Micro-coaxial cable is
used for automotive satellite radio and antenna connec-
tions. It is the smallest connector used at this time.
Review Questions for Section 23.3
1. A(n) __________ pattern is left on a recording tape.
2. A remote control sends a(n) __________
__________ to the TV.
3. How is an image projected onto a large-screen TV?
4. Why is the resolution limited for a typical large-
screen TV?
5. Who first proposed the concept of communication
satellites?
6. How does a receiving dish work?
7. Which part of a coaxial cable is normally grounded?
23.4 HIGH DEFINITION
TELEVISION (HDTV)
The analog television display system had remained
the same for over fifty years without any major improve-
ments to the quality of the transmitted image. This condi-
tion may have continued if not for the development of the
computer monitor. The computer monitor had a greater
image resolution than the analog television. By merging
the analog television system with the digital system,
many features that were not possible with the traditional
analog system could be added. When converting to the
digital system, there was greater ability to manipulate
screen images. For example, since there is greater color-
depth control in a digital system, images could be easily
reapportioned as the image horizontal-to-vertical ratio
changed between digital and analog television reception.
18"
Metal mesh
dish
Solid metal dish Fiberglass dish Digital satellite
system
Figure 23-31. Common dish designs.
Figure 23-32. A satellite receiver. (Regency Electronics)
F-type
connector
Mesh
shield
Foil shield
Dielectric
Copper core conductor
Figure 23-33. A coaxial cable consists of two shields: a
mesh or braid and foil. At the top is an F-type connector
commonly used with coaxial cables.