Philips Digital TV antenna SDV6122T SDV6122T/27 用户手册

9

English

F

FM (Frequency Modulation)

In radio broadcasting: a method of modulation 

in which the frequency of the carrier voltage 

is varied with the frequency of the modulation 

voltage.

H

HDTV (High-Definition Television)

It is a digital television broadcasting system 

with higher resolution than traditional 

television systems (standard-definition TV, 

or SDTV). HDTV is digitally broadcast; 

the earliest implementations used analog 

broadcasting, but today digital television 

(DTV) signals are used, requiring less 

bandwidth due to digital video compression.

U

UHF (Ultra high frequency)

In radio or TV broadcasting: it is the frequency 

range of electromagnetic waves which lies 

between 300 MHz and 3 GHz (3000 MHz). 

V

VHF (Very high frequency)

In radio or TV broadcasting: it is the frequency 

range of electromagnetic waves which lies 

between 30 MHz and 300 MHz. 

7  Glossary

A

Amplifier

A device, either a single stage or a large scale 

circuit with multiple stages for creating gain, 

i.e. it makes small signals larger.
Antenna

A device, such as a rod or wire, which picks up 

a received radio frequency signal or radiates a 

transmitted RF signal.
ATSC (Advanced Television Systems 

Committee)

The Advanced Television Systems Committee, 

Inc., is an international, non-profit organization 

developing voluntary standards for digital 

television. The high definition television 

standards defined by the ATSC produce wide 

screen 16:9 images up to 1920x1080 pixels 

in size -- more than six times the display 

resolution of the earlier standard. However, 

many different image sizes are also supported, 

so that up to six standard-definition “virtual 

channels” can be broadcast on a single 6 MHz 

TV channel.

C

Coaxial

A single copper conductor, surrounded with 

a layer of insulation, covered by a surrounding 

copper shield and finally, an insulating jacket. 

An unbalanced transmission line with constant 

impedance. In audio, this type is commonly 

used for low level, line signals terminated in 

RCA connectors.

EN