Maximum S-6002 CI HD, Руководство пользователя

Страница: 22 / 43

- 22 -
* Solar Interference
Several times each year the sun may pass directly behind the satellite. For the few minutes when the
satellite is directly between the sun and your dish, the satellite's signal will be overwhelmed by solar
radiation from the sun. Satellite programming will be temporarily disrupted during this brief period.
Once the sun passes on, satellite reception will return to normal.
APPENDIX 2 Glossary
* Aspect Ratio:
It is the ratio of the width of the screen to the height. The two relevant digital TV formats are 16:9
(wide screen) or 4:3 (the traditional screen ratio). 16:9 is ergonomically more suitable for human's eye.
* Coaxial Cable:
A type of cable used to transmit high frequency signals e.g. from the antenna to the Standard
Definition receiver.
* Composite Video:
There are three elements of the video system: First - the "active video" which means the picture to be
displayed on the screen and its associated colors. Second - the ”sync" decides where to place each
pixel on the screen. Third - the "blanking" tells the display when to turn off the electron beam so no
retrace across the screen. These three elements combined together is called "composite video" when
connecting to a display through connectors.
* DVB:
Abbreviation for "Digital Video Broadcasting". An international organization created in October 1993,
whose primary objective is to achieve a common framework for all technical platforms of digital
broadcasting systems including DVB-C (cable), DVB-S (satellite), DVB-T (terrestrial), DVB-MC
(MMDS), DVB- CS (SMATV)
.
* EPG:
Abbreviation for "Electronic Program Guide". Software that enable viewers to navigate through the
large number of channels offered by digital TV broadcaster and select the desired services.
* Frequency:
The property of a signal which is measured in cycles per second (=Hertz).
* Letterbox :
The picture with aspect ratio 16:9 in a 4:3 TV screen with blank lines on top and bottom. It is the
means to watch a wide screen TV program on a 4:3 TV screen.
* Megahertz (MHz):
Millions of cycles per second, which describes frequencies of radio wave or electric current.
* OSD
:
Abbreviation of "On Screen Display", used in digital set top box. OSD is comprised of a main menu
and many submenus with lots of options of functions inside.
* PAL:
Stands for "Phase Alternating Line", the European video standard which has the image format of 4 by
3, 625 horizontal lines, 50 Hz and a total 8 MHz of video channel width.
*
Y/Pb/Pr:
Component Video. It is better than S-Video and Composite Video in terms of picture quality.