SMART MX56 Manual page 5

Polarization
Satellite waves are polarized. They can be linear or circular. Linear polarity is
Vertical or Horizontal, circular polarity is Righ-hand and Left-hand circular polarity.
Quaternary Phase Shift Keying (QPSK)
Phase-shift keying in which four different phase angles are used.
RF
A frequency that is useful for radio transmission, usually between10kHz and
300,000Mhz
RGB
Video information in the form of Red, Green, and Blue tristimulus values. The
combination of three values representing the intensity of each of the three colors
can represent the entire range of visible light.
STB
Set Top Box, another common name of Digital Satellite Receiver, because it
usually be put on top of TV in household. This word is used now worldwide.
Symbol Rate
The amount of data transmitted every second.
Transponder (TP)
Equipment in a satellite which receives a single uplink channel from a satellite
Earth station, amplifies it, converts the frequency and changes the polarization,
then rebroadcasts it back to Earth.
Transport Stream
The bit stream formed prior to transmission of signals by combining the video,
audio and data streams of one service. It consists of fixed length packets of 188
bytes of data.
USALS
Universal Satellite Automatically Location System, a system established by STAB
www.usals.info
Front Panel
: Press to switch between Operation and Standby modes.
: Changes channels or items from top to bottom on the menus.
: Increase or Decrease the volume of sound.
: Press to display MENU.
: Press to proceed confirmation.
Dimension:260mm x 195mm x 48mm (W x D x H )
Rear Panel
ANT IN: Connect to TerrestrialAntenna
ANT OUT: Use it when connecting to another STB.
RS-232: Use it when connecting to your PC.
TV/VCR SCART:For the video/audio input of the TV and VCR.
DIGITALAUDIO: SPDIF audio format output system.
POWER: Power on/off switch.
A/V RCA: To connect theAudio/Vedio RCA output to TV