GB82

User’s Manual
10. Appendix
10.7 Glossary
• DiSEqC (Digital Satellite Equipment Control)
A DiSEqC compatible receiver relies on a switching box which detects the 22kHz tone pulsing rapidly
on and o . In this way, a specially designed receiver can control numerous LNBs through a DiSEqC
switching box.
• Dolby Digital
An encoding system that digitally compresses up to 5.1 discrete channels of audio (left front, centre,
right front, left surround, right surround) into a single Bitstream. A low frequency e ect (LFE) channel
is included providing the sound needed for special e ects.
• EPG (Electronic Programme Guide)
An electronic equivalent to a printed television listings magazine; it is an application used with
digital set-top boxes and digital television sets to list current and scheduled programs that are or
will be available on each channel, including a short summary or commentary for each program. The
information supplied in the EPG is sent and updated by the channel broadcaster.
• FEC (Forward Error Correction)
A technique for error control of data transmission.
• Frequency
The property of a signal measured in cycles per second (=Hz).
• FTA (Free- To-Air)
An unscrambled broadcaster allowing customers to view channels or services without paying any
subscription.
• Hi-Fi (High Fidelity)
The characteristics of audio devices that can play back all the audio frequencies a person can detect,
which is the range of 16Hz~20KHz. Sometimes it is used to indicate good quality of audio devices such
as stereo tape recorders.
• LNB (Low Noise Block)
A device that is mounted on an arm facing your satellite dish, focusing on satellite signals. A LNB
converts signals received from satellite to a lower frequency and sends them to a satellite receiver via
coaxial cable.
• OSD (On Screen Display)
OSD displays the basic information necessary for the users to con gure monitor or TV settings. OSD
information may include brightness, contrast, tuning, RGB adjustment, and screen size and position.
• OTA (Over the Air)
A standard for the transmission of software for equipment, through a broadcast system. Manufacturers
reserve the right for deciding the release of the software for their products.
• Polarization
The direction of the electrical and magnetic  elds of a signal. Satellites use both vertical and horizontal
polarisation. Means that a frequency can be used twice.