18 | Glossary |
Term | Explanation |
Access Control | Allows user to set a password to control access to programmes |
| based on channel, rating (based on the motion picture rating |
| system) or content. |
Conditional Access | A system for restricting access to a particular service to |
| authorised users only (e.g. subscribers to a particular digital |
| bouquet, purchasers of individual |
| means of encryption and authorised decoding. |
Conditional Access Module | Decrypting and descrambling module that acts as card reader for |
(CA Module) | Smart Cards. |
DiSEqC switch | The DiSEqC switch enables the user to select one LNB signal |
| between different LNBs. You can control up to 16 LNBs in total. |
DVB – Digital Video Broadcasting | Broadcast standard for digital radio and television, using MPEG II |
| compression. |
Digital Video Broadcasting: A coherent set of European | |
Broadcasting- Satellite | standards for transmission and reception of digital television |
| signals. Although European, the standards have been adopted in |
many countries worldwide. There are many standards within the | |
Broadcasting- Terrestrial | DVB family, including specifications for satellite |
| |
Frequency | Physical quantity, indicates the number of cycles per second, |
| measured in Hertz (Hz). |
LNB (Low Noise Block down- | Converts microwave frequency blocks to the intermediate |
Converter) | frequency range covered by the tuner. |
Polarity | For better utilisation of the available frequency bands, the |
| satellites transmit adjacent programmes, with opposite polarity |
| (horizontal and vertical). Reception of both horizontal and |
| vertical polarity is covered by the universal LNB. |
Programme Guide or Electronic | This interactive feature allows the user to access and scroll |
Program Guide (EPG) | through complete programme listings covering now and next |
| programmes on the television screen. |