Humax IR-ACE User Manual - Page 4

Copyright & Glossary Copyright • VIACCESSTM is a trademark of France Telecom. • CryptoWorks(TM) is a trademark of Philips Electronics N.V. • Irdeto is a trademark of Mindport BV. • Nagravision is a registered trademark of Kudelski S.A. • Conax is a trademark of Telenor Conax AS. Warning • HUMAX cannot be held responsible for any problems caused by the use of unofficial software. The use of software versions other than HUMAX official software will void the manufacturer's warranty. It is advised that only HUMAX formal software be used in all HUMAX product ranges. Glossary • Antenna A device that collects and radiates electromagnetic waves. This includes a satellite dish and a broadband antenna. • Forward Error Correction (FEC) An error control system for data transmission. • Frequency The number of cycles or events per second, expressed in of Hertz(Hz) units. • Intermediate Frequency (IF) A frequency to which a carrier frequency is shifted as an intermediate step in transmission or reception. • Low Noise Block (LNB) Downconverter A low noise microwave amplifier and converter which downconverts a range of frequencies to the IF range. • Packet Identifier (PID) A set of numbers that identifies transport stream packets containing data from a single data stream. • Polarisation Characteristic of an electromagnetic wave determined by the orientation of the electric field vector. • Quaternary Phase Shift Keying (QPSK) Phase-shift keying in which four different phase angles are used. • Service A channel into which a decoder or TV is tuned. • Transponder An automatic device that receives, amplifies and retransmits a signal on a different frequency. GB3