Humax HD-FOX User Manual - Page 84

12. Appendix 12. Polarisation The direction of the electrical and magnetic fields of a signal. Satellites use both vertical and horizontal polarisation. Means that a frequency can be used twice. 13. PID (Packet Identifier) A set of numbers identifying stream packets contained within a single data stream. 14. QPSK (Quaternary Phase Shift Keying) Digital modulation technique in which the carrier phase can have one of four possible values. 15. RF (Radio Frequency) Television signals are modulated onto RF signals and are then demodulated by your television's or STB's tuner. 16. RF Modulator Enables you to output the receiver's digital signals to a TVs RF (Aerial) input, allowing you to connect the receiver to a TV set without a SCART connection. 17. SCART A 21-pin connector standard to connect two pieces of Audio-Visual equipment such as a TV and a VCR. Each device will have a 21-pin female connection; a cable with male connection at both ends is used for connecting the devices. 18. Smartcard A credit card sized card that contains updateable chip memory. It is used for accessing Pay TV (encrypted) channel or services when inserted into an appropriate receiver. 19. S/PDIF (Sony/Philips Digital Interface format) A standard format for the transfer of digital audio signals. It allows the transfer of digital audio between two devices without any conversion to and from analogue, which could degrade the signal quality. 20. S-Video (Super-Video) Sometimes referred to as Y/C video; a technology for transmitting video signals via a cable. It is a video signal transmission in which the luminance (brightness) and the chrominance (colour) signals are transmitted separately to achieve superior picture clarity. 21. Transponder A satellite is divided up in parts called transponders. A transponder is one distribution section of the satellite. Each transponder can be used for distribution of several channels or services. GB83 User's Manual