Technical Terms

Aerial cable:

Connecting cable between the modula- tor of the satellite receiver and the aerial input of the tv, as an alternative if there is no SCART-socket.

AV: see SCART

Coaxial cable:

Connecting cable between LNB and satellite receiver, for the transmission of signals received and power supply of the LNB.

Data compression/MPEG1/MPEG2 For the transmission of the present tv- standard (625 lines and 50 Hz image replication frequency) there is a digital data quantity of 216 Mbit/s. This would require band widths which are not avail- able, neither terrestrially nor for satel- lites. Therefore a reduction of the data quantity is made through data reduc- tion. In Europe MPEG-2 has been de- termined as a universal standard of data compression. MPEG2 is an exten- sion of MPEG1.

Deemphasis:

Adaptation of the audio frequencies to the transmitter signal, determined by the transmission parameters of the sat- ellite.

DiSEqC

Digital Satellite Equipment Control: A digitalt control signal for the control of the DiSEqC-compatible components of the ODU via the coaxial cable.

DVB

Digital Video Broadcastning: a digital, universal transmission technique for picture, graphics, sound and text. Also for all kinds of data and in any possible and suitable quality.

Frequency:

Physical quantity, states number of os- cillations per second, measured in Hertz (Hz).

Frequency range:

a)Satellite and LNB, respectively: 11 GHz range from 10,70 GHz to 11,70 GHz

12 GHz range from 11,70 to 12,75 GHz

b)Receiver: IF or 1.MF 950 to 2150

MHz

Frequency unit / Description / Oscilla- tions per second

1 Hz		1	Hertz	1
1 kHz		1	Kilohertz	1.000 Hz
1	MHz	1	Megahertz 1.000.000 Hz
1	GHz	1	Gigahertz	1.000.000.000 Hz

Intermediate Frequency (IF):

The frequency range radiated from the satellite cannot be transmitted through a cable and is therefore converted by the LNB in the IF range from 950 to 2150 MHz. In this way transmission and processing in the receiver is made pos- sible.

1. IF = Intermediate frequency.

LNB/LNC (Low Noise Blockconverter): Receiver unit in the focal point of the dish, converts the frequency range of the satellite to the IF of the receiver.

LOF:

Local oscillator frequency, statement in MHz or GHz, depending on LNB and frequency range received.

Reception frequency of the receiver = the transmitter frenquency of the satel- lite - LOF.

Modulation with 22 KHz

For universal LNB to switch to high fre- quency range.