TechniSat DIGITY 1 - Manual (Page 31)

7.6 System configuration
You can access specific equipment data under this menu item.
>
Use the arrow up/down keys to mark this line in the sub-menu Settings..
> Confirm by pressing
OK.
> Press the Menu key to return to normal operation.
8 Technical Terms
Antenna cable:
Connecting cable between the modulator of the satellite receiver and the antenna input
socket of the TV set; used as an alternative if no SCART socket is available
AV: see SCART
Coaxial cable:
Cable connecting the LNB to the satellite receiver, used to carry the signals received as well
as to provide power to the LNB.
Data compression/MPEG1/MPEG2:
In order to transmit the current TV standard (625 lines and an image repeating frequency of
50 Hz), one arrives at a digital data volume of 216 MBit/s. This would require enormous
bandwidths not available either with terrestrial nor with satellite broadcast technology. A data
compression system is thus employed to reduce the amount of data transmitted. In Europe,
MPEG-2 has been defined as the worldwide standard for data compression. MPEG-2 is an
expansion of the original MPEG-1 standard.
External unit:
Term used for the complete system installed out of doors, consisting of the parabolic/offest
dish antenna as well as one or more LNBs, used to receive signals from one or more satelli-
tes.
Deemphasis:
Adjustment of the audio frequency band to the broadcast signal, this is determined by the
broadcast parameters of the satellite
DiSEqC:
Digital Satellite Equipment Control: a digital switching signal used to control DiSEqC-compa-
tible components of the external unit via the antenna cable.
DVB:
Digital Video Broadcasting: a universal digital broadcast standard used for images, graphics,
sound and text, i.e. for data in any form, and in any quality, appropriate to the type of data.
Frequency:
Physical dimension, indicates the waves or oscillations per second, the unit of measurement
is Hertz (Hz)
Frequency range:
a) Satellite resp. LNB:
11 GHz range from 10,70 GHz to 11,70 GHz, 12 GHz range from 11,70 GHz to 12,75 GHz
b) Receiver: Intermediate frequency or 1.IF 950 to 2150 MHz
Unit of frequency
Term Oscillations p. second
1 Hz 1 Hertz 1
1 kHz 1 Kilohertz 1.000
1 MHz 1 Megahertz 1.000.000
1 GHz 1 Gigahertz 1.000.000.000
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