Справочник Пользователя для Triax DVB 63S
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T E C H N I C A L T E R M S
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.
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.
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.
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.
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.
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.
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)
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)
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
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
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.
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.
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.
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.
For universal LNB to switch to high fre-
quency range.