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In DVB-S it permits to choose between 1/2, 2/3, 3/4, 5/6 and 7/8. In DVB-S2 it
permits to choose one of the following values: 1/4, 1/3, 2/5, 1/2, 3/5, 2/3, 3/4, 4/5,
5/6, 8/9 y 9/10.
4)
Symbol Rate
It is possible to choose over the following values: from 1000 to 45000 kbauds.
When selecting the option appears the current value, in order to modify it enter a
new value through keyboard when appears the data enter symbol appears on the
upper left corner screen.
When altering this parameter modifies automatically the value of the Channel
Bandwidth and vice versa, due to the relation that exists between these two
parameters.
10
FREQ:
DL-Ku:
CH:
MPEG-2
Figure 21.- Screen of mesurement configuration (QPSK signals).
5)
Modulations (Only in DVB-S2)
Modulation used by carriers. It defines also the system noise immunity (QPSK
and 8PSK).
6)
Polarization
It affects to the signal reception in the SAT band (satellite). It allows to select the
the signal polarisation among Vertical/Right (vertical and circular clockwise) and
Horizontal/ Left (horizontal and circular counterclockwise) or, to deactivate the
polarization (
).
OFF
7)
Sat Band
Selects the High or Low frequency band for satellite channel tuning.
8)
LNB Low Osc.
Sets the LNB low band local oscillator.
9)
LNB High Osc.
Sets the LNB high band local oscillator.
Page 44
USER'S MANUAL. US TV EXPLORER II
CONFIGURATION
» CHANNEL SET:
ASTRA-VL
» SIGNAL:
DVB-S
» SYSTEM:
30
50
70
90
110
» FRAME RATE:
1781.94
MHz
C/N:
» CHANNEL BW:
29.70 MHz
5037
kHz
» POWER:
51.5
» SPECTRAL INV:
12382.0
MHz
MER:
10.9
» CODE RATE:
99
CBER:
22000kSymb
» SYMBOL RATE:
VBER:
» POLARIZATION:
VERT/RIGHT
PAL
130
50Hz
0.2
dB
dBµV
OFF
dB
5/6
9.7E-4
5.2E-8
10/2007
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