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USER’S MANUAL. PRODIG-5
Press the Measurements Configuration
[17] key to access to the
CONFIGURATION menu and turn the rotary selector [1] to access to parameters which
are modifiable by the user.
5.13.1 DVB-C (QAM) Digital Channel Configuration
[17] key to access to the
Press the Measurements Configuration
CONFIGURATION menu and turn the rotary selector [1] to access the QAM signals
parameters which can be defined by user and are described below:
1)
Modulation
It defines the modulation type. When selecting this function and pressing the
rotary selector [1] a multiple-choice menu will appear on the screen, this menu
permits to choose one of the following modulations: 16, 32, 64, 128 and 256.
2)
Symbol Rate
When selecting this function and pressing the rotary selector [1] a multiple-choice
menu will appear on the screen, this menu permits to choose the symbol rate.
3)
Spectral inversion
If necessary, activate the Spectral inversion (On). If the spectral inversion is not
correctly selected, reception will not be correct.
CONFIGURATION
» SAVE AS:
» CHANNEL SET:
» SIGNAL:
CCIR_01
CCIR
DVB-C
PAL
» SYSTEM:
20
40
60
80
100
120
50Hz
» FRAME RATE:
16.5 dB
FREQ:
650.00 MHz
C/N:
8.00MHz
» CHANNEL BW:
66.2 dBuV
-3 kHz
POWER:
OFF dB
» SPECTRAL43
INV:MER:
24.7
CH:
6875kSymb
» SYMBOL RATE: BER:
3.4E-4
0
» MODULATIONS:
64QAM
MPEG-2
Figure 18.- Screen of mesurement configuration (QAM signals).
Page 40
11/2006