Dvb-C (Qam) Digital Channel Configuration - Promax TV EXPLORER II Manual De Instrucciones

USER'S MANUAL. TV EXPLORER II/II+
Press the Measurements Configuration
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

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) Channel BW (channel bandwidth)
Enables the channel bandwidth to be selected up to 9.2 MHz. The selection of this
parameter is essential for the correct operation of the tuner, as it affects the
frequency separation of the carriers. If you change the bandwidth the Symbol Rate
changes proportionally and vice versa.
2) Spectral inversion
If necessary, activate the Spectral inversion (On). If the spectral inversion is not
correctly selected, reception will not be correct.
3) Symbol Rate
When selecting this function and pressing the rotary selector [1] is possible to
choose the symbol rate. If you change the bandwidth the Symbol Rate changes
proportionally and vice versa.
4) Modulation
It defines the modulation type. When selecting this function and turn the rotary
selector [1] to choose one of the following modulations: 16, 32, 64, 128 and 256.
10 30
FREQ:
CH:
MPEG-2 TS
Figure 19.- Screen of mesurement configuration (QAM signals).
12/2013
CONFIGURATION
» CHANNEL SET:
» SIGNAL:
» SYSTEM:
50 70 90
» FRAME RATE:
650.00 MHz C/N:
» CHANNEL BW:
-3 kHz » POWER:
» SPECTRAL INV:
43 MER:
» SYMBOL RATE: 6875kSymb
BER:
» MODULATIONS:
EXIT
[17] key to access to the
[17] key to access to the
CCIR
DVB-C
PAL
110 130
50Hz
16.5 dB
8.00MHz
66.2 dBµV
OFF
24.7 dB
3.4 E-4
64QAM
Page 41