Measurements Configuration; Dvb-C (Qam) Digital Channel Configuration - Promax TV EXPLORER HD ISDB-T/T B Manual De Instrucciones

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NOTE In the case that is desired to explore or identify QAM-A signals will be
necessary to select previously QAM-A standard as digital signal
identifier by means of
5.13

Measurements configuration

With the aim of taking the measurements of all types of signals some times could
be necessary that user enters parameters relative to particular characteristics of these
signals, whether an automatic detection has not been possible, or these parameters
differ from the standard corresponding ones.

5.13.1 DVB-C (QAM) Digital Channel Configuration

Press the Measurements Configuration
CONFIGURATION menu and turn the rotary selector
Select the signal DVB-C, which uses QAM modulation. Parameters related to QAM
modulation are described below:
1) Channel BW (channel bandwidth)
Enables the channel bandwidth to be selected. 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
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
256.
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[1] to choose one of the following modulations: 16, 32, 64, 128 and
USER'S MANUAL TV EXPLORER
[22] PREFERENCES menu.
[17] key to access to the
HD ISDB-T/T
[1] until the SIGNAL option.
[1] is possible to
B
10/2012