Dvb-C (Qam) Signal - Promax US TV EXPLORER II Manual De Uso

USER'S MANUAL. US TV EXPLORER
The transmission quality is visualized in a qualitative way using a colour range for
the symbol density concentrated in a certain area. This colour coding goes from
black (no symbols) to red (maximum density), and runs from blue to yelllow in
ascending order.
A greater dispersion of the symbols indicates greater level of noise or worse signal
quality.
If concentration of symbols or noise appears is indicative of good carrier/noise ratio
or absence of problems as phase noise, etc.,.

5.15.2 DVB-C (QAM) signal

Sets on the UTILITIES menu by pressing the
CONSTELLATION option.
On screen appears the modulation type: DVB-C (256 QAM). Also the frequency
and channel number are indicated. Finally, it shows the type of DVB-C broadcast
network used.
Figure 47.- Constellation diagram. DVB-C (QAM 256) signal.
11/2013
II
NOTE
[22] key, and select the
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