Dvb-S/S2 (Qpsk/8Psk) Signal - Promax TV EXPLORER HD ISDB-T/T B Manual De Instrucciones

The transmission quality is visualised in a qualitative way using a colour range for the
symbol proporcional to the density of symbols concentrated in one determined 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.,.
5.15.3

DVB-S/S2 (QPSK/8PSK) signal

Go to the UTILITIES menu by pressing the
CONSTELLATION option.
The modulation type: DVB-S (QPSK) or DVB-S2 (8PSK) is showed on screen.
Next, the frequency and channel number correspoding to the channel plan selected as
well as the satellite downlink frequency. Finally, it shows the status line (similar to the
measurement screen).
Figure 48.- Constellation Diagram. DVB-S (QPSK) signal.
When selecting a constellation diagram for DVB-S2 signals, on screen will appear
the following information:
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USER'S MANUAL TV EXPLORER
[22] key, and then select the
HD ISDB-T/T
B
NOTE
10/2012