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TV EXPLORER HD / HD
USER'S MANUAL.
The transmission quality is visualised 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 yellow 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.,.
5.15.1.1 Zoom
scroll and erasing functions
,
TV EXPLORER
The
representation over one single quadrant. Select the
over the whole viewing area using arrow cursors
SHARP
graph screen or
5.15.2 DVB-C (QAM) signal
UTILITIES
Sets on the
CONSTELLATION
option.
On screen appears the modulation type:
and channel number are indicated. Finally, it shows the type of
network used.
10/2012
LE
HD
/
HD
also includes, a
LE
option to increase the image clearness.
Figure 42
.- Zoom x2 constellation diagram.
menu by pressing the
ZOOM
function to enlarge graphic
SCROLL
option to move the focus
CLEAR
[6] key,
option to reset the
[22] key, and select the
DVB-C
256 QAM
(
). Also the frequency
DVB-C
NOTE
broadcast
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