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USER'S MANUAL. TV EXPLORER HD +
9)
LNB High Osc.
Sets the LNB high band local oscillator.
NOTE:
In the channel tuning mode the Polarization and Sat Band options cannot be
modified.
This configuration menu shows, besides the QPSK/8PSK signal parameters
selected by user, all the values automatically detected:
Roll Off
Nyquist filter roll-off factor.
Pilots
(Only in DVB-S2) Pilots detection in transmission.
DVB channels tuning may require an adjusting process. It is recommended to follow
next procedure:
1.
From the spectrum analyser mode
frequency.
2.
Switch to Measurements mode
3.
If in the lower line of the screen does not appear MPEG-2 message (and
consequently BER is unacceptable), by turning the rotary selector deviate the
tuning frequency until MPEG-2 message appears. Finally tune channel again
to minimize the frequency deviation which optimises the BER and therefore
minimize the BER.
If it is not possible to detect any MPEG-2 channel, make sure that digital signal
parameters are correctly defined.
5.14
Selecting the Measurements
The types of measurements available depend on the operating band (terrestrial or
satellite) and the type of signals (analogue or digital).
Terrestrial band - Analogue channels:
Level
Video / Audio
12/2011
Level measurement of the currently tuned carrier.
Video carrier to audio carrier ratio.
IMPORTANT REMARK
[13], tune the channel at its central
[12], measurement selection.
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