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USER'S MANUAL. PROLINK-4
In case of detecting a DVB signal, message MPEG-2 DVB-S will appear and
the DVB Channels Identifier function will be automatically activated. (See section
'4.9.2 DVB Channels Identifier: DCI function').
DVB-S channels tuning may require an adjusting process. It is recommended to
follow next procedure:
1.- From the spectrum analyser mode, tune the channel at its central
frequency.
2.- Switch to TV mode, BER measuring 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
optimizes 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 and if signal level is too low, check that the 30 dB
attenuator is not activated (Attenuator 0 dB).
4.9.1.5.4
Measuring Wrong Packets of TS MPEG-2 (W.P.)
When the BER measurement indicates acceptable reception quality (always to
the left of the QEF level), and the identification information confirms that you have found
the required channel, you can analyse the Wrong Packets received from the MPEG-2 /
DVB Transport Stream.
Press the rotary selector [4] to access the functions menu in digital mode, and
select the Wrong Packets option to access the W.P. measurement screen.
Figure 19.- Selecting the W.P. measurement function. (WRONG PACKETS).
02/2003
IMPORTANT REMARK
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