Selecting The Measurements - Promax TV EXPLORER II Manual De Instrucciones

USER'S MANUAL. TV EXPLORER II/II+
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 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.
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 Level measurement of the currently tuned carrier.
Video / Audio Video carrier to audio carrier ratio.
C/N Ratio between the modulated signal power and the equivalent
noise power for a same bandwidth. (according to TV standard)
FM Deviation Measure the frequency peak deviation for any modulated
analogue carrier in FM.
12/2013
IMPORTANT REMARK
[13], tune the channel at its central
[12], measurement selection.
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