Digital Tv: Measuring Mer - Promax TV EXPLORER HD ISDB-T Manual

USER'S MANUAL. TV EXPLORER
Finally it is shown a status line with information about the detected signal. The
possible messages that can appear and its meaning are shown in the following list. The
messages are exposed from less to more fulfilment of the MPEG-2 standard:
No signal received
Any signal has been detected.
Signal received
A signal is detected but it can not be decoded.
Carrier recovered
A digital carrier has been detected but it can not be decoded.
Viterbi synchronized
A digital carrier has been detected and the Viterbi algorithm is synchronized, but
too many frames arrive with non correctable errors. It is not possible to quantify the
BER.
MPEG-2 TS DVB-S
Correct detection of a MPEG-2 signal.

5.14.8 Digital TV: Measuring MER

Once determined the suitable parameters for ISDB-T/T
signal reception, it will be possible to measure MER, press
the MER measurement screen.
Figure 42.- Screen of MER measurement of ISDB-T/T
First of all, you will see the modulation error ratio measurement: MER. In the case
of measuring an ISDB-T/T
the layer where the measurement is done. The layer can be (A), (B) or (C).
11/2010
HD ISDB-T/T
B
signal, the letter in brackets next to the measure indicates
B
, QAM, DVB-S or DVB-S2
B
[12] key until it appears
signals.
B
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