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USER’S MANUAL.
TV EXPLORER
HD
ISDB-T/T
B
11/2010
Page
63
En
g
lis
h
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
B
, QAM, DVB-S
or
DVB-S2
signal reception, it will be possible to measure
MER
, press
[12] key until it appears
the
MER
measurement screen.
Figure 42
.- Screen of
MER
measurement of
ISDB-T/T
B
signals.
First of all, you will see the
modulation error ratio
measurement:
MER
.
In the case
of measuring an
ISDB-T/T
B
signal, the letter in brackets next to the measure indicates
the layer where the measurement is done. The layer can be (A), (B) or (C).
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