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5.14.7.1 DVB-C signals
Once determined the parameters of
BER
, press the
[12] key until the
BER
In the
measurement mode, the monitor will show a display like the following
one:
Figure 29
BER
The
measurement before error correction is shown:
(Forward Error Correction).
In a digital reception system for cable signals, after the
correction method called
the error rate after the corrector is lower to the error rate at the
This is the reason because this screen provides the
(Forward Error Correction).
BER
The
measurement is provided in scientific notation (i.e. 1.0 E-5 means
1.0x10
-5
that is to say one wrong bit of every 100000) and through an analogue bar (as
its length is smaller the signal quality will be better). The analogue representation is done
on a logarithmic scale (not linear).
Page 56
USER'S MANUAL.
QAM
BER
measurement display appears.
DVB-C
QAM
.-
(
) signals
Reed-Solomon
is applied (see following Figure). Obviously,
Figure 30.-
Digital reception system via cable.
TV EXPLORER HD / HD
signal, it will be possible to measure
BER
measurement screen.
BER before FEC
QAM
demodulator an error
QAM
BER
measurement before FEC
LE
decoder output.
10/2012
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