Dvb-C Signals - Promax TV EXPLORER HD User Manual

5.14.7.1 DVB-C signals

Once determined the parameters of
BER
, press 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
BER
[12] key until the
DVB-C QAM
.- ( ) signals
Reed-Solomon
Figure 30.-
Digital reception system via cable.
USER'S MANUAL.
QAM
signal, it will be possible to measure
measurement display appears.
BER
measurement screen.
QAM
is applied (see following Figure). Obviously,
BER
measurement before FEC
TV EXPLORER HD / HD
BER before FEC
demodulator an error
QAM
decoder output.
10/2012
LE