Digital Tv: Measuring Ber; Itu-T J.83/B Signals - Promax TV EXPLORER HD ISDB-T Manual

5.14.7 Digital TV: Measuring BER

The TV EXPLORER
(BER) of digital signals depending on the type of used modulation.
To select the BER measurement mode:
1) Select digital signals Measurements Configuration pressing
2) Select by means of Signal option from CONFIGURATION menu: ITU-T J.83/B for
the measurement of QAM Annex-B modulated signals, DVB-C for the
measurement of QAM Annex-A modulated signals, ISDB-T/T
measurement of ISDB-T/T
of QPSK/8PSK modulated signals.
3) Enter the parameters relative to the digital signal which appear in the
measurement CONFIGURATION menu, as described previously.
4) Select the option to exit from measurements CONFIGURATION menu.
5.14.7.1

ITU-T J.83/B signals

Once determined the parameters of QAM Annex-B signal, it will be possible to
measure BER, press the
In the BER measurement mode, the monitor will show a display like the following
one:
Figure 30.- Screen of BER measurement of QAM Annex-B signals.
The BER measurement before error correction is shown: BER before FEC
(Forward Error Correction).
Page 56
USER'S MANUAL. TV EXPLORER
HD ISDB-T/T offers three ways to measure the error rate
B
modulated signals or DVB-S/S2 for the measurement
B
[12] key until the BER measurement display appears.
HD ISDB-T/T
B
[17] key.
for the
B
11/2010