Itu-T J.83/B Signals - Promax US TV EXPLORER II Manual De Uso

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, ATSC for the measurement
of 8-VSB modulated signals or DVB-S/S2 or DSS for the measurement of
QPSK/8PSK modulated signals. Available frequency ranges are:
3) Enter the parameters relative to the digital signal which appears in the
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:
-8
FREQ:
CH:
Figure 31.- Screen of BER measurement of QAM Annex-B signals.
The BER measurement before error correction is shown: BER before FEC
(Forward Error Correction).
Page 54
[12] key until the BER measurement display appears.
-7 TOV -5
213.00 MHz C/N:
-3 kHz POWER:
A13 MER:
» BER:
USER'S MANUAL. US TV EXPLORER
-4 -3 -2
16.5 dB
66.2 dBµV
24.7 dB
5.6E-7
II
[17] key.
11/2013