USER’S MANUAL. TV EXPLORER II/II+
12/2013
Page
53
En
g
lis
h
5.14.7
Digital TV: Measuring BER
The
TV EXPLORER II / II+
offers three ways to measure the error rate (
BER
) of
digital signals depending on the type of used modulation.
To select the
BER
measurement mode:
1)
Select digital signals
Measurements Configuration
pressing
[17] key.
2)
Select by means of
Signal
option from
CONFIGURATION
menu:
DVB-C
for the
measurement of
QAM
modulated signals,
DVB-T/H
for the measurement of
COFDM
modulated signals or
DVB-S/S2
for the measurement 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
DVB-C signals
Once determined the parameters of
QAM
signal, it will be possible to measure
BER
, press the
[12] key until the
BER
measurement display appears.
In the
BER
measurement mode, the monitor will show a display like the following
one:
FREQ:
CH:
C/N:
POWER:
MER:
BER:
»
16.5
66.2
24.7
dB
dBµV
dB
MHz
kHz
650.00
-3
43
3.4 E-4
-6 -5 -4 -3 -2 -1
MPEG-2 TS
Figure 29.-
DVB-C
(
QAM
) signals
BER
measurement screen.
