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USER’S MANUAL. US TV EXPLORER II
01/2008
Page
55
En
g
lis
h
FREQ:
CH:
C/N:
POWER:
MER:
SER:
VBER:
»
>21.3
55.8
19.5
dB
dBµV
dB
MHz
kHz
57.00
-3
A02
10 30 50 70 90 110 130
1.0E-5
1.0E-8
MPEG-2
Figure 30.-
Digital channel power measurement.
In addition to the power of the digital channel (55.8 dBµV in previous figure) this
also shows the tuning frequency or channel, depending on the tuning mode selected,
and the offset frequency to calculate the digital channel power.
In order that the power measurement of a
DVB-S/S2
digital channel will be good it
is essential to have previously defined the channel bandwidth using the
Channel BW
option, in the
Measurements Configuration
menu that appears when pressing
[17] key.
5.14.7 Digital TV: Measuring BER
The
US TV EXPLORER II
offers three ways to measure the bit 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:
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 appear in the
measurement
CONFIGURATION
menu, as described previously.
4)
Select the option to exit from measurements
CONFIGURATION
menu.
Summary of Contents for US TV EXPLORER II
Page 1: ...US TV EXPLORER II EXPLORADOR US DE TV EXPLORATEUR US DE TV 0 MI1526...
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Page 5: ...CONTENTS SUMARIO SOMMAIRE English manual Manual espa ol Manuel fran ais Fran ais English...
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Page 18: ...USER S MANUAL US TV EXPLORER II Page 10 01 2008...
Page 22: ...USER S MANUAL US TV EXPLORER II Page 14 01 2008...
Page 28: ...USER S MANUAL US TV EXPLORER II Page 20 01 2008...
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Page 104: ...MANUAL DE INSTRUCCIONES US TV EXPLORER II P gina 10 01 2008...
Page 108: ...MANUAL DE INSTRUCCIONES US TV EXPLORER II P gina 14 01 2008...
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Page 192: ...MANUEL D UTILISATION US TV EXPLORER II Page 10 01 2008...
Page 196: ...MANUEL D UTILISATION US TV EXPLORER II Page 14 01 2008...
Page 202: ...MANUEL D UTILISATION US TV EXPLORER II Page 20 01 2008...
Page 264: ...MANUEL D UTILISATION US TV EXPLORER II Page 82 01 2008...
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