Promax TV EXPLORER HD ATSC Manual De Instrucciones página 56

C/N
MER
SER
VBER
Satellite band - Analogue channels
Level
C/N
Satellite band - Digital channels (DVB-S/S2):
Channel Power
C/N
MER
CBER
VBER
LBER
In order to change the measurement highlighted, press the
monitor will appear cyclically all the measures available for the signal on tune.
Page 48
Out-channel measurement. Noise level is measured at f noise =
f tuning ± ½*Channel BW. To measure it correctly digital channel
must be tuned at its central frequency.
Modulation error ratio measurement.
Measuring the number of erroneous segments divided by the
total segments received.
BER (Bit error rate) measurement for the digital signal after the
error correction (BER after Viterbi).
Level measurement of the currently tuned carrier.
Ratio between the modulated signal power and the equivalent
noise power for a same bandwidth.
Channel power is measured assuming that power spectral
density is uniform throughout channel bandwidth.
To measure it correctly it is indispensable to define the
Channel BW.
Ratio between the modulated signal power and the equivalent
noise power for a same bandwidth.
Modulation Error Ratio. Complementary measurement of the
Noise Margin for DVB-S and the Link Margin for DVB-S2.
The BER measurement (Bit error rate) for the digital signal
before error correction (BER before FEC).
(Only for DVB-S) The BER measurement (Bit error rate) for the
digital signal after error correction (BER after Viterbi).
(Only for DVB-S2) The BER measurement (Bit error rate) for the
digital signal after error correction (BER after LDPC).
USER'S MANUAL. TV EXPLORER HD ATSC
[12] key. On the
12/2010