Promax TV EXPLORER HD ISDB-T/T B Manual De Instrucciones página 166

Terrestrial band - Digital channels (DVB-C, ISDB-T/T
Channel power
C/N
MER
CBER
VBER
Satellite band - Analogue channels
Level
C/N
Satellite band - Digital channels (DVB-S/S2/DSS):
Channel Power
C/N
MER
Page 50
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.
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. In a case of ISDB-T/T
signal, it also identifies the layer where the measurement is done
(between brackets).
BER measurement (Bit error rate) for the digital signal before
error correction (BER before FEC). In a case of ISDB-T/T
signal, it also identifies the layer where the measurement is done
(between brackets).
BER (Bit error rate) measurement for the digital signal after the
error correction (BER after Viterbi). In a case of ISDB-T/T
signal, it also identifies the layer where the measurement is done
(between brackets).
Level measurement of the currently tuned carrier.
Ratio between the modulated signal level 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 DSS and Link Margin for DVB-S2.
USER'S MANUAL TV EXPLORER
and ITU-T J.83/B):
B
HD ISDB-T/T
B
B
B
B
10/2012