FIELD METERS MCT 080 / 081 / 082 / 085 USER MANUAL
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10.13 DVB-S2
Display of the measures of:
BERi
:
error rate before LDPC
BERo
:
error rate after LDPC
PER
:
error rate after BCH (lost packets)
MER
:
modulation error rate
LKM
:
Noise margin (Link Margin)
Recall:
LDPC: Low Density Parity Check
BCH: Bose Chauhuri Houquenohem
The concatenation V Reed Solomon of the correction of DVB-S has been replaced by the
concatenation LDPC + BCH under DVB-S2.
Display of the type of
Modulation
detected:
constellation (8PSK)
Viterbi rate (2/3)
10.13.1 Multistream
The 'Multistream' option allows you to view a DVB-S2 signal that uses Multiple Transport Stream technology
(several multiplexes are transported on the same transponder simultaneously).
Example: broadcasting of the two multiplexes of the TNT on
Eutelsat 5 West A 5°W
inside the same
transponder
Frequency: 12648MHz Vertical, DVB-S2 29500, ISI: 1, Gold code: 121212
TUNER
DEMODULATOR
BCH
DECODING
MPEG
BERi
PER
LDPC
BERo
Constellation
