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FIELD METERS MCT 080 / 081 / 082 / 085 USER MANUAL
10.9
DVB-C
TUNER
Display of the measures of:
BERo:
error rate before Reed Solomon
PER:
error rate after Reed Solomon (error rate packet)
MER:
modulation error rate
LKM:
Noise margin (Link Margin)
BERo:
error rate 'bits'
Ratio between the number of false bits / number of transmitted bits during the measurement time
PER:
error rate 'packets'
Ratio between the number of false packets / number of transmitted packets during the
measurement time
Recall: under DVB-C, a packet is made of 188 bytes; a packet is "false" if it includes more than 8 wrong
bytes (correction by Reed Solomon coding).
REED
DEMODULATOR
SOLOMON
BERo
DECODING
MPEG
PER
p.
59
Constellation
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