sparos sat hd - Spaun
sparos sat hd - Spaun
sparos sat hd - Spaun
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– SPAROS SAT HD Series –<br />
9.1 DVB-T/H (SPAROS SAT HD DVB-T only)<br />
TUNER DEMODULATOR VITERBI REED<br />
SOLOMON<br />
DECODING<br />
MPEG<br />
BERi BERo PER<br />
Display of the values:<br />
• BERi: error rate before Viterbi<br />
• BERo: error rate after Viterbi<br />
• PER: error rate after Reed Solomon (packet error rate)<br />
• MER: modulation error rate<br />
• NM: noise margin<br />
BERx: ‘bits’ error rate<br />
Ratio of the number of erroneous bits / number of transmitted bits during the measuring time<br />
PER: ‘packets’ error rate<br />
Ratio of the number of erroneous packets / number of transmitted packets during the measuring time<br />
Remember: a packet in DVB-T/H is made of 204 bytes; a packet is ‘wrong’ if it includes more than 8 wrong<br />
bytes (correction by Reed Solomon coding).<br />
Display of the detected Modulation type:<br />
• number of carrier waves (8 K)<br />
• constellation (64QAM)<br />
• guard interval (1/32 auto)<br />
• Viterbi rate (2/3)<br />
• spectrum inversion.<br />
In case of poor quality signal or co-frequent analogical signal, you'd better choose the manual front guard<br />
interval mode. To do this, you had to change the “Modulation” parameter by choosing the good guard<br />
interval.<br />
The display of the value of Cell_ID indicated by the provider and specific to the emitter.<br />
p. 52
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