3 VMA Mode
3.1 Digital Demod Measurement
Parameter DVB-S2X 16-APSK
Code Rate 96/180 (8/15)
DVB-S2X 16-APSK
Code Rate 100/180 (5/9)
DVB-S2X 16-APSK
Code Rate 140/180 (7/9)
Cosine Cosine Cosine Cosine Cosine Cosine
Ref Filter Raised
Cosine
Raised
Cosine
Raised
Cosine
Raised
Cosine
Raised
Cosine
Raised
Cosine
Filter Alpha 0.35 0.35 0.35 0.35 0.35 0.35
Points /
Symbol
5 5 5 5 5 5
Meas Interval 90 symbols 1000 symbols 90 symbols 1000 symbols 90 symbols 1000 symbols
Search Length 3.3552 msec 3.3552 msec 3.3552 msec 3.3552 msec 3.3552 msec 3.3552 msec
Burst Search Off NA Off NA Off NA
Sync Search On NA On NA On NA
Parameter DVB-S2X 16-APSK
Code Rate 154/180 (77/90)
DVB-S2X 16-APSK
Code Rate 3/5
Short FEC
DVB-S2X 16-APSK
Code Rate 7/15
Short FEC
Segments Segment1 Segment2 Segment1 Segment2 Segment1 Segment2
Modulation
Format
QPSK
(Custom IQ)
16-APSK
(Custom IQ)
QPSK
(Custom IQ)
16-APSK
(Custom IQ)
QPSK
(Custom IQ)
16-APSK
(Custom IQ)
Info BW 25 MHz 25 MHz 25 MHz 25 MHz 25 MHz 25 MHz
Symbol Rate 10 MHz 10 MHz 10 MHz 10 MHz 10 MHz 10 MHz
Meas Filter Root Raised
Cosine
Root Raised
Cosine
Root Raised
Cosine
Root Raised
Cosine
Root Raised
Cosine
Root Raised
Cosine
Ref Filter Raised
Cosine
Raised
Cosine
Raised
Cosine
Raised
Cosine
Raised
Cosine
Raised
Cosine
Filter Alpha 0.35 0.35 0.35 0.35 0.35 0.35
Points /
Symbol
5 5 5 5 5 5
Meas Interval 90 symbols 1000
symbols
90 symbols 1000
symbols
90 symbols 1000
symbols
Search Length 3.3552 msec 3.3552 msec 3.3552 msec 3.3552 msec 3.3552 msec 3.3552 msec
Burst Search Off NA Off NA Off NA
Sync Search On NA On NA On NA
Parameter DVB-S2X 16-APSK
Code Rate 8/15
Short FEC
DVB-S2X 16-APSK
Code Rate 26/45
Short FEC
DVB-S2X 16-APSK
Code Rate 32/45
Short FEC
Segments Segment1 Segment2 Segment1 Segment2 Segment1 Segment2
Modulation
Format
QPSK
(Custom IQ)
16-APSK
(Custom IQ)
QPSK
(Custom IQ)
16-APSK
(Custom IQ)
QPSK
(Custom IQ)
16-APSK
(Custom IQ)
Info BW 25 MHz 25 MHz 25 MHz 25 MHz 25 MHz 25 MHz
Vector Modulation Analyzer Mode User's &Programmer's Reference 316
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