Keysight x-series - Page 312

3 VMA Mode
3.1 Digital Demod Measurement
Parameter DVB-S2 QPSK DVB-S2 8PSK DVB-S2 16-APSK
Code Rate 2/3
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
I/Q Offset
Compensation
On On On On On On
APSK R2/R1 NA NA NA NA NA 3.15
APSK R3/R1 NA NA NA NA NA 5.27
Parameter DVB-S2 16-APSK
Code Rate 3/4
DVB-S2 16-APSK
Code Rate 4/5
DVB-S2 16-APSK
Code Rate 5/6
Segments Segment1 Segment2 Segment1 Segment2 Segment1 Segment2
Modulation
Format
QPSK
(Custom IQ)
16-APSK QPSK
(Custom IQ)
16-APSK QPSK
(Custom IQ)
16-APSK
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
I/Q Offset
Compensation
On On On On On On
Vector Modulation Analyzer Mode User's &Programmer's Reference 312