3 VMA Mode
3.1 Digital Demod Measurement
Modulation
Formats
Results
–
2nd number = Q of the symbol 0 decision point
–
…
–
(2 * X) + 1 number = I of the symbol 1 decision point
–
(2 * X) + 2 number = Q of the symbol 1 decision point
–
…
–
(2 * X) * N +1 th number = I of the symbol N decision point
–
(2 * X) * N +2 th number = Q of the symbol N decision point
3.1.1.5 Measurement Results for RI = 07
The FETCh, MEASure, or READ queries return the following comma-separated scalar
results for Segment SI. For values of SI, see "Index Sub-Fields" on page 184.
For details of available formats, see "Modulation Format" on page 335.
Modulation
Formats
Results
2-FSK, 4-FSK,
8-FSK, 16-FSK
CPM (FM)
FSK Ref Time of Segment SI
Returns a series of floating point numbers that represent the data of the reconstructed reference trace
When "IQ Normalize" on page 347 is ON, the magnitude of the trace points are normalized to 1.0
2-ASK ASK Ref Time of Segment SI
Returns a series of floating point numbers that represent the data of the reconstructed reference trace
When "IQ Normalize" on page 347 is ON, the magnitude of the trace points are normalized to 1.0
All others IQ Ref Time of Segment SI
Returns a series of floating point numbers that alternately represent I and Q pairs of the reconstructed
reference trace
When "IQ Normalize" on page 347 is ON, the magnitude of the trace points are normalized to 1.0
The first number is the I sample of symbol 0 decision point and the second number is the Q sample of
symbol 0 decision point. There are X points per symbol (X = points/symbol). Therefore, the series of
numbers is:
–
1st number = I of the symbol 0 decision point
–
2nd number = Q of the symbol 0 decision point
–
…
–
(2 * X) + 1 number = I of the symbol 1 decision point
–
(2 * X) + 2 number = Q of the symbol 1 decision point
Vector Modulation Analyzer Mode User's &Programmer's Reference 204
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