R&S FSV-K7 Operating Manual page 11

Analog demodulation and fm stereo
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R&S
FSV-K7/K7S
Further information
2.1.1
Circuit Description - Block Diagrams............................................................................ 11
2.1.2
Demodulation Bandwidth.............................................................................................. 13
2.1.3
Sample Rate, Measurement Time and Trigger Offset...................................................13
2.1.4
Variable-Sized Capture Buffer.......................................................................................15
2.1.5
AF Trigger..................................................................................................................... 16
2.1.6
Configuring Traces........................................................................................................ 16
2.1.7
Trace Mode Overview................................................................................................... 17
2.1.8
Detector Overview.........................................................................................................19
2.1.9
Stability of Measurement Results..................................................................................20
2.1.10
Measurement Result Display........................................................................................ 20
2.1.11
ASCII File Export Format.............................................................................................. 23
2.1.1 Circuit Description - Block Diagrams
The software demodulator runs on the main processor of the analyzer. The demodula-
tion process is shown in
simultaneously with the same I/Q data set. Magnitude (= amplitude) and phase of the
complex I/Q pairs are determined. The frequency result is obtained from the differential
phase.
For details on the analyzer signal processing refer to the TRACe:IQ subsystem in the
base unit.
Operating Manual 1176.7561.02 ─ 06
Analog Demodulation Option R&S FSV-K7
Instrument Functions Analog Demodulation
Figure 2-1
the figure below. All calculations are performed
11

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