Monitoring Signal Characteristics
R&S
®
SMW200A
607User Manual 1175.6632.02 ─ 30
Remote command:
[:SOURce]:BB:GRAPhics:SOURce on page 1105
Mux Stream
In "System Configuration > Signal Outputs > Digital Only Multiplexed" mode, selects
which of the multiplexed streams is monitored and displayed.
Remote command:
[:SOURce]:BB:GRAPhics:SOURce:MUX on page 1105
FFT Length
In "Mode > Power Sepectrum", selects the number of samples to be included in the
graph of the power spectrum.
Remote command:
[:SOURce]:BB:GRAPhics:FFTLen on page 1106
Full Scale (dBFS)
In "Mode > Power Spectrum", determines the normalization of the power values in the
diagram.
Observe the change in the units on the y-axis.
"On"
The maximal digital power |I|=|Q|=max is mapped to 0 dB in the
power spectrum diagram.
The y-axis shows the normalized power in dBFS.
"Off"
The frequency average of the displayed power (frequency domain)
agrees with the average power in the time domain.
The y-axis shows the power distribution in dB/Hz.
Remote command:
[:SOURce]:BB:GRAPhics:FFTFscale on page 1106
Trigger Source
Defines the trigger for signal recording.
"Software"
Recording of signals starts automatically in predefined intervals.
This asynchronous method is suitable if a representative display of
the complete signal is required.
"Marker 1"
The starting point for recording of signals is determined by the marker
1 setting of the activated digital standard ("Trigger/Marker" dialog).
This synchronous method is suitable if specific signal segments are
to be shown in greater detail. With periodic signals, a static image is
obtained by selecting a period length of marker 1 that is equal to the
signal period.
The displayed signal segment can be shifted by entering a marker
delay in the "Trigger/Marker" dialog of the activated digital standard.
Remote command:
[:SOURce<hw>]:BB:GRAPhics:TRIGger:SOURce on page 1106
Displaying Baseband Signal Characteristics in Real-Time
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