Rohde & Schwarz 1321.0615.02, Руководство пользователя

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Modulation Analysis
R&S
®
Spectrum Rider FPH
252 User Manual 1321.1011.02 ─ 11
For more information frequency configuration, see Chapter 6.1.1, "Measuring Basic
Signal Characteristics" , on page 123, Chapter 6.1.2, "Measuring the Channel Power of
Continuously Modulated Signals" , on page 125 and Chapter 6.2, "Configuring Spec-
trum Measurements" , on page 172.
1. Press [FREQ] key.
2. Select "Center Freq" softkey.
The R&S Spectrum Rider opens an input field to define the center frequency input.
10.2.3 Amplitude Configuration
For more information on the amplitude configuration, see Chapter 6.2.3, "Configuring
the Vertical Axis" , on page 177.
Defining the position of the reference for ASK signals
In the graphical result displays, the reference position on the y-axis can be adjusted to
see the signal in greater details. By default, the maximum reference position is set to
100%.
1. Press [AMPT] key.
The R&S Spectrum Rider opens the amplitude menu.
2. Select the "Ref Position" menu item.
The R&S Spectrum Rider opens an input field to define the reference position in
term of percentage.
3. Enter the required value.
The R&S Spectrum Rider adjusts the y-axis and the position of the trace accord-
ingly.
Adjusting the display range for ASK and FSK signals
The R&S Spectrum Rider display range is divided into 10 grid sections, you can define
the deviation per grid section.
1. Press [AMPT] key.
The R&S Spectrum Rider opens the amplitude menu.
2. Select the "Deviation Per Division" menu item.
The R&S Spectrum Rider opens an input field to define the deviation.
3. Enter the required deviation.
The R&S Spectrum Rider adjusts the scale of the y-axis accordingly.
10.2.4 Sweep and Trigger Configuration
The sweep and trigger menu provides settings to control the measurement and the
way data is captured.
Digital Demodulation
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