Operating Your Instrument
Application Presets
Application Preset
Description
Modulation Analysis
The Modulation Analysis setup application preset provides you with the most common
displays used during modulation analysis.
Pulse Analysis
The Pulse Analysis application preset provides you with the most common displays
used during pulse analysis, and makes changes to the default parameters to settings
better optimized for pulsed signal analysis. Option 20 is required to use the pulse
measurements applications preset.
Spectrum Analyzer
The Spectrum Analysis application presets provide you with the settings commonly used
for general purpose spectrum analysis.
Time-Frequency Analysis
The Time-Frequency preset con
fi
gures the instrument with settings suited to analyzing
signal behavior over time.
xxx
Modulation Analysis
The Modulation Analysis application preset opens the following displays:
DPX Spectrum Display: Shows you a continuous spectrum monitoring of the speci
fi
ed carrier
frequency.
Signal Quality: Shows a summary of modulation quality measurements (EVM, rho, Magnitude
Error, Phase Error, and others).
Constellation: Shows the I and Q information of the signal analyzed in an I vs. Q format.
Symbol Table: Shows the demodulated symbols of the signal.
To use the Modulation Analysis preset:
1.
Select
File
>
Application Presets
>
Modulation Analysis
. Click
OK
.
2.
Set the measurement frequency using the front-panel knob or keypad. Your signal should appear in
the DPX spectrum display.
3.
Set the reference level so that the peak of your signal is about 10 dB below the top of the DPX
spectrum display.
4.
Set the modulation parameters for your signal. This includes the Modulation Type, Symbol Rate,
Measurement Filter, Reference Filter and Filter Parameter. All of these settings are accessed by
pressing the Settings button.
For most modulated signals, the Modulation Analysis application preset should present a stable display of
modulation quality. Additional displays can be added by using the Displays button, and other settings can
be modi
fi
ed to better align with your signal requirements.
Pulse Analysis
The Pulse Analysis application preset opens the following displays:
DPX Spectrum: The DPX spectrum display is opened with the maximum available span.
Time Overview: Shows amplitude vs. time over the analysis period.
RSA6100A Series Real-Time Spectrum Analyzers Help
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