Eye Diagram Display - Tektronix SPECMON3 Manual

GP Digital Modulation
The settings for the EVM vs. Time display are shown in the following table.
NOTE. You might be able to save time configuring the EVM vs. Time display by pressing the Standard
Settings button from the Settings control panel. This allows you to select a preset optimized for a standard
from the Select Standard dialog box. See
Settings tab
Modulation Params (see
page 309)
Freq & BW (see page 313)
Equalizer Tab (see page 314)
Advanced Params (see
page 316)
Find (see page 319)
Analysis Time (see page 319)
Trace (see page 321)
Scale (see page 323)
Prefs (see page 323)
xxx

Eye Diagram Display

The Eye Diagram Display shows a digitally modulated signal overlapped on itself to reveal variations in
the signal.
To show an Eye Diagram display:
1. Press the Displays button or select Setup > Displays. This shows the Select Displays dialog box.
2. From the Folders box, select GP Digital Modulation.
3. Double-click the Eye Diagram icon in the Available Displays box. This adds the Eye Diagram icon
to the Selected displays box.
4. Click the OK button. This displays the Eye Diagram view.
290
Standard Settings Button. (see page 308)
Description
Specifies the type of modulation used in the input signal and other parameters that
controls the demodulation of the input signal.
Specifies settings for frequency error, measurement BW and Frequency Deviation. Each
of these settings is set internally when set to Auto. Alternatively, you can specify values
appropriate for specific measurement needs.
Enable the Equalizer and adjust its parameters.
Specifies Freq Offset, Magnitude normalization parameters, and enables swapping
I and Q.
The Find tab is used to set parameters for finding bursts within the data record.
The Analysis Time tab contains parameters that define how the signal is analyzed in the
general purpose digital modulation displays.
Specifies the display characteristics of the displayed trace.
Specifies the horizontal and vertical scale settings.
Specifies whether certain display elements are visible.
Eye Diagram Display
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