R3131 Spectrum Analyzer Operation Manual
2.2 Basic Operation
2-25Jul 10/98
Activating the display line
The display line is convenient for comparing one trace level to another.
7. Press DISPLAY and Display Line ON/OFF.
The display line is activated.
8. Move the display line vertically so that it aligns with the peak on the right side
by turning the data knob.
This makes it easier to compare trace levels.
Figure 2-15 Activating the Display Line
Activating the reference line
This activates the reference line allowing you to enter reference level settings.
9. Press Ref Line ON/OFF.
The reference line appears, and the reference level can now be set.
10. Move the reference line vertically until it is aligned with the maximum peak so
that you can obtain a display line value relative to the maximum peak.
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