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Chapter 4 117
Overview of the Test Set’s Built-In Tools
Using the Spectrum Analyzer
Defining the Relative Mask’s Limits
1. Set the Edit Mask field to the limit you want to edit (Upper or
Lower).
You might want to set the Mask Beep field to Off while you are
defining the mask.
2. Set the Mask Type field to Rel.
3. Set the #Pts field to the number of points you want defined by the
mask. The starting point is always the left graticule on the display,
and the end point is always the right graticule on the display.
To define a straight-line mask, set the number of points to 1.
The default mask is a straight line at the top of the display.
4. Set the EditPt field to the point you want to define.
5. Set the Level Ofs and Freq Ofs fields to the frequency and level
offsets you want for the point you chose in the EditPt field.
The offsets are relative to the frequency and level set in the Center
Freq and Ref Level fields on the spectrum analyzer’s Main controls
menu.
Refer to Figure 4-27 on page 116. Instead of setting Level and Freq,
set the Level Ofs and Freq Ofs.
Turning Off the Mask
1. Set the Display field to Off to turn off the spectrum analyzer mask.
Turning Off the Mask’s Failure Beeper
1. Set the Mask Beep field to Off to turn off the beeping failure
indicator.