Anritsu Spectrum Master MS2720T, User Manual

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Spectrum Analyzer 2-36 Limit Menu
Spectrum Analyzer MG PN: 10580-00349 Rev. H 2-101
Limit Advanced Menu
Key Sequence:
Shift > Limit
(
6
) key
> Limit Advanced
Limit Line Type Absolute/Relative: Press this submenu key to choose to
have either limit line be absolute or be relative. This submenu key may be
used at any time while working with limit lines. Absolute limit lines set the limit
inflection points based upon the entered frequencies for each point. Relative
limit lines set the limit inflection points relative to the current center frequency.
Regardless of how a limit line is set up, saved, or recalled, it can be changed
between absolute and relative by toggling with this submenu key.
Limit Mirror Off/On: Press this submenu key to turn the Limit Mirror feature
On and Off.
Many emission masks are symmetrical. The low frequency side is identical to
the upper side. The Limit Mirror feature allows you to create half of the limit
line and get the other half built automatically. This feature can work in either
of two ways:
Turn Limit Mirror on before beginning to build a limit line. As you add a
point on either side of the center frequency, another point is
automatically added on the opposite side of the center frequency.
Leave Limit Mirror off until half of the limit line is built, then turn On Limit
Mirror. the other half of the limit line is built automatically.
Save Limit: Pressing this submenu key opens a dialog to save the current
upper and lower limit lines. You can name the saved limit line yourself or
accept the name that is suggested by the instrument (which is based upon a
previously saved name). If you did not intend to save the limit line, then press
Esc to stop the dialog and avoid saving the limit line.
Recall Limit: Pressing this submenu key opens a dialog box to recall a
saved limit line. The dialog box presents a list of saved limit lines. Highlight
the desired limit line and press
Enter . If you decide not to recall a limit line,
then press Esc to stop the dialog.
If the saved limit is a relative limit, then it is recalled centered about the
current center frequency. If the saved limit is an absolute limit, then it is
recalled to the frequency at which it was created.
If you recall an absolute limit, and if it is off screen, then you will see the left or
right limit off-screen indicator on the edge of the screen.
Back: Press this submenu key to return to the “Limit Menu” on page 2-95 .
Figure 2-88. SPA Limit Advanced Menu
Limit Line Type
Absolute Relative
Limit Advanced
Back
Save
Limit
Recall
Limit
Limit Mirror
Off On
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