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Sweep/Control
Turning Gate View off returns the analyzer to the Normal measurement view.
In the Swept SA, the normal measurement view is the single-window Swept SA view. When returning to
this view, the Swept SA measurement returns to the Span it was in before entering Gate View (even if
that is Zero Span).
The Gate View window is triggered from the Gate Source, with zero trigger delay. Also, when updating
the Gate View window, the Gate itself must not operate. So it is internally shut off while the gate view
window is being updated. For the Swept SA measurement, this means that the Gate is internally shut off
whenever the gate view window is displayed. The measurement bar and softkeys continue to show the
Trigger source for the main sweep window and give no indication that the Gate is shut off or that the
Gate View window is triggered from the Gate Source.
When in Gate View, vertical lines are displayed in the Gate View window as follows:
• Green lines are displayed at the gate edges as follows: in Edge Gate, a line is shown for Delay and
one for the end of the Gate period (defined by Length, even in FFT. In Level Gate a line is shown
only for Delay. You can adjust the position of the green lines by adjusting the gate length and the gate
delay. These lines update in the Gate View window as the active function changes, even if the
window is not being updated. In Gated LO and Gated Video, these lines are positioned relative to the
delay reference line (not relative to 0 time). In Gated FFT, their location is relative to the left edge of
the screen.
• A blue line is displayed showing the delay reference, that is, the reference point for the Gate Delay
within the Zero Span window. The blue line represents where (in time) the effective location of the
gate start would be if the gate were programmed to zero delay.
• The second blue line is labeled "MIN FAST" as shown in the figure above because it represents the