Agilent Technologies N4413A User Manual page 65

The STOP: line shows the ending frequency and a two-line confirmation menu displays:
7. Click on Zoom to confirm selected settings. The part of the trace between the start and
stop points is zoomed.
8. To restore the original measurement range, right click in the gray area outside of the plot
to display the display properties menu and select Restore Full Sweep Data from the
menu.
If frequency zooming has been applied to the data, the +Data button appears in the indicator
bar:
If a measurement is made after the frequency axis is zoomed, only the points within the zoom
range are measured. This creates a new set of calibration data adjusted to the new frequency
range.
As soon as the measurement starts, the +Cal button appears in the indicator bar to show that
the calibration in use is a subset of the full calibration available:
At the end of the measurement, the +Data button disappears because all available
measurement points have been displaced.
Chapter 3
Using the Multiport Test System
How to Use Frequency Zoom
55