Agilent Technologies N4413A, User Manual

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Using the Multiport Test System
How to Use Frequency Zoom
Chapter 3 56
Increasing Frequency Step
The multiport test system allows measurements to be made at frequency step sizes larger
than the step size used in the calibration. This is accomplished by skipping points.
To skip points, follow these steps:
1. Right click in the gray area outside the plot to open the display properties menu.
2. In the display properties menu, select Define Point Skip . The Select Number of Points to
Skip dialog box appears:
3. Select the number of points (0 to 10) to skip between two measured points.
4. Select one of the buttons at the bottom of the dialog to finish the selection.
5. To restore the original measurement condition, right click in the gray area outside of the
plot, and select Restore Full Sweep Data from the menu.
If the frequency step has been increased, the +Data button appears in the indicator bar.
If a measurement is made after increasing the frequency step, fewer points are measured.
This creates a new set of calibration data adjusted to the new frequency step.
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 point have been displaced.
APPLY Applies the new settings without closing the dialog box.
OK Applies the new settings and closes the dialog box.
Cancel Closes the dialog box without making any changes.