7 Test Sequence Application
354 Keysight U8903B User’s Guide
DFD frequency sweep
DFD frequency sweep measurement will hold one of the two frequencies (IEC60118 upper
or difference frequency and IEC60268 center or difference frequency) at a fixed frequency
while the other is swept through a range of frequencies. The results are displayed on an X-Y
graph, with the swept frequency on the X-axis and the measured DFD ratio on the Y-axis.
Refer to “Measurement Results” on page 399 for more information on the respective result
menu page. Use the arrow keys to navigate through the respective tabs and to display the
menu page.
Signal generation
The DFD frequency sweep signal generation settings menu page is displayed as shown in
Figure 7-41.
Figure 7-41 DFD Frequency Sweep > Signal Generation settings menu page
This measurement requires a closed-loop configuration in which both the generator and
the analyzer are used in the test setup. If None is selected for the output configuration
channel, this measurement is unavailable.
The signal generation is disabled if None is selected for the output configuration channel.
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