Keysight U8903B, User Manual

Page: 363 / 605

Test Sequence Application 7
Keysight U8903B User’s Guide 363
Stepped level sweep
Stepped sweep is an audio testing method where one parameter is swept across a range of
values while one or more other parameters are measured. The stepped level sweep
measurement provides a sine wave stimulus signal that is moved across a range of levels in
a specified number of points. The DUT output is acquired by the analyzer and the results
are displayed on an X-Y graph, with the generator level on the X-axis and the measured
results from the DUT on the Y-axis (AC Level, Gain, THD Ratio, THD Level, THD Ratio Vs
Measured Amplitude, THD Level Vs Measured Amplitude, THD+N ratio, THD+N Level,
THD+N Ratio Vs Measured Amplitude, THD+N Level Vs Measured Amplitude, and SINAD).
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 stepped level sweep signal generation settings menu page is displayed as shown in
Figure 7-45 .
Figure 7-45 Stepped Level Sweep > Signal Generation settings menu page
NOTE
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.
NOTE
The signal generation is disabled if None is selected for the output configuration channel.