Controls Description
Delete Power 1 Deletes the selected power measurement badge.
Configure Profile
Use the Configure Profile menu to configure the amplitude profile for the Control Loop Response (Bode)
measurement.
It is recommended to customize the internal signal generator amplitude values using the amplitude profile configuration. Profiling allows
you to set the generator to a lower amplitudes, at different frequencies where the DUT is sensitive, and set the higher amplitudes
where the DUT is less sensitive to distortion. A Switched-mode Power Supply (SMPS) is very sensitive near the zero degree cross over
frequency, so it is advisable to define a profile, instead of using a constant amplitude output signal.
The following table list the available configurations.
Field or control Description
Start Displays the start frequency.
Stop Displays the stop frequency.
Amplitude Shows the amplitude value used to set the AFG level.
Insert Step Inserts an additional row displaying start, stop, and amplitude values.
Delete Step Deletes the selected row.
Clear Table Clears all the values in the table.
Use the following steps to configure the amplitude profile for a Control Loop Response (Bode) measurement:
1. T
ap Configure Profile button. The configure profile dialog is displayed. The configure profile dialog displays two rows:
• The start frequency in the first row is the start frequency from the Control Loop Response (Bode) measurement configuration
panel.
• The stop frequency in the first row is the mean of start and stop frequency values from the Control Loop Response (Bode)
measurement configuration panel.
• The start frequency in the second row is the same stop frequency value in the first row from the table of configure profile. This
applies to all the following rows added in the table of configure profile.
• The stop frequency in the second row is the stop frequency from the Control Loop Response (Bode) measurement configuration
panel.
2. Edit the values as necessary to reduce the variations in the gain curve at particular frequencies where the DUT is sensitive to
distortion. Adjust by making configuration changes and viewing the response in the gain/phase curve of the Control Loop Response
(Bode) plot.
3. Tap outside the configure profile table save your updates.
Sample amplitude values for a DC-DC convertor DUT
Start Stop Amplitude
10 Hz 100 Hz 1 V
100 Hz 500 Hz 800 mV
500 Hz 1 kHz 600 mV
1 kHz 10 kHz 400 mV
10 kHz 100 kHz 350 mV
Table continued…
Menus and dialog boxes
2 Series MSO MSO24 and MSO22 1
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