:POWer Commands 26
Keysight InfiniiVision 4000 X-Series Oscilloscopes Programmer's Guide 627
:POWer:CLResponse:APPLy
(see page 1428)
Command Syntax
:POWer:CLResponse:APPLy
The :POWer:CLResponse:APPLy command performs the control loop response
(Bode) analysis to help you determine the margin of a control loop.
A Bode plot measurement plots gain or phase (selected by the
:POWer:CLResponse:VIEW command) as a function of frequency.
This control loop response analysis requires an input sine wave (from the
oscilloscope's waveform generator, Vi) be swept from a low to a high frequency
while measuring Vi and Vo RMS voltages at each step frequency, using two
channels of the oscilloscope.
For a gain plot, gain (A, in dB units) at each step frequency is computed as
20Log(Vo/Vi) and plotted using a math function waveform.
For a phase plot, the phase difference between the channels is measured at each
step frequency. Phase measurements and plots are only possible if the input and
output waveforms exceed 1 division peak-to-peak (>1 mVpp).
It takes some time for the frequency sweep analysis to complete. You can query bit
0 of the Standard Event Status Register (*ESR?) to find out when the analysis is
complete.
See Also • "*ESR (Standard Event Status Register)" on page 204
• ":POWer:CLResponse" on page 626
• ":POWer:CLResponse:DATA" on page 628
• ":POWer:CLResponse:FREQuency:MODE" on page 629
• ":POWer:CLResponse:FREQuency:STARt" on page 630
• ":POWer:CLResponse:FREQuency:STOP" on page 631
• ":POWer:CLResponse:PPDecade" on page 632
• ":POWer:CLResponse:SOURce:INPut" on page 633
• ":POWer:CLResponse:SOURce:OUTPut" on page 634
• ":POWer:CLResponse:WGEN:LOAD" on page 635
• ":POWer:CLResponse:WGEN:VOLTage" on page 636
• ":POWer:CLResponse:WGEN:VOLTage:PROFile" on page 637
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