Tektronix MSO64 — как отобразить график отклика контурной системы управления [140/628]

Display a Control Loop Response (Bode) plot

Use this procedure to display a Control Loop Response (Bode) plot for a power measurement. Requires option 5-PWR or 6-

PWR.

To display an Control Loop Response power measurement and plot:

1. Tap the Add New... Measurement button.

2. Tap the Power tab.

3. Set the voltage and current sources for the measurement.

4. Tap the Frequency Response Analysis panel.

5. Select the Control Loop Response measurement and tap Add.

The Control Loop Response measurement adds a Power measurement badge to the Results bar, and automatically adds

the Control Loop Response plot to the screen.

6. Double-tap in the Plot view to open a configuration menu for that plot.

NOTE. Gain Margin (GM) represents the margin value and not the actual value annotated in the Bode plot. The GM value

indicates distance (basically how far) from the reference value (zero dB line). The margin is computed as zero minus the

measured value. The measured value becomes negative when it is below 0 dB, then margin is positive and vice versa.

Add a Search

Use this procedure to set search criteria and mark a waveform where those events occur.

You can search on analog and digital signals, math waveforms, and reference waveforms. You can add searches to different

waveforms and multiple searches to the same waveform. Prerequisite: Display the channel or waveform signal on which to

search. The waveform must be displayed to create a search for it.

1. Display the channel or waveform signal on which to search. The waveform must be displayed to create a search for it.

2. Tap the Add New...Search button to open the Search configuration menu.

3. Use the configuration menu fields to set the search criteria in the same way that you would set for a trigger condition (select

the Search Type, Source, and conditions on which to search).

NOTE. You cannot search for sequential events (there is no Sequence search type).

Analog channel operating basics

110 4/5/6 Series MSO Help