10: Capturing and analyzing waveforms Model DMM7510 7½ Digit Multimeter
10-4 DMM7510-900-01 Rev. B / May 2015
Ripple noise on the output voltage
This test measures the ripple voltage captured on the output terminal of the buck converter evaluation
board.
For this test, you will:
• Connect the 3 Ω load resistor to the output terminals of the buck converter
• Connect test leads to the output terminals of the buck converter
• Supply 12 V to the input terminals of the buck converter
• Reset the instrument
• Select the digitize voltage function and set sample rate to 1 Msamples per second with a sample
count of 100
• View the data the graph
• Turn on horizontal cursors to measure voltage ripple magnitude
Device connections
The connections for the ripple noise test are shown in the figure below.
Figure 35: Ripple noise on output voltage device connections
北京海洋兴业科技股份有限公司（证券代码：839145）
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