10: Capturing and analyzing waveforms Model DMM7510 7½ Digit Multimeter
10-4 DMM7510-900-01 Rev. C / September 2019
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 megasamples per second with a
sample count of 100
• View the data on the graph screen
• Turn on horizontal cursors to measure the magnitude of the voltage ripple
Device connections
The connections for the ripple-noise test are shown in the figure below.
Figure 37: Output voltage connections for the ripple-noise test
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