7½ Digit Multimeter User's Manual Section 10:
Capturing and analyzing waveforms
DMM7510-900-01 Rev. B / May 2015 10-15
Power-up behavior
You can use the Model DMM7510 to capture the start-up behavior of the buck converter. The start-up
inspection can ensure that the device turns on in a reasonable amount of time without any
unexpected glitches or pulses. You can capture the asynchronous power-up event by using the
analog trigger feature on the Model DMM7510.
For this test, you:
• Connect the 4 Ω load resistor to the output terminals of the buck converter
• Connect test leads to the output terminals of the buck converter
• Reset the instrument
• Select the digitize voltage function and set the sample rate to 1 Msample per second
• Set sample count to 10,000 to monitor the power-up event for 10 ms
• On the front panel of the instrument, open the Graph screen and set the graph scale option
X-axis Method to All
• Set up the edge trigger level and position
• Run the trigger model to capture the voltage waveform
• Turn on 12 of input voltage to the input terminals of the buck converter
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