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Section 7: Capturing and analyzing waveforms
•
high = 8.029 μs
•
period = 19.16 μs
•
Duty cycle = 8.029 μs /19.16 μs = 40%
Expected output = duty cycle × input = 40% × 12 V = 5 V
The red dots at the top of the cycles indicate an overflow condition, which occurs because the 12 V
measurement is over the 10 V measurement range. Instead of increasing the range to 100 V, which
reduces the analog bandwidth to 6 kHz, you can change the signal coupling to ac to maintain the
bandwidth integrity. Refer to the following screen capture of the ac coupled waveform.
7-10
Model DMM7510 7½ Digit Multimeter Application Manual
Figure 16: Duty cycle 2
Figure 17: Graph with ac signal coupling
DMM7510-904-01 Rev. D March 2021
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