Datasheet

sampling criteria, you can quickly view the waveform on the
DMM’s graphical display.
Follow these steps to capture about five 50kHz ripples at a
sample rate of 1MSample/s and a sample count of 100 using the
Model DMM7510’s Digitize Voltage function:
1. Press the POWER button on the front panel to turn on the
instrument.
2. On the FUNCTIONS swipe screen, select Digi V to select the
Digitize Voltage measure function.
3. Swipe to display the SETTINGS swipe screen.
4. Set the Sample Rate to 1,000,000.
5. Set the Count to 100.
6. Swipe to display the GRAPH swipe screen.
7. Select the graph icon on the upper right of the swipe screen
to open the Graph screen.
The screen captures in
Figure 3 directly compare the
ripples captured on a Model DMM7510 to a typical mid-range
oscilloscope.
Figure 3a illustrates the buck converter output
when both instruments are configured in DC coupling mode.
The Model DMM7510 clearly demonstrates superior range and
resolution capabilities than the oscilloscope. On the 10V range,
the Model DMM7510 is able to capture a dynamic signal as low
as tens of millivolts. However, the oscilloscope is incapable of
resolving the signal to this resolution and is further limited by
the maximum DC offset on its lowest range.
Figure 3b illustrates the ripple voltage when both
instruments are configured in AC coupling mode. Although the
oscilloscope can resolve the ripple to some extent, the Model
DMM7510 provides far superior accuracy and precision at these
very low signal levels.
Analyzing the Ripple Voltage
Measurement from the Front Panel
As with any touch screen technologies, you may pinch to zoom
with your fingers to change the scale of the graph; you may
pan the waveform left or right; you may touch any point on the
waveform to show details of the reading including timestamps;
you may also enable horizontal and/or vertical cursors to analyze
Figure 3a. DC-coupled ripple voltage from the Model DMM7510 (left) and from a typical mid-range oscilloscope (right).
Figure 3b. AC-coupled ripple voltage from the Model DMM7510 (left) and from a typical mid-range oscilloscope (right).