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15. AC RMS: indicates the root-mean-square value of the waveforms, with the DC
component removed. The formula is shown as follows:
n
Averagex
DevS
n
i
i
∑
1
2
)(
.td
=
−
=
Wherein,
x
i
is the amplitude of the
ith
point,
Average
is the waveform average
value, and
n
is the number of points being measured.
10.2.1.5 Other Parameters
• Positive Slew Rate: On the rising edge, first calculate the difference between
the high value and the low value, then use the difference to divide the
corresponding time value to obtain the positive slew rate.
• Negative Slew Rate: On the falling edge, first calculate the difference between
the low value and the high value, then use the difference to divide the
corresponding time value to obtain the negative slew rate.
• Area: indicates the area of the whole waveform within the screen. The unit is
V*s. The area of the waveform above the zero reference (namely the vertical
offset) is positive, and the area of the waveform below the zero reference is
negative. The area measured is the algebraic sum of the area of the whole
waveform within the screen.
• Period Area: indicates the area of the first period of waveform on the screen.
The unit is V*s. The area of the waveform above the zero reference (namely the
vertical offset) is positive, and the area of the waveform below the zero
reference is negative. The area measured is the algebraic sum of the whole
period area.
10.2.2 Select the Measurement Item
In the Measure menu, click or tap Horizontal, Vertical, or Other to go to the desired
menu. You can also slide to select the measurement item to enter the corresponding
interface, as shown in
Figure 10.4
,
Figure 10.5
, and
Figure 10.6
. Click or tap any of
the measurement items to enable the measurements. This series allows you to enable
measurements of up to 14 items at the same time.
TIP
You can also refer to
Multi-pane Windowing
to enable all measurements.
• Vertical: Vmax, Vmin, Vpp, Vtop, Vbase, Vamp, Vupper, Vmid, Vlower, Vavg,
VRMS, Per. VRMS, Overshoot, Preshoot, Area, Per.Area, and AC.RMS.
Measurements
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
DHO1000 User Guide
145
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