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10.2.1.5
10.2.2
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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:
x
Wherein,
is the amplitude of the
i
value, and
n is the number of points being measured.
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.
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
Figure 10.4
interface, as shown in
the measurement items to enable the measurements. This series allows you to enable
measurements of up to 14 items at the same time.
TIP
Multi-pane Windowing
You can also refer to
•
Vertical: Vmax, Vmin, Vpp, Vtop, Vbase, Vamp, Vupper, Vmid, Vlower, Vavg,
VRMS, Per. VRMS, Overshoot, Preshoot, Area, Per.Area, and AC.RMS.
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15
10
20
5
25
0
30
n
∑
(
x
Average
−
i
i
1
S
td
.
Dev
=
=
n
ith point, Average is the waveform average
Figure 10.5
Figure 10.6
,
, and
to enable all measurements.
Measurements
2
)
. Click or tap any of
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DHO1000 User Guide
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