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1. Vmax: indicates the voltage value from the highest point of the waveform to the
GND.
2. Vmin: indicates the voltage value from the lowest point of the waveform to the
GND.
3. Vpp: the voltage value from the highest point to the lowest point of the
waveform.
4. Vtop: indicates the voltage value from the flat top of the waveform to the GND.
5. Vbase: indicates the voltage value from the flat base of the waveform to the GND.
6. Vamp: indicates the voltage value from the top of the waveform to the base of
the waveform.
7. Vupper: indicates the actual voltage value that corresponds to the threshold
maximum value.
8. Vmid: indicates the actual voltage value that corresponds to the threshold middle
value.
9. Vlower: indicates the actual voltage value that corresponds to the threshold
minimum value.
10. Vavg: indicates the arithmetic average value on the whole waveform or in the
gating area. The formula is shown as follows:
n
x
Average
n
i
i
∑
1=
=
Wherein,
x
i
is the
ith
point, and
n
is the number of points being measured.
11. VRMS: indicates the root mean square value on the whole waveform or in the
gating area. The formula is as follows:
n
x
RMS
n
i
i
∑
1
2
=
=
Wherein,
x
i
is the measurement result of the
ith
point, and
n
is the number of
points being measured.
12. Per.VRMS: indicates the root mean square value within a period. The formula is
as shown above.
13. Overshoot: indicates the ratio of the difference between the maximum value and
the top value of the waveform to the amplitude value.
14. Preshoot: indicates the ratio of the difference between the minimum value and
the base value of the waveform to the amplitude value.
Measurements
DHO4000 User Guide
158
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
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