DPO6000
，
MPO6000 Series Digital Phosphor Oscilloscope Instruction V1.1
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8.Measurement
8.1.Measurement parameter specification
DPO6000/MPO6000 series oscilloscopes provide auto measurements of 42 waveform
parameters and the statistics and analysis of the measurement results. What’s more, you
can also use the digital multimeter(DVM) to realize more precise frequency measurement.
8.1.1.Time parameter
1.
Period[Pk-Pk]
:defined as the time between the middle threshold points of two
consecutive, like-polarity edges.
2
.
[Frequency]
:defined as the reciprocal of period.
3.
[Rise Time]
:the time for the signal amplitude to rise from the threshold lower limit to the
threshold upper limit.
4.
[Fall Time]
: the time for the signal amplitude to fall from the threshold upper limit to the
threshold lower limit.
5.
[+Width]
: the time difference between the threshold middle value of a rising edge and
the threshold middle value of the next falling edge of the pulse.
6.
[-Width]
:the time difference between the threshold middle value of a falling edge and
the threshold middle value of the next rising edge of the pulse.
7.
[+Duty]
:the ratio of the positive pulse width to the period.
+ Duty =
positive pulse
period
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8.
[-Duty]
:the ratio of the negative pulse width to the period.
− Duty =
negative pulse
period
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9.
[BWidth]
:The time from the first edge of the data source to the last edge of the data
source.
10.
[Vmax Time]
:the time corresponding to the waveform maximum value (Vmax).
11.
[Vmin Time]
:the time corresponding to the waveform minimum value (Vmin).
Note
: The default values of the threshold upper limit, threshold middle value and threshold
lower limit are 90%, 50% and 10% respectively.
8.1.2..Count Values
1.
[+Pulse Count]
:the number of positive pulses that rise from below the threshold lower
limit to above the threshold upper limit.
24.
[-Pulse Count]
:he number of negative pulses that fall from above the threshold upper
