DPO6000
，
MPO6000 Series Digital Phosphor Oscilloscope Instruction V1.1
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In this mode, the oscilloscope samples the signal at equal time interval to rebuild the
waveform. For most of the waveform, the best display effect can be obtained using this
mode.
3.5.2.Peak
In this mode, the oscilloscope acquires the maximum and minimum values of the signal
within the sample interval to get the envelope of the signal or the narrow pulse of the
signal that might be lost. In this mode, signal confusion can be prevented but the noise
displayed would be larger.
In this mode, the oscilloscope can display all the pulses with pulse widths at least as wide
as the sample period.
l
3.5.3.Average
In this mode, the oscilloscope averages the waveform from multiple samples to reduce the
random noise of the input signal and improve the vertical resolution.Greater number of
averages can lower the noise and increase the vertical resolution;while at the same time,
it will slow the response of the displayed waveform to the waveform changes.
DPO6000/MPO600 series oscilloscope adopts the method of taking the stable average of
the first n collection and then taking the exponential average method.These two
algorithms can always show the trend of changing waveform.The stable averaging
algorithm is as follows:
A
=
1
=1
=
1
=1
−1
+
1
A
=
− 1
A
−1
+
1
Ave
n
is the average sample value, Xi is the i-th sample value, and n is the current average
number.
When "Average" mode is selected, press
“average time”
menu to set the desired number
of averages. The number of averages can be set to 2,4,8,16,32,64,128,256,512 or 1024.
The default is 2.
Examples of unaveraged waveform:
