YOKOGAWA DL7440 User Manual

10-59
IM 701450-01E
10
Analyzing and Searching Waveforms
Explanation
This section explains the setup procedures for performing measurement and statistical
processing on the same measurement parameters as the automated measurement of
waveform parameters. The following five statistics can be displayed on the measured
values of two measurement parameters.
Max Maximum value
Min Minimum value
Avg Average value
Sdv Standard deviation
Cnt Number of measured values used in the statistical processing
For example, if you selected P-P of CH1 as a measurement parameter, the maximum,
minimum, average, standard deviation, and the number of measured values used in the
statistical processing of the P-P of CH1 are displayed.
Target Waveform
The waveform on which measurement and statistical processing are performed is CH1 to
CH8/4*, Math1, or Math2. Statistical processing is performed on the measurement
target waveform that was selected in section 10.6.
* On the DL7440, the waveform is CH1 to CH4, Math1, or Math2. On the DL7480, the
waveform is CH1 to CH8, Math1, or Math2.
Measurement Parameters on Which Statistical Processing Is Performed
• Measurement and statistical processing can be performed on the same measurement
parameters as those of the automated measurement of waveform parameters.
• In the normal measurement and statistical processing and the measurement and statistical
processing of history waveforms, statistical processing can be performed on the computed
parameters of the automated measurement of waveform parameters on dual areas.
• The statistics that can be displayed are two parameters of the selected measurement
parameters (see page 10-46) in either type of measurement and statistical
processing. If you selected three or more measurement parameters, the first two
parameters in the order of parameters that are specified to be measured (P-P, Max,
Min, ... , Init1XY, and Init2XY) in the Item Setup dialog box (see page 10-47) from the
smallest channel are displayed. For example, if you selected P-P of CH1, Min of
CH2, and Max of CH3, P-P of CH1 and Min of CH2 are displayed. The statistics that
are not displayed can be loaded into a PC using the communication function. For
details, see the
Communication Interface User’s Manual (IM701450-17E) .
Measurement Range
The measurement range is the same as the measurement range specified in the
automated measurement of waveform parameters. See section 10.6 or 10.8.
Methods of Measurement and Statistical Processing
The following three types of measurement and statistical processing are available.
Normal Measurement and Statistical Processing
Measurement and statistical processing of the selected measurement parameters are
performed on all acquired waveforms while acquiring waveforms.
• If you stop waveform acquisition and start it again, measurement and statistical
processing continues from where it left off.
• Measurement and statistical processing are performed on the selected measurement
parameters that are not displayed. Therefore, if you disable the measurement and statistical
processing of a displayed measurement parameter while waveform acquisition is in progress,
the statistics of the next selected measurement parameter in line to be displayed are
displayed. The number of measured values used in the measurement and statistical
processing (Cnt) is the number of measured values measured up to that point.
• If you add measurement and statistical processing on a new measurement parameter
while waveform acquisition is in progress or when it is stopped, the number of
measured values used in the measurement and statistical processing (Cnt) is the
number of measured values measured since the parameter was added.
10.7 Performing Statistical Processing of the Measured Values of Waveform Parameters

YOKOGAWA DL7440 Specifications

General

Brand	YOKOGAWA
Model	DL7440
Category	Test Equipment
Language	English