MR8740、MR8741_user_manual_eng_20191016H.pdf - 第224页
9.1 Numerical Calculation Workflow 212 There are two different ways of performing calculation. • Calculating the data automatically af ter the measurement: Settings for numerical calcula tion must be made before the m ea…
211
Chapter 9 Numerical Calculation Functions
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9
Numerical calculations can only be used with the Memory function.
Results calculated from the acquired waveform are displayed as numerical values on the Waveform
screen. Numerical calculation settings are made on the Status screen - [Num Calc] sheet.
Numerical Calculation
Functions Chapter 9
Opening the [Num Calc] sheet
Select [STATUS] and
then [Num Calc] from
the right-click menu.
Numerical Calculations
• Average
• RMS (Root-Mean-Square) value *
• Peak-to-Peak Value
•Maximum Value
• Time to Maximum Value
• Minimum Value
• Time to Minimum Value
•Period
• Frequency
•Rise Time *
•Fall Time *
• Standard Deviation *
• Area *
•X-Y Area *
• Time to Level
• Level at Time
• Pulse Width
• Duty Ratio(%)
• Pulse Count
• Four Arithmetic Operations
• Time difference calculation
• Phase contrast calculation
• High level calculation *
• Low level calculation *
(Total of 24 types)
• Specified calculation between
A/B cursors
Waveform calculations can be limited
to data within the range specified by A/
B cursors.
*: Calculation performed with
MR8990 Digital Voltmeter Unit is in-
valid.
Calculation operator details:
"9.5 Numerical Calculation Type and
Description" (p.223)
Numerical Calculation Judgment (p.218)
The result of a numerical calculation can be compared to a
preset reference range, for GO/NG (Pass/Fail) evaluation.
Save Numerical Calculation Results
• Auto Save numerical calculation results
• Save specified existing numerical calculation result
See: "9.4 Saving Numerical Calculation Results" (p.221)
Operations available from the [Num Calc] sheet
There are a total of 24 types of numerical
calculations, 16 of which can be performed
simultaneously.
When the Scaling function is used, numeri-
cal calculation is performed on the scaled
value.
9.1 Numerical Calculation Workflow
212
There are two different ways of performing calculation.
• Calculating the data automatically after the measurement: Settings for numerical calculation must be made
before the measurement.
• Calculating the existing data: Calculation is possible for waveform data after measurement is completed,
and for data saved on media.
9.1 Numerical Calculation Workflow
Calculating While Measuring
Make Calculation Settings Make calculation settings on the [Num Calc] sheet. (p.214)
When judging based on calculation results:
To automatically save calculation results: make saving settings
before measuring.
• Saving calculation results automatically
(p.218)
(p.221)
Start Measurement
Acquire Data The instrument acquires data when the trigger criteria are
met.
(If triggering is not enabled, the instrument acquires data when
measurement is started.)
Calculate "Measurement" appears on the screen's status bar.
Calculations are performed sequentially from No. 1 to No. 16.
(To interrupt calculations, click [STOP] to abort.)
Display Calculation Results Results are displayed on the Waveform screen. (p.217)
(Calculation Judgments) (only if judgments are enabled)
(Save) (if auto saving is enabled)
Calculation results are automatically saved.
Stop Measurement
9.1 Numerical Calculation Workflow
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Chapter 9 Numerical Calculation Functions
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Applying Calculations to Existing Data
(Load the Data) (To load measurement data from storage media for calcu-
lation)
(p.99)
Make Calculation Settings
Make calculation settings on the Numerical Calculation
sheet ([Num Calc] sheet)
(p.214)
When judging based on calculation results: (p.218)
Execute Calculation Select [Exec] to execute calculations.
(To interrupt calculations, click [STOP].)
Display Calculation Results Results are displayed on the Waveform screen. (p.217)
(Calculation Judgments) (only if judgments are enabled)
(Save) Save calculation results as occasion demands.
•Save: [SAVE]
When [Save Calc Result] (p.221) is set to [On], results are
automatically saved.
When specifying a waveform range for calculation:
Before executing a calculation, specify the calculation range using the A/B
cursors (div or Trace cursors) on the Waveform screen. Set the calculation
range on the [Num Calc] sheet to [A-B Wave].
• Range cursors cannot be used to specify the range.
• When one cursor is used, the calculation range is from the cursor to the
end of the data.
See: "6.2 Specifying a Waveform Range (A/B Cursor)" (p.124)
"9.2 Settings for Numerical Value Calculation" (p.214)