MR8740T_user_manual_eng_20191016H.pdf - 第155页
150 Evaluating Calculation Results on a Pass/Fail Basis Displaying evaluation results and externally outputting signals The numerical calculation result screen of the waveform screen displays numerical calculation evalua…
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Evaluating Calculation Results on a Pass/Fail Basis
> [Calculation] > [Numerical calculation]
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1
Click the [Judge stop condition] box, and then from the list, choose a stopping condition
applied according to judgments.
PASS Stops measurement when a calculation result falls within a criteria range (pass
judgment).
FAIL Stops measurement when a calculation result is outside a criteria range (fail judgment).
PASS & FAIL
Stops measurement regardless whether a pass or fail judgment is given.
2
Click the [Judge] box, and then from the list, choose whether or not to evaluate calculation
results.
Off
Evaluates calculation results.
On Yields a fail judgment if a result is outside a criteria range.
Calculated values in a channel with the fail judgment are highlighted in red.
3
Click the [Up] and [Low] boxes in turn, and then enter evaluation criteria values in each of
them.
Enterable range: −9.9999E+29 to −1.0000E29, 0, +1.0000E29 to +9.9999E-29
(To evaluate existing data)
Click [Execute].
(To automatically execute evaluation after measurement)
Click the start icon.
About upper and lower limit values
You cannot specify an upper limit value lower than a lower limit value.
Neither can you specify a lower limit value higher than a upper limit value.
To record all calculation results
Choose [PASS & FAIL] for the stopping condition.
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Numerical Calculation Function
150
Evaluating Calculation Results on a Pass/Fail Basis
Displaying evaluation results and externally outputting signals
The numerical calculation result screen of the waveform screen displays numerical calculation
evaluation results.
Values that fall within an evaluation criteria range: Pass judgment
Values outside an evaluation criteria range: Fail judgment (highlighted in red)
When a pass judgment is given
When the external output terminals (OUT 1, OUT 2) are set to [Judge(Pass)], a PASS signal is
output from the external output terminals (OUT 1, OUT 2).
When a fail judgment is given
When the external output terminals (OUT 1, OUT 2) are set to [Judge(Fail)], a FAIL signal is output
from the external output terminals (OUT 1, OUT 2). A fail judgment is given when any one of the
channels is judged to be a fail.
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Numerical Calculation Types and Descriptions
7.4 Numerical Calculation Types and Descriptions
Calculation
type
Description
Average value
Calculates an average value of waveform data.
AV E
: Average value
n
: Number of data points
di
:
i
th data point acquired across the channel
RMS
Calculates an RMS value of waveform data. When the scaling is enabled, the instrument
scales waveform data before calculation.
RMS
: Root-mean-square value
n
: Number of data points
di
:
i
th data point acquired across the channel
P-P
Calculates a difference (peak-to-peak
value) between the maximum and
minimum values of waveform data.
Maximum
P-P
Minimum
Maximum
Calculates the maximum value of
waveform data.
Maximum
Time to
maximum
Calculates a period of time (unit: s) from a
trigger point to the maximum value.
When waveform has two or more points
of the maximum value, the instrument
determines the rst of them in the
waveform used for a calculation to be the
maximum value.
Maximum
Time to maximum
Minimum
Calculates the minimum value of
waveform data.
Minimum
Time to
minimum
Calculates a period of time (unit: s) from a
trigger point to the minimum value.
When waveform has two or more points
of the minimum value, the instrument
determines the rst of them in the
waveform used for a calculation to be the
minimum value.
Minimum
Time to minimum
Period
Frequency
Displays a period (unit: s) and frequency
(unit: Hz) of a signal waveform.
The instrument calculates a period and
frequency based on a time lag between
the time when a waveform crossed the
specied level in the positive (or negative)
direction the rst time and the time when it
next crossed the specied level.
Settings: Level, Slope, Filter, Stat.
Level at time
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Numerical Calculation Function