4
SETTINGS AND CALIBRATIONS
63
Chapter
4
SETTINGS AND CALIBRATIONS
4-9.
Waveform comparison setting
■
What is the waveform comparison function?
- Whether or not a measurement waveform is between comparison waveforms is judged by
preparing the comparison waveforms in advance.
- If Relative Comparison is selected, waveforms fluctuating up and down with each measurement
can relatively be compared.
- By this function, comparison waveforms are relatively moved according to the load at the
Reference Point of Relative Comparison, which should previously be set by time or
displacement, on a measurement waveform.
- If the measurement does not reach the Reference Point, no judgment is made. (All Wave Result
outputs are OFF.)
■
Waveform comparison in continuous mode
- Waveforms are judged with respect to the number of times they deviate from HI/LO limit of
comparison waveforms created.
- Waveforms are also judged with respect to continuation range of deviation condition.
< Non-defective >
Load
< Defective >
Measurement waveform
Comparison waveform
Load
Time or
Time or
displacement
displacement
< Before relative movement >
Time or
Load
< Relative movement of comparison waveforms >
Time or
Measurement waveform
Comparison waveform
Load
Reference Point of
Relative Comparison
Reference Point of
Relative Comparison
displacement
displacement
- Relative movement can only be made in the Y-axis direction.
- In continuous mode, relative comparison function is invalid.
Point
HI Limit
< HI limit: twice and LO limit: once >
< HI limit range 5 >
HI Limit
LO Limit
once
twice
3 times
HI judgment
once
1
2
3 4 5
6
HI judgment
Range monitors the amount of waveform data.
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