Unipulse F381A - Page 74

65
4 SETTINGS AND CALIBRATIONS
65
SETTINGS AND CALIBRATIONS
Chapter
4
- Inflection Point
The point at which the load changes
drastically is held.
Detection is carried out from the point at
which the Detection Start Load is crossed,
and when the inflection point detection
conditions are met, the inflection point is
held.
- Average
Average is calculated and held.
Average is calculated and held when X-axis
represents displacement upon completion of
measurement.
- End Displacement
The position of the measurement completion
can be judged by using the End Displacement
for the Use Hold.
The End Displacement is different from other
hold types, so it judges not based on a wave
starting point but based on an original point
of the displacement.
* It is not necessary to input Change of Sct. and to set Sct. Start-End of Hold.
* End displacement can be set only final section among the sections set by "Number of Use Sec."
when X-axis of wave form is displacement.
* The line of DPM HI/LO Limit is not displayed on the actual measurement screen.
What is “crossing” the Detection Start Load?
Load's passing the detection start load in the positive-to-negative or negative-to-positive direction
is called "crossing."
If detection is not started, check again the setting of Detection Start Load and the change of load in
the section referring to the following examples.
Valid section
OFF
ON
Detection Hold
Detection
Start Load
a
Hold
input
Section
Start point End point
(Time or DPM (Front))
Section
End point Start point
(DPM (Back))
Indicated
value
Sensor input
value
Valid section
OFF
ON
Detection and hold Hold
Hold
input
Section
Start point End point
(Time or DPM (Front))
Section
End point Start point
(DPM (Back))
Indicated
value
Sensor
input
value
Displace-
Load
010 50
Section
Measurement
LO limit of HI limit of
displacement displacement
ment
Detection
Start Load
Load
Start point
of the section
Start point
of the section
Start point
of the section
Start point
of the section
Start point
of the section
×
Not crossing
×
Not crossing
〇
Crossing in the
negative-to-
〇
Crossing in the
positive-to-
×
Crossing
but not
in the section
positive direction negative direction