HBM MP85A - Page 76

Measurement procedure
76 A0293_06_E00_03 HBM: public MP85A
Dynamic zero point, relative to y (force trigger).
When the reference value is reached, displacement is set
to zero. The windows are now based on this zero point.
Reference value
Measured curve
10 20 30 40 50 60 70 Absolute coordinates
Relative coordinates from start (y
1
)
y
1
50403020100
Fig. 8.7 Reference values for relative x-coordinates relative, based on y-value
Using the relative y-coordinates option, you can have the curve analyzed rela
tive to the minimum, maximum or mean value that was reached within the sec
ond tolerance window. The windows that are linked in this manner are shifted
up or down parallel to the y-axis, depending on the position of the value. The
selected reference value also applies to all other windows with relative y-coor
dinates.
Reference: Mean value in W2
Measued curve 1
W2
W3
y
1
Reference: Mean value in W2
Measured curve 2
W3
W2
y
1
Fig. 8.8 Reference values for relative y-coordinates, based on mean value