6
Linear Error Correction
(
L
.
Comp/LEC
)
:
In this mode place a slip gauge of standard length on the X-Y
table. Align it properly for calibration.
Now bring cross hair to one of the edge of slip. Reset the axis.
Now move the crosshair to other end of the slip and note down the
display reading. Now enter the Linear compensation mode for
that axis by selecting {L. Comp} at “Apply Comp X Axis”.
Enter the standard value as the slip value and the observed value
using the numeric keys on keyboard. Press [Enter] to confirm.
The DRO will calculate the linear calibration factor and stores into
its memory. The user can edit this calibration factor by changing
the observed value or the standard value in the same mode. After
doing this you may check the axis performance by measuring
different slips and confirm the accuracy.
1
Segmented Error Correction (S.Comp / SLEC):
Segmented Linear Error Compensation (SLEC) is used when the
results of the comparison with a reference standard shows non-
linear error. In SLEC the entire axis travel is divided into user
defined segments. The error in each segment is compensated
with a single correction factor. Each correction point is measured
with respect to the starting point. This starting point is usually set
close to the end of the scale. This starting point can coincide with
the absolute datum point or Home reference.
2
21
DRO mode press { } key to enter Edge detector calibration.
Following screen will be displayed.
A
The Setup depends on the magnification and the light intensity.
DRO allows the user to save up to 10 magnifications. These
magnifications can be recalled any time when the magnification
on the machine is changed. Following soft keys are available on
this screen:
Using this option a new magnification setup can be saved.
The user is asked to enter the name of magnification level
by displaying the data entry screen. On entering the name
the DRO displays FO setup.
Open the selected magnification setup. The DRO will
display the Setup for the selected magnification as shown
below:
Exit from the setup.
Delete the selected magnification setup.
Use the setup parameter for the selected magnification.
Using this the selected magnification level can be
renamed.
A
Following are the FO Setup parameters and their significance
:
