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No. 99MBC032A
5.3 Applied Measurement
Perform measurement according to the conditions set.
This section gives example operations for a better understanding of the versatile functions of
this instrument.
For information about actual setup methods refer to Section 3.4, “Outline of Key Opera-
tions”, Section 4.1, “Basic Setup”, and Section 4.5, “Setting up the Functions”.
5.3.1 OD measurement of a precision-machined workpiece
Perform a single-run measurement and make a GO/NG judgment of the workpiece OD.
D
Segment 1
Segment 2
Segment 3
Laser scan direction
• Suppose that D = 10
± 0.002
mm.
• Set the following:
1. Segment = 2
2. Number of scans for averaging = 512 or more
For precision measurement set a large value.
3. GO/NG criteria
a. Lower limit value = 9.998 mm
b. Upper limit value = 10.00201 mm
(If 10.002 mm is accepted as GO, add the resolution to this value. This also applies
to the following examples.)
• Measurement
PROG
BUSY
RUN
+NG
GO
-NG
1. Perform measurement in the ready state.
The GO/NG LEDs and RUN LED are off, and the
BUSY LED turns on for each measurement.
PROG
BUSY
RUN
+NG
GO
-NG
2. Start a single-run measurement. “ ”
will be displayed in the lower section of the display
unit. Also, the RUN LED lights and stays lit.
PROG
BUSY
RUN
+NG
GO
-NG
3. After the set measurement interval (approximately
0.32 seconds, for 512 times averaging), the BUSY
LED lights for a moment, then the measured data is
latched on the display.
The measured data is subjected to GO/NG judgment,
and the result will be outputted on the GO/NG
LEDs. It will also be, depending on the setup,
outputted to the RS-232C (printer) and Digimatic
Code Output Unit.
TIP About the number of scans for averaging and repeatability
If high accuracy is required, select the largest number of scans for averaging pos-
sible.
In general, doubling the number of scans for averaging improves repeatability by 1.4
times.
