Datalogic DM3610, Reference Manual, Page: 134 / 157

TWO-HEAD DIMENSIONING SYSTEM REFERENCE MANUAL
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5
5.5 DYNAMIC CALIBRATION
After you have set up the dimensioning settings and calibration in the DC3000 User interface,
you must check the accuracy of the system by running test boxes through the system.
Dimensions returned when a box is run through the system must fall below the outside
tolerance required by your application.
Example: If your application calls for a tolerance of 0.2 inches in Width, Length, or Height,
you must calibrate your system until the values returned fall below 0.2 inches. In other words,
a value of +0.19 inches may be acceptable, while a value of 0.21 is not.
To Dynamically Calibrate the Dimensioning System:
1. If you do not already have it running, open the
DC3000 User Interface in a browser and
log on as explained previously.
2. From the menu tree of the under
Diagnostics , select Log Viewer . The Log Viewer
window opens.
3. Turn on the conveyor and run a test box.
4. Check the results in
Diagnostics | Log Viewer.
The MH BBOX FINAL results show the calculated data from the scan information for
HEAD1 and HEAD2. This number should match the length, width and height of the test
box (within the system tolerance). If the
length doesn’t fall within tolerances:

Check the length results of the individual heads. These are shown in BOUNDING
BOX (0) (HEAD1) and BOUNDING BOX (1) (HEAD2). If the length of both heads is
outside of tolerance, adjust the Tach Scale Factor in
Modify Settings |
Tach/Trigger/Transmit in small increments, and run test boxes until the length falls
within system tolerances. If only one of the heads is out of tolerance, check the
physical mounting of the dimensioners.
For example: If you notice that the length (in the direction of travel) of your package
is too short and you have a tachometer pulse of 16 pulses per inch, enter a Tach
Scale Factor of less than 1.0. If you enter 0.97 your effective pulses per inch become
15.52 pulses per inch. If, however, your package is too long, enter Tach Scale Factor
greater than 1.0. Adjust by small increments.