Microscan MS-890, User Manual

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MS-890 Industrial Automation Scanner User Manual
9-15
Calibration
Starting Focus Position
After you’ve used calibration and observed the progress of the first and second passes in
the graph and table in the Results tab, you should sense a relationship between focus
position and the distance to the symbol.
Improving the speed and accuracy of focus position setup:
1. Click on the
Advanced
tab in the
Calibration
menu.
2. If Auto Range is enabled, click on it to disable.
3. From previous results, estimate the value of Starting Focus Position and drop
down one or two positions.
For example, if you estimate the distance to your symbol to correspond to a St
arting
Focus Position of 6 , enter 5 or 4 to be certain of not missing the peak performance
distance.
4. Click the Calibrate button to start calibration.
5. Examining the read rates in the
Results
graph following calibration.
Usage:
Starting Focus Position can improve focus acquisition speed during calibration
when the approximate range of the symbol is known.
Definition: With
Auto Range
enabled, the scanner will begin the calibration routine at
the focal range set in
Starting Focus Position
.
Serial Cmd: < K510, auto range, starting focus position ,focus step size >
Default: 0
Options: 0 to 40