Microscan MS-4X Manual de usuario descargar pdf (Pagina 119)

Chapter 6 Autocalibration

MS-880 Industrial Long Range Scanner User’s Manual 6-5

6–Autocalibration

Advanced ESP Autocalibration Features

In the advanced tab in the Autocalibration menu you can constrain the scan width of

the scan beam with Laser Framing and set up the rules the scanner will follow when

making the first pass of the autocalibration procedure.

Laser Framing

Sets the length of time the laser is ON during each scan so that only a selected por-

tion of the scan width is effectively scanned.

To adjust the scan width:

1. First click on Framing Status.

2. Click on the pointers in Laser Off and

Laser On to adjust the shape of your

scan beam width to match only the

area in which your bar code symbol

will appear.

Focus Stepping

After you’ve used autocalibration a time or

two and observed the progress of the first

and second passes in the graph and table

in the Results tab, you will sense the

relationship between focus position and

the distance to the bar code symbol. See

figure 6-7 for a table on this.

To improve the speed and accuracy of your

autocalibration setup:

1. Click on the Advanced tab in the

Autocalibration menu.

2. If Auto Range is enabled, click on it to

disable it.

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 label to correspond to a Start-

ing Focus Position of 6, enter 5 or 4 to be certain of not missing the peak per-

formance distance.

4. Enter a value in Focus Step Size.

This is the number of focus increments that will be stepped through during the

first autocalibration pass. The range is 2 to 5. The higher values will result in

fewer readings during the first pass but will increase the risk of missing the peak

performance position.

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Microscan MS-4X Manual de usuario Pagina 119