Motorola RS409 Betriebsanweisung PDF herunterladen (Seite 60)

3 - 4 WT41N0 User Guide

Figure 3-4

Pick List Mode with Multiple Bar Codes

3. Release the scan button.

Scanning Considerations

Typically, scanning is a simple matter of aim, scan/decode and a few quick trial efforts master it. However, two

important considerations can be used to optimize any scanning performance:

•

Range

Any scanning device decodes well over a particular working range — minimum and maximum distances

from the bar code. This range varies according to bar code density and scanning device optics.

Scanning within range brings quick and constant decodes; scanning too close or too far away prevents

decodes. Move the scanner closer and further away to find the right working range for the bar codes being

scanned. However, the situation is complicated by the availability of various integrated scanning modules.

The best way to specify the appropriate working range per bar code density is through a chart called a

decode zone for each scan module. A decode zone simply plots working range as a function of minimum

element widths of bar code symbols. Refer to the WT41N0 Integrator Guide for decode zones for the

optional data capture options.

•

Angle

Scanning angle is important for promoting quick decodes. When laser beams reflect directly back into the

scanner from the bar code, this specular reflection can “blind” the scanner.

To avoid this, scan the bar code so that the beam does not bounce directly back. But don’t scan at too

sharp an angle; the scanner needs to collect scattered reflections from the scan to make a successful

decode. Practice quickly shows what tolerances to work within.

Setting Up the RS507 Hands-free Imager

An RS507 Hands-free Imager can be used with the WT41N0 to capture bar code data.

To set up the wearable terminal and RS507:

1. Enable DataWedge to use the Bluetooth SSI Scanner Driver. See Enable DataWedge on page 3-5.

2. Select Start > Programs > MotoBTUI.

3. Select Pairing Barcode.

NOTE Imager decoding usually occurs instantaneously. The RS507 repeats the steps required to take a digital

picture (image) of a poor or difficult bar code as long as the scan button remains pressed.

NOTE Contact the Motorola Solutions Global Support Center if chronic scanning difficulties develop. Decoding of

properly printed bar codes should be quick and effortless.

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Motorola RS409 Betriebsanweisung Seite 60