Users Manual - Warranty Life

5.3 Auto Sensing Mode—Automatic Detection of Labels
In auto sensing mode, bringing a bar code label within the scan range of the reading window turns on the illumination
LED and starts the scanner reading the bar code. No trigger switch operation is required. Use this mode when the
scanner is stationary to a stand and a bar code label is moved.
The illumination LED comes on when you bring a bar code label within the designated range or move a bar code label
within the same range. The LED goes off when a bar code label is moved away from the range or stays within the
range without move for approx. 5 seconds.
The scanner offers a choice of three sensitivity levels for responding to bar codes. Switch to a higher sensitivity level
if the illumination LED will not come on when a bar code is brought into the range, for example.
Note: Even if you do not bring a bar code label within the scan range, the illumination LED may come on when
the ambient level of light changes or any shadows move within the scan range.
Note: Given below is a guide for scanning EAN-13 symbols in auto sensing mode under these conditions: At the
center of the effective scan range and at the ambient illuminance of 500 lux or higher.
GT10B-SM/GT11B-SM: Scan distance of approx. 21 cm (8.27")
GT10B-LM: Scan distance of approx. 40 cm (15.75")
Note: It is sometimes necessary to vary the scanning angle or distance to eliminate reflections of the illumination
and ambient light off highly reflective labels.
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