Denso BHT-200QW Bedienungsanleitung Seite 41

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25
Barcode Handy Terminal
When unable to successfully read barcodes…
Cause Countermeasure
Specular
reflection
When the light is focused on the printed
surface of the barcode from directly above,
the BHT may not read the code due to
specular reflection.
Change the BHT reading angle and try again.
Distance from
barcode
Reading may be unsuccessful if the
barcode is wider than the barcode reading
window.
Move the BHT slowly toward or away from the barcode
and try again.
Barcode reading is possible from a maximum distance* of
32 cm.
* Under the following conditions:
- Ambient illuminance: 500 Lx. (fluorescent lamp)
- ITF conforming to the UPC Shipping Container Code
- PCS value: min. 0.9
- Narrow bar width: min. 1.0 mm
Barcode surface
curvature
The barcode may not be read if surface is
extremely curved.
Read the barcode at the center of the barcode reading
window.
Barcode surface
dirt
The barcode may not be read if its surface
is dirty.
Wipe the dirt from the barcode and try again.
Barcode reading
window dirt
The barcode may not be read if the
barcode reading window is dirty.
Blow any dust away with an airbrush, and then gently
wipe the reading window with a cotton swab or similar soft
object.
Direct sunlight,
ambient light
Barcode reading may be adversely
affected by direct sunlight or the
brightness of the surrounding light.
Read the barcode away from direct sunlight. Adjust the
brightness of the surrounding light when reading indoors.
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