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 barcode due to
specular reflection.
Change the BHT reading angle and try again.
Distance from
barcode
The barcode may not be read if it is too close
to or too far from the BHT reading window,
even when the barcode is within the read
area.
Move the BHT slowly away from the barcode and try again.
Bar code reading is possible from a maximum distance* of 62
cm.
* Under the following conditions:
•
Ambient illuminance: 500Lux(fluorescent lamp)
•
ITF conforming to the UPC Shipping Container Code
•
PCS value: 0.9 or more
•
Minimum narrow bar width: 1.2 mm min.
Barcode surface
curvature
The barcode may not be read if its surface
is extremely curved.
Read the barcode at the center of the barcode reading
window.
Barcode surface
dirt
The barcode may not be read 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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Summary of Contents for BHT-805B
Page 1: ...Barcode Handy Terminal BHT 805B User s Manual...
Page 23: ...BHT 805B 10...
Page 157: ...BHT 805B 144...
