Denso BHT-825QW Instrukcja Użytkownika Pobierz pdf (Strona 42)

2D Code Handy Terminal

When unable to successfully read codes…

Cause Countermeasure

Specular

reflection

When the light is focused on the printed

surface of the code from directly above,

the BHT may not read the code due to

specular reflection.

Change the BHT reading angle and try again.

Distance from

code

The code may not be read if it is too close to

or too far from the BHT reading window.

Move the BHT slowly toward of away from the code and try

again.

Use the display range of the guide marker as a guide. The

valid reading range is approx. 60x38 mm if the reading

distance is 90 mm.

Code surface

curvature

The code may not be read if surface is

extremely curved.

Flatten the label surface and read it again.

Code surface

dirt

The code may not be read if its surface is

dirty.

Wipe the dirt from the code and try again.

Code reading

window dirt

The code may not be read if the code

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

Code reading may be adversely affected

by direct sunlight or the brightness of the

surrounding light.

Read the code away from direct sunlight. Adjust the

brightness of the surrounding light when reading indoors.

Guide marker

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 252 253

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