Denso Wave DWBT001 用户手册

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页码 5
Reading 2D Codes and Bar Codes
• The markers show the left-to-right scanning range. When the scanning
distance is 8.5 to 9.5 cm (3.3 to 3.7 inches), they indicate almost the center
of the up-down scanner’s view. If the distance is out of the range, those
markers will deviate from the center.
• If the BHT fails to read due to specular effects
or other factors, change the scanning angle of
the reading window or the distance from codes
as shown at right, and try it again.  (Specular ef-
fects occur when the reflection of the light from
the code becomes excessively strong.  This can
easily happen when the reflecting surface is
polished or covered with vinyl.)
• The code reading procedure may differ depending upon the application
used, so follow the application's manual.
Turn the BHT power on, bring the reading window to the target code, and
press the trigger switch. The BHT turns three marker LEDs on to indicate the
scanning range and the illumination LED to scan the code. Keep the BHT sta-
tionary in a position where the target code lies between the right and left
markers and the center marker comes to the center of the target code.
Hold the reading window 4 to 14 cm (1.6 to 5.5 inches) away from codes to be
scanned.
When the BHT has read the code successfully, the indicator LED will illuminate
in green and the markers will go off.
Trigger switch
(M3 key)
PW key
Trigger switch
(M4 key)
4 to 14 cm
(1.6" to 5.5")
Markers
Indicator LED
Illuminates in green when the BHT
has successfully read the code.
Touch screen LCD
Shows the scanned image of a code
lying inside the scanner’s view if the
view finder is set to ON.