2
•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 win-
dow or the distance from codes as shown at right, and
try it again. (Specular effects occur when the reflec-
tion 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.
1.1 Reading 2D Codes and Bar Codes

BHT-100Q

Turn the BHT power on, bring the reading window to the target code, and press the
trigger switch. The BHT-100Q turns three marker LEDs on to indicate the scanning
range and the illumination LED to scan the code. Keep the BHT stationary 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.