Denso BHT-7500W Barcode Reader User Manual


 
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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 bar code becomes exces-
sively strong. This can easily happen when the re-
flecting surface is polished or covered with vinyl.)
Keep the BHT at a distance from a target bar code so that the bar code comes
within approx. 90% of the laser scanning range (line length).
The BHT can read bar codes at a maximum distance of 56 cm (22.0")** from the
bar-code reading window.
**Under the following conditions:
- Ambient illuminance: 500 x (Xenon lamp)
- Code 39
- Reflection intensity: 85% min. for white and 5% max. for black
- Minimum narrow bar width: 1.4 mm min. (55.1 mils min.)
The bar code reading procedure may differ depending upon the application
used, so follow the application's manual.
1.1 Reading Bar Codes
Turn on the BHT power, bring the bar-code reading window to the bar code to be
scanned, and press the trigger switch. The BHT emits a laser light to scan the bar
code.
When the BHT has read the bar code successfully, the indicator LED will illuminate in
green.
* The trigger switch function is
assigned to both of the M3 and
M4 keys by default.
Bar code scanning
range covered by
the laser light
Trigger switch (M3 key)*
PW key
Trigger switch
(M4 key)*
Indicator LED
Max. 56 cm
(22.0")**