KEYENCE BL-N90 Series - Manual (Page 5)

3
Handling the BL-N90
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Notes about the default number of digits for reading
The number of digits of barcode for reading is set to three digits or more by default to
prevent misreading.
How to count the digits varies depending on the barcode type, but the minimum number
of digits for reading by default is as follows.
If you read a barcode with less than three digits, change the setting with the Limit read
digits function.
WARNING
• When recharging the BL-N90 with BL-N9R, BL-N9UB, or BL-N9V, make sure
to check whether foreign materials have entered the charging terminal. The
presence of foreign materials may generate high heat or ignition, which may
cause fires.
• Check whether dust covers the power plug of the AC adapter that connects to
BL-N9R, BL-N9UB, or BL-N9V, and clean it regularly. There is a danger that a
fire will start due to tracking. Also, remove the plug from the electrical outlet
when not using the BL-N90 Series for a long period of time.
• Always use the included AC adapter with BL-N9R, BL-N9UB, or BL-N9V.
Using another AC adapter may cause fire, electrical shock, or damage to the
equipment.
CAUTION
• Do not modify or disassemble the BL-N90 Series. Doing so may cause damage.
• The BL-N90 Series is a precision instrument. Dropping it or applying strong
shock may cause damage to the instrument. Take appropriate precautions
when transporting the BL-N90 Series.
• Do not place the BL-N90 Series in locations with large amounts of moisture or
dust. Also, do not leave small metallic objects, such as paperclips, near the
instrument. Doing so may cause fire or damage.
• Do not use the BL-N90 Series in the following locations. Usage in these
locations may cause damage or malfunctions.
– Locations where the ambient temperature exceeds the rated range.
– Locations where the ambient humidity exceeds the rated range.
– Locations exposed to direct sunlight.
– Locations where temperatures may increase greatly, such as within a
vehicle with the windows closed.
– Locations where sharp temperature changes may cause condensation.
– Locations with corrosive or flammable gases.
– Locations with a large amount of dust, salt, iron, or greasy fumes.
– Locations that are directly affected by vibrations or shock.
– Locations where the unit may be splashed by water, oil, or chemicals.
– Locations with strong magnetic or electrical fields.
Barcode type Example of barcode with three digits or more
CODE39 *123*
Codabar (NW-7) A1A
ITF 1234
CODE128 123