User's Manual

3
Wireless Communication
The BL-N90 Series contains an internal wireless function based on Bluetooth wireless technology.
b Precautions for wireless communication
• Using the BL-N90 Series near wireless LAN equipment that operates in the same frequency band may
cause radio interference, reduce the communication speed, and make communication impossible.
• Using the BL-N90 Series near equipment that operates in the same frequency band, such as microwave
ovens, industrial heaters, or high frequency medical equipment, may make communication impossible.
• The BL-N90 Series may not be able to communicate in the following types of locations.
– Locations close to metallic substances or with large amounts of metallic powder
– Locations surrounded by metallic walls
– Locations that are subject to strong vibrations
• The guideline for communication distance is a visible range of about 10 m, but there are
some environments where communication is not possible even within this range.Make
sure to check communication before installation.
• The BL-N90 Series employs the working frequency band used by premise radio stations
for identification of moving objects (radio station license is required) and specified low-
power radio stations (radio station license is not required) that are used by production
lines for factories that make industrial, chemical, or medical equipment.
• Before using the BL-N90 Series, confirm that premise radio stations for identification of
moving objects and specified low-power radio stations are not operated nearby.
•
In the unlikely event that waves from the BL-N90 Series cause radio interference with
premise radio stations for identification of moving objects, stop the equipment and contact
KEYENCE at the number below. Our representatives can help provide more information
about methods for avoiding interference, such as the installation of a partition.
• If other problems occur, such as waves from the BL-N90 Series causing radio interference with specified
low power radio stations for identification of moving object, contact KEYENCE at the number below.
Contact: KEYENCE, TEL [phone]
2.4 :
Indicates that the wireless device is used in a 2.4 GHz band.
FH : Indicates that the modulation system is FH-SS.
1: Indicates the estimated interference distance ( ≤ 10 m).
: Indicates that the equipment uses the full
bandwidth and identification of moving
object equipment area cannot be avoided.
CAUTION
Disassembly or modification of the BL-N90 Series is prohibited under the
Japanese Electrical Appliance and Material Safety Law (DENAN). Do NOT
disassemble or modify the product.The BLN90 Series is specified as specified
low power radio equipment according to DENAN, and the appropriate
certification has been obtained
2.4 FH 1