19
In
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・
Wireless LAN (WLAN) exchanges information using
radio waves, and allows you to freely establish LAN
connection if you are within an area where radio wave
reaches. On the other side, if you communicate
without appropriate security settings,
communications may be intercepted or hacked by
malicious parties. It is recommended to make
necessary security settings on your judgement and
responsibility.
・
Wireless LAN
Do not use Wireless LAN in a place where magnetized
by electric products, AV, OA equipment, etc. or where
electromagnetic wave is generated.
- If magnetism or electrostatic noise affects FOMA
terminal, noise may be increased or communication
may not be available (especially when using
microwave oven, it may affect the terminal).
- Using near TV or radio may cause poor reception or TV
screen may be blurred.
- When multiple wireless LAN access points exist near
FOMA terminal and they use the same channel, search
may not be performed correctly.
・
Frequency bands
Frequency bands for WLAN devices are written on
battery pack insert section of phone. Label description
are as follows.
a
2.4 : Radio equipment that uses the 2400 MHz band.
b
DS : The modulation is the DS-SS method.
c
OF : The modulation is the OFDM method.
d
4 : The expected interference distance is 40 m or
shorter.
e
: All bandwidths between 2400 MHz
and 2483.5 MHz are used, and the bandwidth used by
mobile object identification devices can be avoided.
Available channel varies by countries. To use WLAN
overseas, check the conditions such as available
frequency, regulation, etc. for the country.
To use in airplane, confirm with airline company in
advance.
Cautions on using 2.4GHz devices
In the bandwidth used by WLAN devices, in addition to
home electric appliances such as a microwave oven and
industrial/scientific/medical devices, in-plant radio
stations for identification of mobile objects used in
production lines of a factory (a license is required),
specified low power radio stations (a license is not
required), or amateur radio stations (a license is
required) can be in operation.
1. Before using this device, confirm that in-plant radio
stations for identification of mobile objects, specified
low power radio stations or amateur radio stations
are not in operation in your neighborhood.
2. If this device generates harmful radio wave
interference against in-plant radio stations for
identification of mobile objects, change the using
frequency promptly or stop using wireless LAN
function, and contact "General Inquiries" on the last
page of this manual, then consult about treatment for
prevention of the interference (for example,
installation of partitions etc.).
3. If this device generates harmful radio wave
interference against in-plant radio stations for
identification of mobile objects or amateur radio
stations, or if any trouble, contact "General Inquiries"
on the last page of this manual.
Wireless LAN (WLAN)
2.4DS/OF4
a b
c
e
d
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