Contents/Precautions
21
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Wireless LAN (WLAN)
・
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 judgment 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 the 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 the
terminal and they use the same channel, search may not
be performed correctly.
・
Frequency bands
Frequency bands used by the terminal wireless LAN
function are as below.
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 channels vary 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.
When docomo nano UIM card is not inserted or when you
are out of service area, channels 12, 13 of 2.4 GHz band and
channels between 120 and 128 of 5 GHz band are not
available regardless of whether you are in Japan or abroad.
2.4DS/OF4
a b
c
e
d
