5. Wireless Link Mode and Wireless LAN Function
FXA3000 Series
75
Pay attention to radio interference.
Radio interference means the reception of radio waves in the frequency band used by this network that are
generated by equipment that is not part of the network to which this product belongs. Listed below are
major examples of sources of interfering radio waves generated in general environments excluding plants
and factories
:
- 5GHz (if using IEEE 802.11n draft standard or IEEE 802.11a standard in the 5GHz band) or 2.4GHz
(if using IEEE 802.11n draft standard or IEEE 802.11b/IEEE 802.11g standard in the 2.4GHz band)
band wireless networks that do not comply with IEEE802.11.
- If using IEEE 802.11b/IEEE 802.11g standard in the 2.4GHz band. Ex. microwave ovens, security
gates (installed near the entrances of some department stores and rental shops), copiers which give off the
2.4GHz electric waves.
Where there is a large metal wall such as in a warehouse, the radio wave generated from the sender is
reflected, resulting in those radio waves reaching the receiver which have taken different routes (thereby
phase-shifted). This has the similar effect as the generation of interfering radio waves, possibly slowing
down data transfer.
Most of the interfering radio wave sources other than wireless networks have local and/or temporary
effects, not so affecting network performance. Rarely, however, the date rate is reduced and, in the
worst case, communication is disabled temporarily. In such cases, change the location of this product
and the channel used for communication. This may solve the problem.