Contec Flexlan PC Card FX-DS-110-PCC - Manual (Page 23)

Installation of a driver
FX-DS110-PCC
16
Obstacles blocking radio waves include metal walls and walls
containing a metal firewall.
RSSI (Receive Signal Strength Indication) utility is available as a
means of knowing the signal strength of an incoming radio wave.
Placing this product for a greater RSSI value makes the
communication state more stable. If the RSSI value is small and
slightly moving the position of the product does not increase the
RSSI value, it indicates radio wave attenuation either to the distance
or by an obstacle.
Note!
Pay attention to radio interference.
Radio interference with this product indicates any disturbance to
reception, caused by that radio wave in the frequency band of this
product which is generated outside the local network. Listed
below are major examples of sources of interfering radio waves
generated in general environments excluding plants and factories:
- 2.4 GHz band wireless network
- Other sources
- Microwave ovens
- Security gates
(Installed near the entrances of some department stores and
rental shops)
- Copiers
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.
Radio interference by a wireless network can be removed by
changing the channel used. Note, also, that dividing the same
network into groups different in channel may increase the data rate.