Contec FX-DS110-APL, User Manual, Page: 17 / 69

Overview
FX-DS110-APL
9
Multi-channel Operation
By changing channels on adjacent access points, it is possible to
obtain higher throughput per wireless terminal than when is
channels are not changed, even when the number of wireless
terminals is increased.
The 2.4G band (2400 to 2483.5 MHz) in which this product
operates is subdivided into 13 channels, numbered 1 to 13, by IEEE
standard 802.11. Because each frequency has sidebands around its
central frequency, sidebands on adjacent channels overlap.
Overlapping frequencies can adversely affect communications by
interference with each other's transmissions.
Refer to Figure 2.3 when selecting channels, to ensure that
frequency bands do not overlap.
The maximum number of channels that can be used simultaneously
without interference is four, by using a combination of channels 1,
6, and 11. Channel numbers can be set from 1 to 13 using utility
software.
Two wireless terminals on the same network cannot use the same
frequency.
Network
AP1
POWER
WRX
WL INK
LIN K
RX
AP2
POWER
WRX
WLINK
LIN K
RX
POWER
WRX
WLINK
LIN K
RX
POWER
WRX
WLINK
LIN K
RX
POWER
WRX
WLINK
LI NK
RX
PO WE R
WRX
WLINK
LINK
RX
Channel 1 Channel 6
PO WE R
W RX
WLIN K
LIN K
RX
PO W ER
WR X
WLINK
LINK
R X
Figure 2.2. Multi-channel Operation