Canon CXDI-80C Service Manual page 22

*1
: DFS (Dynamic Frequency Selection): A function that operates when a military or weather radar signal is detected whereby the access point changes to
another channel, relinquishing the original channel to the radar signal. Required by W53 and W56. Channel switching requires several tens of seconds to
complete.
*2
: TPC (Transmission Power Control): A function that automatically adjust the waveform output as necessary in order to maintain communication between
the access point and the wireless terminal device.
*3
: Taiwan W53 is exceptional in not requiring DFS.
*4
: The CXDI-80C product specifications do not support DFS, so channels W53 and W56 (which require DFS) are not available for use.
*5
: South Korea allows use of W58 up to channel 161.
*6
: Refer to the following regarding channel combinations that can be used for channel bonding with HT40 (40 MHz).
Reference: Notes on radio frequency, and Available areas and restrictions are listed in the User's Manual of the CXDI-80C Wireless.
Primary channel Secondary
channel offset
36CH
40CH
44CH
48CH
Not listed as W53 is not supported.
Not listed as W56 is not supported.
149CH
153CH
157CH
161CH
As indicated above, in the 5 GHz band the channels in the same frequency band that can be used without interference when HT40 is used are as
follows: 2 channels in HT20 and 1 channel in HT40 for W52, 3 channels in HT20 and 1 channel in HT40 for W58.
Figure 0-1 Channels in 5 GHz band
Secondary
channel
above 40CH
below 36CH
above 48CH
below 44CH
above 153CH
below 149CH
above 161CH
below 157CH
1 1 . . O O v v e e r r v v i i e e w w
Channels within the same frequency band
that can be used simultaneously without
interference
HT20:44,48CH
HT40:44-48CH
HT20:36,40CH
HT40:36-40CH
HT20:157,161,165CH
HT40:157-161CH
HT20:149,153,165CH
HT40:149-153CH
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