Canon AX-C4343W, Техническая документация

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Appendix — Technical description —
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5.1.5.2 Guidelines for operations with a multiple DR wireless systems
Since, in the case of a multiple number of DR wireless systems, the probability that more
than one image transfer will take place at the same time is considered to be low, set all the
DR wireless systems to the same channel by following the flow shown in Fig. 1 when
operation will not call for images to be transferred at the same time or when delays in
image transfer are permissible. However, in cases where multiple DR wireless systems are
to be installed in proximity and images tend to be transferred at the same time, consider
each DR wireless system as an existing wireless LAN system and, following the sequence
shown in Fig. 1, set different channels for each of the DR wireless system as far as this is
possible.
*1: In the 2.4 GHz band it is not possible to specify two non-interfering channels in HT40.
*2: In the 5 GHz band the channel pairs are predetermined and there is no way to set the same primary
channel only. In contrast, in the 2.4 GHz band it is possible to specify either of two channels for each
primary channel, such as 6CH below 2CH or 6CH above 10CH.
5.1.5.3 Checkpoints when setting the channels
5.1.5.3.1 Checkpoints when checking out existing wireless LAN systems
When checking out the conditions under which existing wireless LAN systems are being used to
install the systems, it is possible that systems are available under which the channels are
automatically set rather than having fixed channels for the existing system. For this reason, the
administrator of the facility concerned who is conversant with the conditions under which the
wireless LAN systems are used should be consulted. Care is required since if only the signal
conditions during installation have been measured, the automatic setting of the channels may
cause channels which are different from the ones identified during installation to be used. If
possible, in setting the DR wireless system channels, it is desirable to ask that fixed channels be
used for the existing wireless LAN systems and that the channels be set in such a way that no
parts of the frequencies used will overlap.
5.1.5.3.2 Checkpoints concerning the effects on existing wireless LAN systems
When a DR wireless system and an existing wireless LAN system share the same
frequency, care is required since the wireless communication of the DR wireless system
will adversely affect the existing wireless LAN system. If, for instance, a DR wireless
system shares the same channels with a device for which the communication timing is
critical or with a device requiring a data rate above a specific level, the image transfer of
the DR wireless system may interfere with the normal operation of the other device.
Particular care is required when the frequencies used overlap in part because the resulting
effects may be significant.
Existing wireless LAN system
HT40 HT20
DR wire
les
s
sys
te
m
HT40
(1) Set channels that do not interfere
with each other.
*1
(2) Use the same setting for the primary
and secondary channels.
(3) Use the same settings for the
primary channel only.
*2
(1) Set channels that do not interfere
with each other.
(2) Use the same setting for the primary
channel as the channel setting of the
other wireless LAN system.
HT20
(1) Set channels that do not interfere
with each other.
(2) Use the same channel setting as the
primary channel setting of the other
wireless LAN system.
(1) Set channels that do not interfere
with each other.
(2) Use the same channel setting.
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