DVG-5402G/GF  Wireless AC1200 Wave 2 MU-MIMO Dual
Band Gigabit Router with Fiber WAN Port, 3G/LTE Support,
2 FXS Ports, and USB Port
User Manual
Configuring via Web-based Interface
Parameter Description
Channel
The wireless channel number.
To  select   a  channel   manually,  left-click;   in  the  opened   window,
select a channel and click the SAVE button. The action is available,
when the Select channel automatically switch is moved to the
left.
To make the router select the currently least loaded channel, click
the  Refresh icon ( ). The icon is displayed, when the  Select
channel automatically switch is moved to the right.
Enable periodic
scanning
Move  the   switch   to  the   right  to   let  the   router  search  for   a  free
channel in certain periods of time. When the switch is moved to the
right, the Scanning period field is available for editing. 
Scanning period
Specify a period of time (in seconds) after which the router rescans
channels.
When you have configured the parameters, click the APPLY button.
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