Siemens SCALANCE W1780 Configuration Manual page 252

Configuring with Web Based Management
6.6 "Interfaces" menu
Description
Table 1 has the following columns:
● Radio
Shows the available WLAN interfaces.
● Channel
Specify the main channel.
If you want the access point to search for a free channel itself, use "Auto". The selection of
channels used by an access point when establishing a wireless cell can be restricted. To do
this, select the "Use Allowed Channels only" check box on the "Allowed Channels" page.
.If you want to use a fixed channel, select the required channel from the drop-down list.
Note
Channel spacing with WLAN interfaces
If you use a second WLAN interface, make sure that you have adequate channel spacing.
● Alternative DFS Channel
If you have enabled the "DFS" function, on the "Basic" page, specify the alternative channel
here. If you want the access point to search for a free channel itself, use "Auto".
If a competing radar signal was detected both on the main and alternative channel, the
access point automatically searches for a free channel.
If you want to use a fixed channel, select the required channel from the drop-down list.
● Selected Channels
– Channel number (frequency) or Auto
– At 80 MHz only and with fixed channel: Channel range
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When a fixed channel is set for "Channel", this channel is shown including frequency.
Four channels are required for the 80 MHz channel bandwidth in the corresponding
channel range. The channel range consists of the channel configured for "Channel" and
the three next channels.
SCALANCE W1780/W1740 according to IEEE 802.11ac Web Based Management
Configuration Manual, 11/2019, C79000-G8976-C485-03