D-Link DIR-620 User Manual page 153

DIR-620 Wireless N300 Router with 3G/CDMA/LTE Support
and USB Port
User Manual
Parameter
TX Power
Drop multicast
Bandwidth
Short GI
When you have configured the parameters, click the Apply button.
The transmit power (in percentage terms) of the router.
Select the checkbox to disable multicasting for the router's WLAN.
Deselect the checkbox to enable multicasting from WAN
connections for which the Enable IGMP Multicast checkbox is
selected.
The channel bandwidth for 802.11n devices.
20MHz: 802.11n devices operate at 20MHz channels.
40MHz: 802.11n devices operate at 40MHz channels.
20/40MHz -: 802.11n devices operate at 20MHz and 40MHz
channels (the channel is combined with the previous adjacent
channel).
20/40MHz +: 802.11n devices operate at 20MHz and 40MHz
channels (the channel is combined with the next adjacent channel).
Guard interval (in nanoseconds). This parameter defines the interval
between symbols transmitted when the router is communicating to
wireless devices.
Enable: the router uses the 400 ns short guard interval. For the
wireless network operating modes which support 802.11n standard
only (see the value of the Wireless mode drop-down list on the
Wi-Fi / Basic settings page).
Disable: the router uses the 800 ns standard guard interval.
Page 153 of 225
Configuring via Web-based Interface
Description