User's Manual

Altum AC 600 User Manual LT-9064 Rev A 27
Advanced Settings
Distance Optimization (Auto-ACK Timeout):
Determines the distance of the connected station
from the AP and automatically adjusts the ACK
timeout. This is disabled(unchecked) by default. If the
stations are positioned over a wide area at different
distances from the AP (typically in PmP), it is
recommended to disable this option to prevent the
ACK timeout from fluctuating widely.
For Point to Point (PtP) links it is recommended to
check the box to optimize the timeout period
Distance (meters): Specifies the distance between the
AP and the station, if the previous option is
unchecked. Min: 300, Max: 12000 (80MHz), 24000
(40MHz), 48000 (20MHz). This value may be set to
slightly more than the physical distance between the
AP and the farthest station.
Chainmask Selection: Sets the antenna port selection
on the radio. For example, 2x2 means that 2 antennas
are being used for transmit and receive.
Note: The following options are for the device
operating as an access point (AP).
Beacon Interval: Specifies the interval between
beacon transmissions by the AP, in milliseconds. A
beacon is a frame broadcast by the AP to synchronize
the wireless network. For the multiple VAP case, the
beacons are transmitted evenly within this interval.
Thus, if four VAPs are created and the beacon interval
is 200 ms, a beacon will be transmitted from the radio
portion every 50 ms, from each VAP in a round-robin
fashion. The default value of the interval is 100 ms.
Adaptive noise immunity: Controls radio sensitivity in
the face of noise sources. Adaptive noise immunity
allows the AP to reject spurs and non-WLAN noise. An
advantage is that the AP would have to spend less
time decoding the signal, resulting in lower packet
loss rate.
Dynamic channel selection: Automatically switches
channel to avoid interference. Dynamic channel
selection is feature to detect and avoid continuous
wave (CW) interference. CW interference or spurs
cause the noise floor to be high. This stops
transmissions as well as causes a high dropped packet
rate. The noise floor is monitored by the calibration
logic. When the noise floor is above a threshold, the
AP is performs an automatic channel selection. It
would disconnect from the stations (it would already
have due to the interference) and move to a new
channel. The stations are expected to re-associate
with the AP on their own.
5.4.2 Interface Configuration
The Interface Configuration section contains the
section tabs for General Setup, Wireless Security,
MAC-Filter, and Advanced Settings.
General Setup
Mode: Selects whether the device is operating as an
Access Point (AP) or a Station. Other options are
Access Point WDS and Station WDS.
Figure 47: The Wifi Interface Configuration section.
Figure 46: Advanced Settings for the Wifi Device
Configuration.