19
Using the Configuration Menu (continued)
Advanced > Performance 
Preamble Type-
Select 
Short
or 
Long Preamble. 
The Preamble defines the length 
of the CRC block for communication between the wireless access 
point and the roaming wireless network adapters. (Cyclic Redun-
dancy Check is a common technique for detecting data transmission 
errors.) 
Long
is the default setting. Note: High network traffic areas 
should use the shorter preamble type.
Beacon Interval-
Beacons are packets sent by an Access Point to synchronize a 
wireless network. Specify a value. 100 is the default setting and is 
recommended. 
RTS Threshold-
This value should remain at its default setting of 2432. If inconsistent 
data flow is a problem, only a minor modification should be made.
Fragmentation-
The fragmentation threshold, which is specified in bytes, determines 
whether packets will be fragmented. Packets exceeding the 2346 
byte setting will be fragmented before transmission. 2346 is the 
default setting 
Apply-
Click 
Apply 
to save changes
DTIM interval-
(Delivery Traffic Indication Message)- 
3
is the default setting. DTIM 
is a countdown informing clients of the next window for listening to 
broadcast and multicast messages.
TX Rates-
The DWL-2000AP will automatically sense the best possible speed 
when you select 
Auto
(the default setting), or you can choose the 
data transfer rate: 54Mbps,48Mbps, 36Mbps, 24Mbps, 18Mbps, 
12Mbps, 11Mbps, 9Mbps,6Mbps, 5.5Mbps, 2Mbps, 1Mbps. 
Authentication-
Open System
- communicates the key across the network
Shared Key 
- devices must have identical WEP settings to 
communicate