User Manual

3e-528 Wireless Video Server Chapter 3: Access Point Conguration
26 29000142-001 A
3e-528 Wireless Video Server Chapter 3: Access Point Conguration
29000142-001 A 27
You can assign a channel number to the AP (if necessary) and modify the Tx
Pwr Mode.
The Channel Number is a means of assigning frequencies to a series of
access points, when many are used in the same WLAN, to minimize interference.
There are 11 channel numbers that may be assigned. If you assign channel num-
ber 1 to the rst in a series, then channel 6, then channel 11, and then continue
with 1, 6, 11, you will have the optimum frequency spread to decrease “noise.”
If you are using the 3e-528 as both an AP and bridge, the channel number set
for the AP board and the channel number set for the bridge should be sufciently
different to avoid interference.
If you click on the button Select the optimal channel, a popup screen will
display the choices. It will select the optimal channel for you. You can also set up
the optimal channel at boot up.
Tx Pwr Mode and Fixed Pwr Level: The Tx Power Mode defaults to Auto,
giving the largest range of radio transmission available under normal conditions.
As an option, the AP's broadcast range can be limited by setting the Tx Power
Mode to Fixed and choosing from 1-8 for Fixed Pwr Level (1 being the shortest
distance.) Finally, if you want to prevent any radio frequency transmission, set Tx
Pwr Mode to Off.
There are a number of advanced options included on this screen as described
in the following chart:
Advanced Options
Beacon Interval
Range 20-1000 The time interval in milliseconds in which the
802.11 beacon is transmitted by the AP.
RTS Threshold
Range 1-2346 The number of bytes used for the RTS/CTS
handshake boundary. When a packet size is
greater than the RTS threshold, the RTS/CTS
handshaking is performed.
DTIM
Range 1-255 The number of beacon intervals that broadcast
and multicast trafc is buffered for a client in
power save mode.
Basic Rates Basic Rates for 802.11b
1 and 2 Mbps
1, 2, 5.5 and 11
Mbps
The basic rates used and reported by the
AP. The highest rate specied is the rate that
the AP uses when transmitting broadcast/
multicast and management frames.
Preamble
Short/Long
Preamble
Species whether frames are transmitted with
the Short or Long Preamble
Broadcast SSID
Enabled/
disabled
When disabled, the AP hides the SSID in
outgoing beacon frames and stations cannot
obtain the SSID through passive scanning.
Also, when it is disabled, the AP doesn’t
send probe responses to probe requests with
unspecied SSIDs.