4. Web Management-Wireless and WAN Settings
AirLive WHA-5500CPE User’s Manual
40
Pre-shared Key
: This is an ASCII string with 8 to 63 characters. Please make sure
that both the WHA-5500CPE and the wireless client stations use the same key.
Encryption Type
: There are two encryption types
TKIP
and
CCMP (AES)
. While
CCMP provides better security than TKIP, some wireless client stations may not be
equipped with the hardware to support it. You can select
Both
to allow TKIP clients
and CCMP clients to connect to the Access Point at the same time.
Group Rekey Interval
: A group key is used for multicast/broadcast data, and the
re-key interval is time period that the system will change the group key periodically.
The shorter the interval is, the better the security is. The default is 300 sec.
4.2.11 Distance
Operation Mode -> Setup -> Distance
Please enter the distance to the remote wireless device here. The WHA-5500CPE will
then calculate the appropriate ACK Timeout value autom
atically. It is very important that you enter the correct distance for long distance
connection. Failure to do so will result in poor performance.
4.2.12 Transmit Power
Operation Mode -> Setup -> Transmit Power
You can adjust the transmit output power of the WHA-5500CPE’s radio from 10dBm to
24dBm. The higher the output power, the more distance WHA-5500CPE can deliver.
However, it is advised that you use just enough output power so it will not create excessive
interference for the environment. Also, using too much power at close distance can create
serious performance drop due to signal distortion.
At less than 200meter distance, the best output power is about 14dBm. At 2km distance;
the best output power setting is 18dBm for “11a” and “Super-A without Turbo”, 24dBm for
“Super-A with Static/Dynamic Turbo”.
