User`s manual

AirLive WHB-5854A Wireless Outdoor Bridge
25
Mode in 5GHz Radio Basic Setting page. Rates of 6, 9, 12, 18, 24, 36, 48
and 54Mbps are supported for the wireless mode of 54Mbps (802.11a). And,
rates of 12, 18, 24, 36, 48, 72, and 108Mbps are supported for the wireless
mode of 108Mbps (802.11a Turbo). The mode of 108Mbps offers the double
data rate than of 54Mbps.
Note: In order to maximize the system performance, it is recommended
to follow the following suggestions.
 For Master Bridge, it is recommended to set data rate into “best” on
Master Bridge to communicate with Slave Bridges of different distance
and signal strength.
 For Slave Bridge, it is recommended to check or predict the received
signal strength at the Slave Bridge, and pick a supported data rate
according to the following table. Note: 3 to 5dB additional margin is
recommended to maintain a reliable link.
Basic Mode Turbo Mode
Modulation Data Rate
(Mbps)
Minimum
RX Sensitivity
Data Rate
(Mbps)
Minimum
RX Sensitivity
BPSK 6
-88
12
-85
BPSK 9
-87
18
-84
QPSK 12
-86
24
-83
QPSK 18
-84
36
-81
16QAM 24
-81
48
-78
16QAM 36
-76
72
-73
64QAM 48
-72
96
-69
64QAM 64
-68
108
-65
Table 1 5GHz RX Sensitivity VS. Data Rate
7) Transmit Power Available selection of Transmit Power are Full, Half (-3dB),
Quarter (-6dB), Eighth (-9dB), and Minimum. Select the appropriate Transmit
Power according to the distance and environmental factor between Bridges.
8) RTS/CTS Threshold In order to prevent the transmission collision in a hidden