Nortel 6220, Руководство пользователя, Страница: 121 / 178

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WLAN Cable Access Point 6220 CSU NTPM99CA Rel 2.0 Issue 5 Dec 2005
[802.11g]
Transmit Rate
54 Mbps 6 Mbps
48Mbps 11 Mbps
36 Mbps 5.5 Mbps
24 Mbps 2 Mbps
12 Mbps 1 Mbps
[802.11b]
Transmit Rate
11 Mbps
5.5 Mbps
2 Mbps
1 Mbps
A lower signal will increase the noise. In essence, the poorer the signal-
to-noise ratio, the lower this rate should be set.
Note: The transmit rate affects only the transmissions made by this
station.
Note: In case of 802.11b/g, the channel/frequency values are usually
determined by network administrators. If you set the channel and
frequency ensure that there are at least four numerical channels
difference between two overlapping cells to avoid interference. For
example, channels 1, 6 and 11 don’t overlap, but channels 1 and 3 do.
In the other side, if you are intended to use 802.11a, please keep in mind
that all channels (4 channels) with 20MHz bandwidth are not permitted
to be overlapped with each channels in the frequency plan.
Radio Transmit Power
-- Select the Transmit power in the list of five
(4) power levels as below.
Transmit Power Antenna Gain
Maximum
50%
25%
12.5% The allowed antenna gain per unit
varies with actual transmit power
of APU and CSU.
Note: It is recommended that you set the transmit power to “Maximum”
as the antenna listed in Appendix C (Antenna) has been designed to meet
FCC regulation to restrict the actual transmit power (EIRP) at the
maximum transmit power.