Table of Contents
Advertisement
from each channel. The blue graph can be used for easy comparison among the
channels.
The numbers shown to the right of each frequency band are on a relative scale
calibrated in dB and represent the noise power in each band.
Depending on the anticipated nature and severity of local interference, scan
time can vary from a few minutes to a few hours. In extreme cases where
interference may be tied to time of day, a 24 hour sweep may be warranted.
In longer sweeps, refer to average and peak noise figures for the most
appropriate measure of interference.
Once you are finished with the spectrum analysis, click the Stop button, which
will stop the channel sweep and return the unit to normal operating mode.
Clicking the Clear button will zero out all accumulated channel sweep statistics.
11. Antenna Alignment
A separate antenna alignment screen facilitates the physical antenna alignment
procedure. Navigate to Installation -> Alignment to see the following
screen:
Please note that the RSSI for each client unit is displayed separately.
Link: The circle will turn from red to green when the wireless link is established
as a result of antenna alignment.
Description: This is the system name given to the unit in the Configuration
screen.
RSSI: A relative measure of power received by the radio currently logged into.
This is the measure of the remote unit's transmit power as received by your
unit.
At 36 Mbps, the RSSI should be at least 20. For higher data rates, the RSSI
must be higher to support reliable operation. At lower data rates, the RSSI can
fall below 20 and still maintain a reliable link. A sample of minimum RSSI levels
required is provided below:
Minimum RSSI at different data rates
36 Mbps
20
72 Mbps
25
108 Mbps
32
14
Advertisement
Table of Contents
