User's Manual Part 2

BETA DRAFT - CISCO CONFIDENTIAL
F-6
Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Windows
OL-1394-03
Appendix F Performing a Site Survey
Using Passive Mode
Noise Level The level of background radio frequency energy in the 2.4-GHz
or 5-GHz band. The lower the value and the more green the bar
graph is, the less background noise present.
The histogram below the bar graph provides a visual
interpretation of the current level of background noise.
Differences in background noise level are indicated by the
following colors: green (low noise), yellow (middle of the range),
and red (high noise).
Range: –100 to –45 dBm
Note This setting appears only if you selected signal strength to
be displayed in dBm. See the “Specifying Signal Strength
Units” section on page F-3 for information.
Link Speed In passive mode, the site survey tool monitors transmitted
network traffic, and the data rate reflects the rate at which the
packets are being transmitted.
The Link Speed histogram provides a visual interpretation of the
current rate at which your client adapter is transmitting packets.
Differences in link speed are indicated by the following colors:
green (fastest), yellow (middle of the range), and red (slowest).
Value: 1, 2, 5.5, or 11 Mbps (2.4-GHz client adapters);
6, 9, 12, 18, 24, 36, 48, or 54 Mbps (5-GHz client
adapters)
Overall Link Quality The client adapter’s ability to communicate with the access point.
Value: Not Associated, Poor, Fair, Good, Excellent
Note This setting appears only if you selected signal strength to
be displayed as a percentage. See the “Specifying Signal
Strength Units” section on page F-3 for information.
Signal To Noise Ratio The difference between the signal strength and the noise level.
The higher the value, the better the client adapter’s ability to
communicate with the access point.
Range: 0 to 90 dB
Note This setting appears only if you selected signal strength to
be displayed in dBm. See the “Specifying Signal Strength
Units” section on page F-3 for information.
Associated Access Point The access point to which your client adapter is associated. It is
shown only if the access point was configured with a name and
your client adapter is in infrastructure mode.
Table F-1 Site Survey Passive Mode Statistics (continued)
Statistic Description