User's Manual

F-92
Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide
OL-4211-05
Appendix F Performing a Site Survey
Using Thresholds
Note When a value reaches a threshold and stays there, continuous triggers are not generated. After a
value reaches a threshold, it must become not equal to the threshold value before another trigger
is generated.
Signal Strength Triggers audible alerts, log file entries, or both when the Signal Strength
value reaches or crosses over the specified threshold value. If you check
this check box, be sure to also choose a threshold value.
Threshold Value Range: –95 to –45 dBm or 0 to 100%
Default: Unchecked; –75 dBm or 40%
Note The actual dBm reading could exceed the stated threshold value
range.
Note The Display in percent check box on the Associated AP Status
tab determines which threshold value units are used.
Noise Level/Signal Quality Triggers audible alerts, log file entries, or both when the Noise Level or
Signal Quality value reaches or crosses over the specified threshold
value. If you check this check box, be sure to also choose a threshold
value.
Threshold Value Range: –45 to –95 dBm or 0 to 100%
Default: Unchecked; –65 dBm or 40%
Note The actual dBm reading could exceed the stated threshold value
range.
Note The Display in percent check box on the Associated AP Status
tab determines which condition and threshold value units are
used.
Signal-to-Noise Ratio/Link
Quality
Triggers audible alerts, log file entries, or both when the Signal-to-
Noise Ratio or Link Quality value reaches or crosses over the specified
threshold value. If you check this check box, be sure to also choose a
threshold value.
Threshold Value Range: 0 to 50 dBm or 0 to 100%
Default: Unchecked; 20 dBm or 40%
Note The actual dBm reading could exceed the stated threshold value
range.
Note The Display in percent check box on the Associated AP Status
tab determines which condition and threshold value units are
used.
Link Speed Triggers audible alerts, log file entries, or both when the Link Speed
value reaches or crosses over the specified threshold value. If you check
this check box, be sure to also choose a threshold value.
Threshold Value Range: 0 to the maximum rate of the current
connection
Default: Unchecked; 11 Mbps
Condition Description