User's Guide

The scan time (default 1000) should be entered in milliseconds. The threshold (default -105 for 2.4 and 5
GHz) and duty cycle (default -90 for 2.4 and 5 GHz) should be entered in dBm. After making changes,
click OK to confirm the changes or click Cancel to discard any changes.
Scan Type
Advanced Spectrum Analysis supports two types of scans:
• Dedicated Scan—Conducts a full detailed spectrum scan (default).
• In-Line Scan—Conducts a spectrum scan of all channels minus 802.11 details.
Note
To conduct an In-Line Scan, you must enable location tracking RSSI scan under Configuration
> Operational Management > Sensor Operation and set the refresh rate to 1 second.
You can change the scan type by selecting the appropriate radio button. When the scan type is
changed, a warning is displayed.
Click OK to confirm the scan type change.
Views
Advanced Spectrum Analysis has the following four views that display default charts for each view:
• Utilization—Displays charts that show how your network is being utilized. The default charts are:
◦ Device Count
◦ RF Quality Index
◦ Duty Cycle.
• Physical Layer—Displays charts that highlight the physical layer of your network. The default charts
are:
◦ Spectrogram
◦ Duty Cycle.
• Interference—Displays charts that show interference sources in your network. The default charts are:
◦ Interference
◦ Spectral Density.
• Spectrum Detail—Displays charts that show the spectrum details of your network. The default charts
are:
◦ Spectrogram
◦ Real Time FFT (Fast Fourier Transform)
◦ Spectral Density.
Device Functions Requiring More Explanation
Configuration Tab
796 Extreme AirDefense User Guide for version 10.5.