User's Manual Part 1

Chapter 3 Testing
WiFi Troubleshooting
WiFi Advisor Wireless LAN Analyzer User’s Guide
December 2014 22073751, Rev. 002 Page 23
The Spectral results screen has 3 main areas:
• The spectral graph area, where the real-time spectral data is displayed
• The controls area, where the user can configure the spectrum analyzer
ranges and modes
• The BSSID List / Channel information pane
Navigating the Spectral result screen
As in the BSSID and Channel views, the BSSID List view in the right pane provides
a listing of all detected BSSIDs along with their channel setting, current signal
strength, and MAC address. To change the order of the list, tap 123 (sort by
channel) or ABC (sort by name). The BSSID list is not continuously updated while
spectral data is being displayed and is therefore labeled as SNAPSHOT as it repre-
sents a list of BSSIDs gathered over a finite period of time prior to turning on the
Spectral Analyzer.
Touching a specific BSSID from the BSSID Snapshot List configures the Spectrum
Analyzer to the channel(s) associated with the BSSID selected, and changes the
BSSID Snapshot view in the right pane to the Channel Details for that particular
channel which includes the channel score, the channel utilization, noise, the
BSSIDs resident in the channel, and the BSSIDs that are overlapping (adjacent to)
that channel. NOTE: This data is a snapshot. Live data may vary slightly.
The Spectrum Analyzer controls, located across the top of the graph, consist of the
following:
1 Band toggle switch – selects 2.4GHz or 5GHz bands for analysis
2 Channel bandwidth selector – selects the width of the spectrum analyzer:
– 20MHz
– 40Hz, or
– 80MHz (5GHz band only)
3 Channel up (+) or down (-) – touch to increment or decrement the 802.11
channel(s) being analyzed
4 Max Hold – turns the Max Hold trace on the spectral graph on or off. When
Max Hold is on, a blue line appears above the standard spectral line that
represents the peak value (in dBm) seen at each frequency point.