Chapter 3
Testing
Troubleshooting
WiFi Advisor Wireless LAN Analyzer User’s Guide
Page 56
22073751, Rev. 003
September 2015
802.11 interference sources
–
Co-channel interference (forces your AP to share the channel)
–
Adjacent channel interference (looks like noise to your AP)
Look for < 4 co-channel interferers
and < 3 adjacent channel
Non 802.11 Interference sources
–
Microwaves, AV transmitters, cordless phones, baby monitors, etc.
Observe spectrum for interferers in
the channel of interest
High channel utilization
–
The more APs in the channel, the higher potential utilization
–
High utilization, low noise = high 802.11 traffic on the channel
–
High utilization, high noise = potential non-802.11 interferer
Look for <35% utili low
noise
802.11 a/b/g devices on your network
–
Slow a/b/g PHY rates occupy the channel longer than modern PHY rates for
the same amount of information transfer.
–
Old security types (WEP/WEPA1) limit connection to lower 802.11 rates
Detect and advise replacement of
old gear
Table 6
Trouble with the WiFi Advisor
Problem
Action
Cannot connect the mobile application to the
WiFi Advisor
Check that Bluetooth is ON (enabled) on your iPad.
Make sure that the iPad and WiFi Advisor are within reasonable Bluetooth
range of each other (ideally 0 to 20 feet)
The WiFi Advisor is unresponsive (locked-up)
Press and hold the power button for 5 seconds.
Table 5
Typical WiFi related problems (Continued)
Problem
Action
