To use this function:
1. Select a suspected source of interference from the list and press
OK
.
2. Tap on the density view graph over the suspected frequency range. The green signature shape appears in any area that is
tapped.
3. If the signature’s shape matches the interference, then the source of interference has been identified. If the signature’s
shape does not match the interference, select another device type from the signature’s list and repeat the operation.
The Auto function tracks the signal and traces it in white based on adjusted sensitivity and signal levels.
Note that the height (amplitude) of the signature’s shape should not be taken into account when making the selection, as it only
reflects the strength, i.e. proximity to the interference source.
For descriptions of common interference sources refer to
The following figure shows a Bluetooth interference signature overlaid on the density spectrum.
Bluetooth Interference with Density Graph
9.4.2 Common WiFi Interferers
The following common WiFi or non-WiFi interference sources are available in the Signature Library:
802.11n 20 MHz
802.11n devices with channel width of 20 MHz are present in the 2.4 GHz and 5 GHz frequency bands. Their shape is
characterized by a flat top extending by 10 MHz on each side the center channel’s frequency. Note that 802.11ac devices
have the same shape, but can only operate in the 5 GHz frequency band.
802.11n 20 MHz Signature
WiFiAirExpertSeries_eManual_D07-00-120P_Rev A00
