Two main causes of warnings are possible:
Threshold warnings
Configuration warnings
A Threshold warning is triggered for the following reason:
Signal Level warning
: If Signal Level Threshold is enabled in the Setup menu (see
) and the current measured
signal level is below the green level threshold. Note that the Air Expert measures the signal level of incoming 802.11 frames.
It may not be representative of the signal level as seen by the AP, unless the measurements are taken next to the AP under
test.
Configuration warning is triggered for the following reason:
Security
:
The AP is using WEP or has no security.
The AP does not have encryption enabled or is using WEP. WEP is a
weak security mechanism and shouldn’t be used.
8.2 Client Locate Function
From the AP Scan Table, select an SSID from the list, and select the
Locate
function key, to open up the Locate function for the
SSID selected.
From the Client Scan Table, select a client from the list, and select the
Locate
function key , to open up the Locate function
for the client selected.
The Locate function is used to track the physical location of the client. It measures the signal level of the traffic received
from the client under test and updates the display every 0.5 seconds.
To use this function, walk around the facility and monitor changes in signal level. A strong signal level (-20 dBm or greater)
indicates close proximity to the client under test.
This function can be used with the external directional antenna (see
) or the unit’s internal antennas.
Client Locate Function
MAC
: 48-bit unique MAC (Hardware) address of the client.
Vendor
: Hardware vendor manufacturer. Displays “N/A” when this information is not available.
Min:
Minimum signal level in dBm detected since the beginning of the test. This is the low watermark level.
Current:
Current signal level in dBm measured.
Max:
Maximum signal level in dBm detected since the beginning of the test. This is the high watermark level.
Audio On:
When the user moves closer to the access point, the unit beeps at a higher frequency as it detects a stronger
signal.
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