Wi Lan Inc EB02 Benutzerhandbuch

Troubleshooting Areas

APR 2001 Rev 03

107

High BER

Signal strength is too low

Perform RSSI test to determine fade margin
Align or change antennas or cables
Ensure LOS between antennas

Signal strength is too high

Adjust antennas
Increase distance between units

Interference

Change center frequency
Increase RF power
Change polarization of antennas
Physically isolate antenna from source of 
interference or change physical location of 
antenna

Bad radio (Tx/Rx)

Bench test radio
Exchange radio

Bad antenna

Visually inspect antenna for damage
Sweep antenna
Replace antenna

Bad cable

Visually inspect cable
Replace cable

Bad connectors

Visually inspect connectors
Replace cable/connectors

Noisy power supply

Replace power supply unit

Temperature

Determine ambient operating temperature is 
too high or low
Increase or reduce ambient temperature.

Low signal strength/
fade margin

Bad radio

Bench test radio
Replace radio

Bad antenna

Visually inspect antenna for damage
Sweep antenna
Replace antenna

Poor antenna alignment

Use RF diagnostics to re-align antenna

Bad cable

Visually inspect cables/connectors
Replace cable/connectors

Bad surge suppressor

Use voltmeter to check for open circuit
Replace surge suppresso.

Incorrect radio configuration

Bench test radio to confirm configuration
Reconfigure radio