User Guide

AB-Access Config & User Guide 5.5 Axxcelera Broadband Wireless
July 27, 2004 Company Confidential Page 20 of 129
4. The survey page is displayed. It will take up to 2 minutes to appear so be patient.
5. Once you are finished click on Click here to exit.
4.9 RF-Energy Scanning
This feature is only applicable to FPGA APs and SUs.
The "survey scan" CLI command and 'radio survey' web page now provide additional data on
RF energy in each channel. Continuous or bursty energy can be detected, regardless of the source
(i.e. it does not have to be Axxcelera equipment), providing it is present during the scan. However,
the RF-energy-scan process interrupts normal service for the entire duration of the scan. Survey
results are saved in a temporary file called "ap_scan" or "su_scan", as appropriate. The file contains
results of the last scan to be performed, and is overwritten by a new scan. The file is normally lost
when the unit reboots, but the file is saved if a "config save" is performed, or if the unit is upgraded.
Therefore, it is now possible to use the "survey scan" command remotely, i.e. executing on an SU via
the RF link.
This feature can be used at the time of unit installation, or when trying to investigate and
mitigate an interference problem. It can also be used before performing a sector channel change to
look for potential interference problems.