Trouble Shooting Guide
Table Of Contents
- Troubleshooting-Installing an RF link
- Issue : 5.3.x
- Authors : Matt Olson/Dave Sida
- Date : 30th July 2004
- CONTENTS
- CHANGE HISTORY
- INTRODUCTION
- Aligning an SU
- Fine tuning an SU
- SU signal quality
- Troubleshooting SU link from AP
- Link status
- AP Link Status
- SU Link Status
- MAC type
- Unit MAC address
- Channel
- Radio Channel Mask
- Correlation sequence
- MAC delay compensation
- Unit Range
- Base Station ID
- Radio Temperature
- RSSI
- Path loss in excess of FSL (estimate)
- Downlink RSSI Fade Margin
- TX maximum backoff
- TX current backoff
- Max TX power for channel
- Actual TX power
- Averaging MAC error rates over
- Downlink Header Error Rate
- Downlink Cell Error Rate
- Uplink Cell Error Rate
- Modem RSSI
- Mac stats
- Modem txpower
- Modem mmse
- PNMS Sector
- Survey Scan
- Modem msreg 6 1
- Modem rxdc stats
- Bun list channels
Axxcelera Broadband
Troubleshooting-Installing an RF link - 9 - Issue: 5.3.x
Rev 2
3 Aligning an SU
This section will discuss how align the antenna for optimal signal strength.
Line of Sight (LOS)
The first step is being able to see the tower or building the AP is mounted on. This should be possible in
most deployments, however there could be times that you will not be able to see this far due to weather or
you are unable to pick out the exact building or tower that the AP is mounted on. There for we described 2
methods to initially align an SU.
3.1.1 Eyeball alignment
The regular SU has a 20x20 (azimuth x elevation) so it usually very easy to eyeball the alignment. The
extender SU has a 10x10 (azimuth x elevation) so it may be a little more difficult to align. This can be done
by standing behind the unit while looking just over the top of the unit and adjusting the radio to point
directly at the AP. As you can see in this picture the SU has been aligned by just eyeballing the tower. On
the day this picture was taken there was a little bit of haze in the air so the tower is harder to see so it has
been identified by a red circle. With the 20x20 antenna this is generally good enough to get a quality RSSI.