Specifications

Installation and Operation Manual Chapter 5 Diagnostics and Troubleshooting
Airmux-200 Ver. 1.750 Viewing Performance Reports 5-5
• Current (t=0)
• 15 minutes Intervals
• Daily.
UAS – This parameter counts the time the air link was not providing any service.
There are several possible reasons for this situation; one of the sites has a power
failure, high interference, maintenance operation, etc.
Radio BBER Threshold – This parameter counts the seconds in which the radio
performance is below a user specified threshold. The threshold is measured in
percent. The threshold can be set from 0.1% up to 50%.
For links with E1/T1 service, the recommended value is 1% (system default).
Excellent TDM service is expected below the 1% threshold, meaning that for 1%
threshold, the expected BBER value should be 0 if there are no problems during
the 15 min interval. If the BBER threshold increases some degraded service might
be noticed.
For links with Ethernet only service, 8% threshold is recommended and not 1%
meaning that for 8% threshold, the recommended BBER value should be 0 if
there are no problems during the 15 min interval. Since Airmux-200 provides a
loss less Ethernet service, there is throughput degradation in case of
interference. The degradation is proportional to the BBER.
Radio RSS Threshold can also be used to indicate problems in the radio channel.
After verifying the RSS according to the link budget calculator during the
installation. A value of -5dB from the current RSS is recommended as a threshold.
Figure 5-4. Performance Monitoring Report Window