The Monitor Log
Chapter 9
FA4800 User Manual
Release 1.9.30
9-13
Figure 9-15: Threshold configuration dialog box
RSL Thresholds
Two RSL Thresholds can be defined. They are used as an indicator of prob-
lems in the radio channel. You can check the RSS from the Link Budget Cal-
culator results during installation. Values of -5dB and -8dB from the current
RSS are typical.
TSL Threshold
A counter is maintained, of the number of second intervals during which Tx
power exceeds this threshold.
BBER Threshold
The Background Block Error Ratio is measured as a percentage. The thresh-
old can be set from 0.1% up to 50%.
For links with Ethernet only service, 8% threshold is recommended. If there
are no problems during the interval, then for that threshold, the recom-
mended BBER value should be 0. Since the system provides a lossless
Ethernet service, there is throughput degradation in case of interference.
The degradation is proportional to the BBER.
Ethernet Thresholds - Capacity
This is used as a basis for checking adherence to a Service Level Agree-
ment. It is the number of seconds count that the link capacity falls bellow
the threshold.
Ethernet Thresholds - Traffic
The number of seconds count that received traffic exceeded this threshold.
It can be used to measure traffic peaks.
