The QAM auto threshold functionality enables automatic generation of QAM thresholds
based on current measurements. The user specifies how large deviations from current
measurements should be tolerated before an alarm is raised. The worst measurements
from the previous measurement period are used as the references. To have one or
more QAM threshold templates being generated automatically, highlight one or more
streams in the QAM tuning list and click the
Auto threshold
button. This will open the
Auto threshold
pop-up view.
Using the 'Create RF threshold' drop-down menu select wheter one common threshold
template should be used for all streams, or if individual threshold templates should be
created. Using the 'Threshold policy' drop-down menu select the acceptable deviation
from reference measurements. When 'Custom' is selected the user specifies
acceptable deviations for all parameters that constitute the QAM threshold template,
except Pre and Post FEC BER, for which the thresholds are fixed values not related to
measurements.
PROBE USERS' MANUAL VERSION 5.0
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