Measurement
Condition
Threshold
Reference event
Use the drop-down menu(s) to select the relevant event (LOS, LOF, OOF
etc.).
LOS does not appear when using the electrical interface (STM-1eor STS-3).
For the PDH interfaces the lists of relevant events are different.
Error free period
Appears when SDH or SONET layer is present.
If a reference event is not generated within the time of this cycle, end the
switching time measurement.
Max reference duration
Allows you to specify the maximum duration of the selected reference
event(s). Valid values are from 0.000 ms to 10000.000 ms for SDH/SONET
and 0.000 ms to 4000.000 ms for PDH.
The setup of the protection and the requests used in an 'APS' test on SDH or
SONET layer is done on the Test Results > Detailed screen.
5.8.3 Test Results
5.8.3.1 Summary
Touching the Summary button in the navigation area will display the screen
shown below.
This screen presents a summary of the results of the APS test.
For each port the following information is displayed:
Reference event
Average switching time
Max. time
Max reference duration
5.8.3.2 Details for APS
Touching the Detailed button will display the screen shown below.
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