EXFO FTB-1, User Manual

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Test Results
376
FTB-700G/800 Series
Quality Level (SyncE)
Quality Level (SyncE)
The quality level characterizes the clock quality in terms of network
synchronization.
From the
Test
menu, tap
Results
, and the
Quality Level
tab.

Generated QL indicates the Quality Level value that is generated.
Last Change
indicates the date and time of the Generated Quality
Level value has changed. For 1GE Electrical interface using Local
Clock
set to
Slave
, the
Last Change
is not available.

Last QL Received indicates the last Quality Level value received. The
pass/fail verdict is also displayed when both
QL Mismatch Monitoring
and Pass/Fail Verdict check boxes are selected.
Last Change
indicates the date and time of the Last QL Received has
changed.

QL Mismatch Monitoring
when selected (default), enables the Quality
Level mismatch monitoring.

Expected QL
allows the selection of the Expected Quality Level value.
Available when the QL Mismatch Monitoring check box is selected.
Quality Level
value
SSM Description
QL-STU/UNK 0 Synchronized - Traceability Unknown
QL-PRS 1 Primary Reference Source Traceable (G.811)
QL-PRC 2 Primary Reference Clock Traceable (G.811)
QL-INV3 3 Quality Level Invalid 3
QL-SSU-A/TNC 4 Type I or V slave clock (G.812)
Traceable to Transit Node Clock (G.812 Type V)
QL-INV5 5 Quality Level Invalid 5
QL-INV6 6 Quality Level Invalid 6
QL-ST2 7 Traceable to Stratum 2 (G.812 Type II)