Spectracom NetClock 9400 Series, Руководство пользователя

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Enable SyncE : If checked, allows access to the synchronous Ethernet settings. There will
always be an ESMC message broadcast if Enable SyncE is checked.
Enable ESMC : [checkbox]
ESMC Signal Control : Determines which SSM to use in the ESMC mes
sage. One of two messages will be broadcast: either the message selected
in the SSM Code dropdown or the QL_DNU code. The user may set one
of the following broadcasting options:
Output Always Enabled : Always broadcasts the selected SSM code,
even when NetClock is not synchronized to its references.
Output Enabled in Holdover : The output uses the selected SSM code
unless NetClock is not synchronized to its references (the output is
present while in the Holdover mode). While NetClock is not syn
chronized, QL-DNU SSM code will be broadcast.
Output Disabled in Holdover : The output uses the selected SSM
code unless the NetClock references are considered not qualified
and invalid (the output is not present while in the Holdover mode).
While references are invalid, QL-DNU SSM code will be broadcast.
Output Always Disabled : The output is not present, even if any
NetClock references are present and considered qualified. QL-DNU
SSM code is broadcast.
SSM Code : The Sync Status Messaging (SSM) code to be utilized. Choice
of code is made through the drop-down list.
Note: Some parameters define a PTP packets through
put. They use the “log2 seconds“, defined as follows.
Positive Value: n => 2n seconds between two successive PTP packets
Negative Value: -n => 2(-n) = (1/2n) => 2n PTP packets per second
5.2.7.3 PTP Grandmaster [-32]: Status Window
To view the status of a PTP interface, go to its Status window. For instructions, see "Viewing
Input/Output Configuration Settings" on page 343.
NetClock User Reference Guide 371
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