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 SecureSync is not synchronized to its references.
Output Enabled in Holdover: The output uses the selected SSM code
unless SecureSync is not synchronized to its references (the output is
present while in the Holdover mode). While SecureSync is not syn-
chronized, QL-DNU SSM code will be broadcast.
Output Disabled in Holdover: The output uses the selected SSM code
unless the SecureSync 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
SecureSync 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
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 page347.
The GB PTP Status window contains two tabs: Main and Advanced.
Main tab: Status information
476 SecureSync User Reference Guide
APPENDIX
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