Harmonic ELECTRA VS, Руководство пользователя

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Chapter 3 ’Web User Graphical Interface’ — Operating Instructions (Tutorial)
160 Electra VS - Version 05.10
User Manual - Rev. A
SDI redundancy Mode
By default the main job is running. The automatic switching-back from
backup to main jobs is determined by the SDI redundancy mode.. Two
modes are configurable:
 Automatic switch-back = on main recovery : When a switching
trigger is raised on the main job, the switch to the backup job is
automatic. When there is no switching trigger raised on the main job,
the switch back from the backup job to the main job is also automatic.
It is not possible to perform manual switching between main and
backup.

Automatic switch-back = on backup failure : When the switching
trigger is raised on the main job, the switch from the main job to the
backup job is automatic. The switch-back from the backup job to the
main job is automatic when a switching trigger is raised on the backup
job (if the switching condition in the main job allow it). Switch and
switch-back operations can be performed manually.
SDI Redundancy Settings
To create a redundant job from SDI input:
1. Create and configure the SDI system
The declaration of SDI input / matrix, the linking of SDI input to
existing nodes is done in the Hardware/SDI panel. Refer to section
’Declaring SDI sources connected to a Node’ on page 151.
A manual switch or switch back from the active job to the inactive job
is allowed if:

- There is no switching trigger raised on the inactive job or

- There is a switching trigger raised on the inactive job but with a
lower criticality than on the active job.
A running standby backup job can be automatically stopped if it is
not active, another SDI redundant backup job must be activated
(automatic switch) and no SDI input or CPU resources are available.
An active backup job can be automatically switch-back (even if
"
Automatic switch-back
=
On backup failure
"
redundancy mode is selected) when:

- The main job has no switching trigger raised.

- And another SDI redundant backup job must be activated
(automatic switch) and no SDI input is available.

- And it is not possible to free SDI resources stopping a standby
backup job.
When an SDI topology is created in the Hardware/SDI panel, it is
automatically recognized as an SDI topology with redundancy or
not.