Grass Valley Trinix NXT v.3.3.1 - Manual (Page 362)

362 Trinix NXT — Installation and Service Manual
Section 9 — Protected Paths
The Fail Back option refers to the ability to return to the primary output of
a valid path, if the output on the secondary path becomes invalid.
Note A manual Fail Back will not return to the primary path. The primary path must
be activated manually.
The fail back options are:
• Auto : Selecting the “Auto” option will allow an automatic fail back to
the Primary path from an active secondary path. The Primary path
output must be valid when the active Secondary path’s output becomes
invalid.
• Manual : Selecting the “Manual” option will prevent the router from
automatically switching to the Primary output path from an active Sec-
ondary. You will need to manually select the primary output path from
the interface if an active secondary path fails.
Primary Column
The Primary column is generated by the system and will automatically
show the maximum number of outputs that can be protected. Signal pres-
ence is indicated by a green output number; loss of signal is indicated by a
red output number
, as shown in Figure 254 below. In this example, there is
no signal on the Primary and Secondary path. This loss of both signals is
shown as a visual alarm in the Status column because neither output in the
path is active.
Figure 254. The Primary and Secondary Paths Have Failed
Signal has been lost