Grass Valley iControl V.4.43 - Manual (Page 413)

iControl
User Guide
403
It is possible to override the error status of sub-alarms when they are triggered. This is useful
when, for example, a device is only able to report a status of either normal (green) or error
(red), but you want the error condition to be reflected as a warning (yellow) in the virtual
alarm. To change a sub-alarm’s contribution, click in the Contribution column, and then
select the status you want the virtual alarm to use when an error occurs.
Figure 7-76
For example, if a sub-alarm goes from green to orange or red, but the selected contribution
is yellow, the virtual alarm will “see” yellow (the virtual alarm’s overall status may still
depend on other sub-alarms).
The Invert contribution allows performing a logical “NOT” calculation on sub-alarms. This
feature can be used, for example, to report alarms from GPI inputs. It can also be used to
handle cases where an error is expected, and not seeing an error is a sign that something
probably went wrong. The table below describes the result of inverting sub-alarms:
Selecting the Faults only contribution causes a sub-alarm to be mapped to NORMAL
unless it’s in one of the fault statuses—usually CRITICAL, MAJOR, and MINOR. The list of fault
statuses can be modified by using the setFaultSeverities( ) property. See the GSM Scripting
Manual for details.
Sub-alarm Status Inverted Contribution
NORMAL ERROR
MINOR NORMAL
MAJOR NORMAL
CRITICAL NORMAL
NON-EXISTENT NON-EXISTENT
PENDING PENDING
DISABLED DISABLED
UNKNOWN UNKNOWN
Note: If the sub-alarm’s fault condition is cleared, its contribution will always be
green, unless the value specified in the Contribution column is black.