Grass Valley iControl V.6.02 - Manual (Page 319)

iControl
User Guide
309
Optimistic AND logic table for determining the status of the CURRENT or LATCHED component of a virtual
alarm
When you create a virtual alarm, you can specify the use of either a pessimistic or optimistic
table for determining CURRENT an LATCHED statuses.When the virtual alarm is in operation,
iControl uses that table to calculate the combined statuses of the sub-alarms. Where more
than two sub-alarms are involved, iControl starts by comparing one pair of sub-alarms, then
takes that result and compares it with the next sub-alarm, and so on.
A third type of comparison—XOR—can be used to have a virtual alarm reflect whether or not
all of its sub-alarms have the same status. If all sub-alarms are the same, the virtual alarm will
be green. Otherwise, it will be red.
ACKNOWLEDGED Status
The ACKNOWLEDGED status of a virtual alarm is always calculated in the same way (i.e. there is
no distinction made between pessimistic or optimistic combinations).
Logic table for determining the status of the ACKNOWLEDGED component of a virtual alarm