Raytheon NSC 18, User Manual

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Operator Manual
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3748DOC020102 Edition: 14.JAN.2005
2.3.6.4 Display for ALARM
Alarms are listed in an alarm message field until the cause no longer exists and
the operator has acknowledged them.
Alarms provide the operator with an indication of dangerous situations or sensor
failure.
Alarms are output when there is a situation that is critical to safety.
Alarms must be acknowledged, and will only be removed from the alarm list
when the situation that caused the alarm no longer exists.
These messages are displayed in the alarm readout display.
The alarm messages are numbered.
The alarm readout display is a scrolling field.
You can move up and down the alarm message list by pressing the
up and down buttons under the alarm readout display.
Figure: 2 − 32 Display for alarm messages
Indicates the total
alarm messages
Indicates the number
and the alarm mes-
sages
Scroll up and down
alarm messages
Softkey for
enabling/disabling the
AUDIBLE alarm
softbutton for
acknowledging
the Alarm
Messages
Sequence of actions
As Alarms are received, they are displayed in the chronological order in which
they occurred. If (and only if) all current alarms have been acknowledged, the
scroll function can be used to scroll through the.
When an alarm is received it will be placed at the top of the list. A new alarm will