LT-4100 User & Installation Manual Rev 1.00 Bridge Alert Management (BAM)
Lars Thrane A/S www.thrane.eu Page 79 of 129
Temporary silence
Active unacknowledged alerts cause a short but periodically repeated audible signal. To temporarily silence
all alerts (and thus the audible signal), press the “Silence All” soft key. The temporary silence period expires
after 30 s, after which active silenced alerts become active unacknowledged alerts again, causing the
audible signal to resume.
NOTE: Active unacknowledged alerts cause a short but periodically repeated audible signal, which
can be temporary silences (30 s) by pressing the soft key ‘Silence All’. This temporary
silence has been illustrated in Figure 102.
Alert acknowledgement
Alerts of priority warning must be acknowledged by the user. To acknowledge an alert, press the “ACK
Alert” soft key.
Some alerts cannot be acknowledged by the user, in which case the “ACK Alert” soft key will be absent. This
applies to alerts for which the alert text and alert description is not enough for decision support.
When an alert is both acknowledged and rectified it disappears from the alert list. Cautions cannot be
acknowledged and thus disappear as soon as they are rectified.
Aggregation
The BAM concept defines aggregation as a means for an alert source to combine multiple individual alerts
of the same kind into a single aggregated header alert in order to help reduce the risk that the number of
individual alerts obscures the display of equally important additional alerts, for example due to the active
alert list length exceeding the maximum display capability of the alert source UI.
NOTE: The LT-4100 system currently does not define any alerts that can be aggregated.
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