NorthStar 972 Quickstart Manual And Reference Manual page 139

ALARM ALARM MESSAGE
ICON
LOADING CHARTS
NO NETWORK
BOTTOM
COLLISION!
TEMPERATURE
ALARM
FISH ALARM
RADAR GUARD
VIOLATION
RADAR DATA NOT
AVAILABLE
Reference Manual Revision B
Table 3: 972 alarms (continued)
ACTIVATED WHEN...
Machine is loading new charts
A 972 designated as a slave and requiring a
master to be present on the network is not
receiving networking signals.
Sounder alarms (shown only if the sounder is enabled)
Echo sounder detects that the seabed is
higher than the specific limit you've set.
Water temperature reaches the condition
specified.
Echoes are detected within the specified depth
range.
Radar alarms (shown only if radar is enabled)
Radar echoes are received within the guard
zone.
The 972 hasn't received radar data for several
seconds.
CONTROLLED
ON ALARM
SCREEN? TIME–OUT?
No
No
No
falls below
No
No
No
No
Reference section 9 — Alarms and TideTrack
CLEARS CLEARS
AFTER WHEN
OK?
No YES
No YES
Within 20 YES
seconds
after the
seabed
the alarm
zone
No No
No YES
135
Alarms