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Chapter 7 - Setting the Alarms
Understanding the alarms
Setting the fish alarm
Page 7-2
The echo sounder's alarms work just like the other alarms.
Their status is updated every second, and their messages are
displayed in the following ways:
at the bottom of the ECHO screen, and also on various
•
windows that may be overlaid onto these screens
on the ALARMS screen
•
On this screen, you can manually "clear," or stop, new alarms,
although some are auto-clearing, and you can view old alarms,
which are alarms that already have cleared.
To alert you automatically in situations related to echo
sounding, you can set three alarms:
•
fish alarm
•
seabed bottom alarm
•
temperature alarm
You also can set the echo sounder to automatically save
*THERM##*
or
detected, if the fish or temperature alarms are on. To automatically
save these waypoints, see "Number of special waypoints" starting
on page 2-14.
When the fish alarm is on, an alarm sounds if an echo returns
from either inside or outside specific upper and lower limits
you've set.
To set the fish alarm:
1. At the ECHO screen, press MORE .
2. Press ALARM .
3. At the ALARM screen, press FISH ALARM .
The options on the FISH ALARM window are on/off, echo
strength level, upper and lower marker depths, and inside
or outside markers.
NOTE:
waypoints, when fish or a certain temperature are
490 Echo Sounder Operations Manual Rev. B2
*FISH##*
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Troubleshooting
