NorthStar 972 Quickstart Manual And Reference Manual page 126

Reference section 7 — Echo sounding
122
Echo sounding alarms
To set the markers:
Set upper
1. Press
2. Press the cursor pad up or down to set the
depth, or use the keypad to manually enter
the desired depth (press ENTER when done).
Set lower
3. Press and set the depth of the
lower marker in the same way.
Now you must tell the 972 whether you
wish to be notified of fish detected inside
the depth range you've set, or outside that
range.
Setting inside or outside fish markers
If you designate the markers as
markers, the fish alarm sounds when fish
are detected within these markers. If you
set these markers as
Outside
fish alarm sounds when fish are detected
outside of these markers.
To set the markers to
Inside
the window, press Markers to
fish alarm
cycle between the two settings.
Turning the fish alarm on and off
To turn the alarm on or off, at the
window, press Alarms. Generally, you'll
want to turn the alarm on after you finish
making all the other settings.
Setting the bottom alarm
When the bottom alarm is set, an alarm
sounds if the echo sounder detects that the
bottom is shallower than the limit you've
set. A red marker indicates the limit.
When a shallow bottom is detected, the
alert tone sounds and the flashing alarm
icon
clears automatically after 20 seconds, and
the alarm is reset.
To access the bottom alarm:
1. At the Echo Sounder screen, press
2. Press
Inside
3. Press
Now you can set the depth at which you
markers, the
want to be notified about a shallow
bottom.
or , at Setting the bottom level
Outside
To set the bottom level, at the
window, press the cursor pad up or down
to set the depth, or use the keypad to
manually enter the desired depth (press
ENTER
fish alarm
The sounder's depth indicator reflects the depth
below your vessel's transducer, not below the keel.
Ask your installer for the exact distance between
your transducer and your keel. This value must
then always be manually added to the sounder's
is displayed. This message
BOTTOM
Alarms
.
Bottom alarm.
when done).
NOTE:
More
.
bottom alarm
Northstar 972