Echo Sounding Alarms - NorthStar 972 Quickstart Manual And Reference Manual

Echo sounding alarms

The echo sounder's alarms work just like
all other alarms: they are displayed as a
flashing alarm icon on the screen, with
details shown on the
accessed with the
starting on page 132.)
To alert you automatically in situations
related to echo sounding, you can set three
types of alarms:
Setting the fish alarm
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.
You can selectively limit the size of the fish
you want to be notified about by adjusting
the alarm's echo strength level. Using this
feature, you'll only be alerted to the
presence of fish that meet your minimum
size requirements.
You may further narrow your fish alarms
to notify you of the presence of fish within
(or outside) a certain depth range. Only
those fish that are detected inside (or
Reference Manual Revision B
Alarms
key. (See Alarms,
STAR
fish alarm
•
seabed bottom alarm
•
temperature alarm
•
outside) of that range will trigger the
alarm. Green markers are displayed to
indicate the range.
screen
When fish are detected, the alert tone
sounds and the flashing
displayed. This message clears automati-
cally after 20 seconds and the alarm is
rearmed.
To access the fish alarm settings:
1. At the Echo Sounder screen, press
2. Press
3. Press
Setting the alarm's echo strength level
To set the fish alarm's minimum
echo-strength level:
1. At the fish alarm window, press
2. Press the cursor pad up or down to set the
echo strength level from 1 to 15.
Setting the upper and lower marker depths
The fish alarm will sound only when there
are echoes inside (or optionally, outside)
the upper and lower markers. These
markers are displayed on the
screen.
alarm icon is
FISH
Alarms
.
Fish alarm
.
Echoes that are stronger than the selected
level will cause an alarm.
Echo Sounder
Reference section 7 — Echo sounding

Echo sounding alarms

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