Lowrance 1600 Operating Guide
68
ALARMS
This unit has three different types of sonar alarms. The first is the Fish
Alarm. It sounds when the Fish I.D. feature determines an echo or group
of echoes is a fish. Another alarm is the Zone Alarm which consists of a
bar. Any echo that appears inside this bar triggers this alarm. The last
alarm is called the Depth Alarm. Only the bottom signal will trigger this
alarm. This is useful as an anchor watch, a shal-
low water alert, or for navigation.
This unit has three different types of sonar alarms. The first is the Fish
Alarm. It sounds when the Fish I.D. feature determines an echo or group
of echoes is a fish. Another alarm is the Zone Alarm which consists of a
bar. Any echo that appears inside this bar triggers this alarm. The last
alarm is called the Depth Alarm. Only the bottom signal will trigger this
alarm. This is useful as an anchor watch, a shal-
low water alert, or for navigation.
To adjust an alarm, first press the MENU key,
then select “ALARMS”. Now select “SONAR
ALARMS”. The screen shown at right appears.
Follow the instructions below for setting each
alarm.
then select “ALARMS”. Now select “SONAR
ALARMS”. The screen shown at right appears.
Follow the instructions below for setting each
alarm.
DEPTH ALARMS
The depth alarms sound a tone when the bottom signal goes shallower
than the shallow alarm’s setting or deeper than the deep alarm’s setting.
For example, if you set the shallow alarm to ten feet, the alarm will sound
a tone if the bottom signal is less than ten feet. It will continue to sound
until the bottom goes deeper than 10 feet. The deep alarm works just the
opposite. It sounds a warning tone if the bottom depth goes deeper than
the alarm’s setting. Both depth alarms work only off the digital bottom
depth signals. No other targets will trip these alarms. If you turn the digital
sonar off, the depth alarms will be inoperative. These alarms can be used
at the same time or individually.
The depth alarms sound a tone when the bottom signal goes shallower
than the shallow alarm’s setting or deeper than the deep alarm’s setting.
For example, if you set the shallow alarm to ten feet, the alarm will sound
a tone if the bottom signal is less than ten feet. It will continue to sound
until the bottom goes deeper than 10 feet. The deep alarm works just the
opposite. It sounds a warning tone if the bottom depth goes deeper than
the alarm’s setting. Both depth alarms work only off the digital bottom
depth signals. No other targets will trip these alarms. If you turn the digital
sonar off, the depth alarms will be inoperative. These alarms can be used
at the same time or individually.
To adjust the shallow alarm, highlight the “Shal-
low Depth” label. To adjust the deep alarm, high-
light the “Deep Depth” label. Both alarms adjust
identically. We’ll use the shallow alarm as an ex-
ample. Highlight the “Shallow Depth” label, then
press the right arrow key. The screen shown at
right appears.
low Depth” label. To adjust the deep alarm, high-
light the “Deep Depth” label. Both alarms adjust
identically. We’ll use the shallow alarm as an ex-
ample. Highlight the “Shallow Depth” label, then
press the right arrow key. The screen shown at
right appears.
Use the up or down arrow keys to select the number, the right and left
keys to move from number to number in the depth. For example, to set the
shallow alarm depth to 10 feet, press the right arrow key once, then press
the up arrow key once. The changes the second “0” to a “1”. Next, press
the right arrow key again and press the down arrow key once. This changes
the “1” at the end of the number to a “0”. The depth now shows 10 feet.
keys to move from number to number in the depth. For example, to set the
shallow alarm depth to 10 feet, press the right arrow key once, then press
the up arrow key once. The changes the second “0” to a “1”. Next, press
the right arrow key again and press the down arrow key once. This changes
the “1” at the end of the number to a “0”. The depth now shows 10 feet.
Press the ENT key to accept this setting. The unit returns to the alarms
menu, showing a shallow depth of 10 feet. Now you can activate the alarm
menu, showing a shallow depth of 10 feet. Now you can activate the alarm