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4DEPTH 2100 Installation and Operation Manual
NAVMAN
Whenever power is applied the depth sounder is
active and water depth is displayed. If the sonar signal
does not show a bottom the display will indicate “- -”.
This can occur if the water is aerated or the maximum
depth is exceeded. Note: The maximum depth
decreases as boat speed increases.
Alarms
Two types of alarms can be set; the Deep Alarm and
the Shallow Alarm. The Deep Alarm can be set as
high as 184 metres (605 feet) while the Shallow
Alarm can be set as low as 0.3 metre (1 foot).
Whenever the water depth is greater than the Deep
Alarm setting and the alarm is enabled an alarm will
sound. The alarm repeats two short beeps and
alternates DAL and the water depth on the display.
Whenever the water depth is less than the Shallow
Alarm setting and the alarm is enabled an alarm will
sound. The alarm repeats a single long beep and
alternates SAL and the water depth on the display.
Alarms On/Off
Alarm settings are saved in memory.
To turn the alarm on, press (ON). An arrow on the
lower right corner of the display will show (next to the
Alarm Bell), to indicate that the alarms are on.
120#
ON
^
To turn the alarms off, press (OFF). The arrow in
the lower right corner will extinguish.
120
#
OFF
V
Note: The arrow will flash if alarms are turned ON
but the shallow alarm is individually set to OFF.
See next section.
3. Use and to change the value. If either
key is held depressed for more than one
second the reading will increase or decrease
rapidly.
4. When the alarm is set, exit by pressing both
Shallow Alarm
To set the shallow alarm:
1. Press for three seconds. The display will
show:
SAL
ON
^
2. After a few seconds the
display will indicate the current
Shallow Alarm depth setting.
Press for
3 Seconds
1 Operation
850
Press for 3
Seconds
851
and simultaneously. Alternatively, if no
keys are pressed for a period of 5 seconds the
normal depth display will resume.
OFFON
^V
Press simultaneously to exit
Note: If the reading is decreased to below
1.5 feet (or equivalent) the display will
show OFF and the alarm will be disabled. The
alarm can also be disabled by pressing both
and for 5 seconds. The word OFF will be
displayed but the alarm depth will be retained for
future use.
Deep Alarm
To set the deep alarm:
1. Press for three seconds. The display will
show:
dAL
OFF
V
2. After two seconds the display
will indicate the current Deep
Alarm depth setting.
3. Use and to change the
value. If either key is held depressed for more
than one second the reading will increase or
decrease rapidly.
4. When the alarm is set, exit by pressing both
and simultaneously. Alternatively, if no keys
are pressed for a period of 5 seconds the
normal depth display will resume.
OFFON
^V
Press simultaneously to exit
Note: If the reading is increased one step above
600 feet (or equivalent) the display will
show OFF and the alarm will be disabled. The
alarm can also be disabled by pressing both
and for 5 seconds. The word OFF will be
displayed but the alarm depth will be retained for
future use.
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