Raymarine DSM250, Owner'S Handbook Manual

Page: 97 / 122

Chapter 6: Sonar Mode Operation 6-9
• Fish Alarm – If this alarm is
ON
the unit sounds a buzzer when-
ever it finds a fish. Different buzzer tones are used to indicate fish
detected by the 50 kHz and 200 kHz frequencies.
• Shallow water – You set depth at which the shallow water alarm
triggers. When the depth is less than that set, the buzzer sounds
and a pop-up window describing the alarm is displayed. You can-
not set the shallow alarm to be deeper than the deep alarm.
• Deep water – You set depth at which the deep water alarm trig-
gers.When the depth is more than that set, the buzzer sounds and a
pop-up window describing the alarm is displayed. You cannot set
the deep alarm to be shallower than the shallow alarm.
Note: The Deep Alarm must be set at a depth that is greater than the
depth at which the Shallow Alarm is set. Conversely, the Shallow
Alarm must be set at a depth that is less than the depth at which the
Deep Alarm is set.
After you have acknowledged the sounding of a shallow or deep
water alarm, a minimum of 30 seconds must elapse before a
another shallow/deep alarm can sound again.
The top line status bar shows the condition of the alarms:
• indicates an alarm is enabled. The speaker symbol is unfilled
until an alarm is triggered and silenced, then the symbol is shown
solid.
•
S
indicates the shallow alarm is enabled; a pop-up window indi-
cates when the alarm is triggered.
•
D
indicates the deep alarm is enabled; a pop-up window indicates
when the alarm is triggered.
• indicates the fish alarm is enabled.
External Alarms
All SeaTalk system alarms (except autopilot, shallow, and deep)
alarms are received and displayed in Sonar mode. You can silence
these alarms by pressing any key. No other action is taken except
to silence the alarm.