Alarms - NorthStar EXPLORER 443S Installation And Operation Manual

SONAR screen (see section 3-5)
Displays the strength and depth of the echoes
returned from each ultrasonic pulse. The depth
range is displayed in the lower right corner. This
screen is a powerful aid, ideal for showing the
bottom hardness and the fish species.
This screen can also be used to adjust the display
shading on the HISTORY and ZOOM screens.
NAVIGATE screen (see section 3-6)
Prominently displays the water depth as a digital
readout. The corresponding bottom trace is
also shown. These two complimentary features
are particularly useful for understanding depth
trends when travelling at speed.
It also displays the boat speed and the enabled

alarms.

3-1 Alarms
Alarms can be enabled to automatically detect
certain conditions, such as the water being
too shallow. The trigger settings for the alarms
can be defined to suit the boat and individual
preferences.
The fishfinder has six alarms, TOO SHALLOW, TOO
DEEP, FISH ALARM, TEMP VALUE, TEMP RATE and
LOW BATTERY.
The alarm symbols and beeper cycles for all of
the alarms are shown in section 4-1. The FISH
ALARM is three short beeps, the TOO SHALLOW
ALARM is a rapid continuous beep while all others
are a slower continuous beep.
When an alarm condition is met, then:
· The beeper sounds.
· The ALARMS menu is displayed on the screen
with the activated alarm(s) flashing.
Press any key to acknowledge the alarm, stop
the beeping and remove the ALARMS menu.
This does not disable the alarm. The symbol will
continue to flash until the alarm condition is no
longer present.
8
Northstar Explorer 443s/443sp Installation and Operation Manual
DATA screen (see section 3-7)
The DATA screen displays the water temperature
and water temperature history over the last 40
minutes. It also displays the boat battery voltage,
log, engine-hours counter, boat speed, water
depth and enabled alarms.
SETUP menu (see section 4)
Use this option to customise the Explorer
443s/443sp to suit the boat and individual
preferences.
RANGE menu (see section 3-8)
Use this option to select either Auto or Manual
Range and to change the selected depth range.
Alarms automatically re-enable
The TOO SHALLOW, TOO DEEP and LOW BATTERY
alarms automatically re-enable when the value
moves outside the alarm trigger setting.
The TEMP VALUE alarm automatically re-enables
when the temperature is more than 0.45°F
(0.25°C) above or below the alarm trigger setting.
The TEMP RATE alarm automatically re-enables
when the rate of temperature change falls below
the trigger setting by more than 0.2°F (0.1°C) per
minute.
Enabling Alarms and Changing Trigger Values
See section 4-1 for information about enabling
alarms and changing the trigger values.