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Northstar Explorer D310 Installation and Operation Manual
11
Physical
Case size 111 mm (4.4”) square.
LCD display 82 mm (3.2”) wide, 61 mm (2.4”) high;
twisted nematic.
LCD digits 38 mm (1.4”) high.
Four operator keys, laser etched.
Backlighting for display and keys, amber, four
levels and off.
Operating temperature 0 to 50°C (32 to 122°F).
Transducer cable length 8 or 9 metres (26.25 or
29.5 ft).
Power Cable length 1 m (3.25 ft).
Electrical
Power supply 10.5 to 16.5 V DC, 30 mA without
backlighting, 190 mA with full backlighting and
transducer.
External beeper or light output, switched to
ground, 30 V DC and 250 mA maximum.
Depth
Range 0.5 to 130 m (1.5 to 400 ft, 0.3 to 67 fa).
Typical accuracy < 2% (depends on type of
depth transducer, installation and water clarity).
Displays 0.0 to 19.9, 20 up.
Adjustable keel offset ± 2.9 m (± 9.6 ft, ± 1.6 fa).
Too deep and too shallow alarms (run both at
once to provide anchor watch facility).
Interfaces
NavBus connection to other Northstar
instruments.
NMEA 0183 outputs: DBT, DPT, PTTKD.
Standards compliance
EMC compliance
USA (FCC): Part 15 Class B.
Europe (CE): EN50081-1, EN50082-1.
New Zealand and Australia (C Tick):
AS-NZS 3548.
Environment: IP66 from front when correctly
mounted.
Power/data cable wires
Wire Signal
Red Power positive, 12 V DC, 190 mA maximum
Black Power negative, NMEA common
Green External beeper or light out, switched to
ground, 30 V DC and 250 mA max.
Orange NavBus +
Blue NavBus -
White NMEA out
Yellow No connection
Appendix A - Specifications Appendix B - Troubleshooting
This troubleshooting guide assumes that you have
read and understood this manual.
It is possible in many cases to solve difficulties
without having to send the unit back to the
manufacturer for repair. Please follow this
troubleshooting section before contacting the
nearest Northstar dealer.
There are no user serviceable parts. Specialized
methods and testing equipment are required to
ensure that the unit is reassembled correctly and is
waterproof. Repairs to the unit must only be carried
out by a service centre approved by Northstar.
Users who service the unit themselves will void the
warranty.
More information can be found on our website:
www.Northstarnav.com
1 Unit will not turn on:
a Fuse blown or circuit breaker tripped.
b Battery voltage is outside the range 10.5 to
16.5 V DC.
c Power/data cable damaged.
2 Depth reading wrong or erratic:
a Unit temporarily unable to detect bottom,
for example water too deep or too shallow,
water not clear, boat reversing and
transducer in turbulent water.
b Depth transducer cable unplugged or
damaged.
c Depth transducer fouled or damaged.
Check for fouling, damage or too thick a
layer of paint over it.
d Depth transducer installed incorrectly or
transducer does not have a smooth flow of
clear water over it. Review installation.
e Interference from the ultrasound pulse
from another depth sounder.
f Interference from electrical noise. Review
installation.
To check the transducer, disconnect it and
connect a known good transducer temporarily.
Hold it over the side of the boat in the water
and check if the unit displays a depth.
3 The word SIMULATE flashes at top, left of
screen, values displayed are unexpected:
a Unit is in simulate mode (see section 2-4).
4 The display fogs:
a Moist air has entered the breathing tube at
the rear of the unit. Air the boat or run unit
with backlight fully on.
b Water has entered the breathing tube.
Return unit for service.