Appendix A - Specifications
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):
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 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
1Unit will not turn on:
a Fuse blown or circuit breaker tripped.
b Battery voltage is outside the range 10.5 to
16.5V DC.
cPower/data cable damaged.
2 Depth reading wrong or erratic:
aUnit temporarily unable to detect bottom, for example water too deep or too shallow, water not clear, boat reversing and transducer in turbulent water.
bDepth transducer cable unplugged or damaged.
cDepth transducer fouled or damaged. Check for fouling, damage or too thick a layer of paint over it.
dDepth transducer installed incorrectly or transducer does not have a smooth flow of clear water over it. Review installation.
eInterference from the ultrasound pulse from another depth sounder.
fInterference 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.
3The word SIMULATE flashes at top, left of screen, values displayed are unexpected:
aUnit is in simulate mode (see section
4 The display fogs:
aMoist air has entered the breathing tube at the rear of the unit. Air the boat or run unit with backlight fully on.
bWater has entered the breathing tube. Return unit for service.
Northstar Explorer D310 Installation and Operation Manual | 11 |
