NorthStar Navigation 435, 438 Setup Units, Depth, Distance Fuel, Speed, Temperature, Nmea data

3-7 Setup > Units

Press MENU twice to display the Setup menu,			Depth
then select Units:	The default units		Select from:
			•	ft (feet)
	are shown in this
			•	m (metres)
	example.
				fa (fathoms)
	Distance		•
			Fuel
	Select from:
	•	nm (nautical miles)	Select from:
				Litres
	•	mi (miles)	•
				USGal (US gallons)
Speed	•	km (kilometres)	•
			•	ImpGal (Imperial Gallons)
Select from:
			Temperature
• kn (knots)
• mph (miles per hour)			Select either:
				°F (Fahrenheit)
• kph (kilometres per hour)			•
				°C (Celsius)
			•
3-8 Setup > Comms (Explorer 438 only)
Use this feature when the Explorer 438 is			NMEA
connected to other Northstar instruments or any			NMEA is generally used with third party
NMEA compatible instrument.
			instruments. Select On to transmit NMEA
Press MENU twice to display the Setup menu,
			sentences (see Appendix A - Specifications).
then select Comms:			Otherwise, select Off.

NMEA data

Use this to specify which NMEA sentences will be transmitted (see Appendix A - Specifications and section 5-6 Data display, for information about how to display NMEA data).

3-9 Setup > Calibrate

Press MENU twice to display the Setup menu, then select Calibrate:

The fuel options can be calibrated only when the optional single or twin engine kit is installed on petrol/gasoline engines.

Speed

Calibration may

be required because different hull shapes have different flow characteristics.

Obtain an accurate measurement of the boat's speed from a GPS receiver; or by following

another boat travelling at a known speed; or by making a timed run over a known distance.

Note: for accurate calibration:

•The speed from a GPS receiver should be greater than 5 knots.

•The speed from another paddlewheel transducer should be between 5 and 20 knots.

•Best results are achieved in calm conditions where there is minimal current (best at high or low tide).

Use the cursor keys to display the speed readout box, then increase or decrease the readout to match the independent speed value.

Northstar Explorer 435/438 Installation and Operation Manual 15