Simrad NX45 Specifications Page 56

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Simrad NX40/45 Installation and Operation Manual56
consumption curves for different boat, weather or sea
conditions. Compare these with your rst curve to see
how your boat’s performance changes with conditions.
Making a curve
Start running the boat in a straight line.
Choose a speed source for the curve. Normally
choose Water speed to measure the boat’s potential
performance.
Press
twice, then select Fuel.
Select
Fuel consumption curve, then select New.
Enter the comfortable maximum RPM you know you
can achieve for the engine rather than the maker’s
value.
The NX40/45 then asks you to set the minimum
RPM. Set the throttle to idle; on a multi engine
boat set all engines to about the same idle RPM.
Now, do not change the engine speed. Wait for about
60 seconds for the boat to stabilise, then press
.
Wait while the fuel computer records the data.
The NX40/45 then asks you to set the throttle to
achieve a target RPM. On a multi engine boat set all
engines to about the target RPM. When the engine
RPMs are correct, the Target RPM box will turn green.
Now, do not change the engine speed. Wait for
about 60 seconds for the boat to stabilise, ensuring
the Target RPM box stays green. Then press
. Wait
while the fuel computer records the data.
The NX40/45 repeats the above step to record data
up to the maximum RPM. Then the NX40/45 asks
if you want to save the curve. Select Yes. The fuel
computer asks for a name for the curve. Change
the default name if required. Then press
. The
NX40/45 stores the new curve.
Note To interrupt making the curve at any time, press
.
13-6-2 Managing fuel consumption curves
Renaming a curve
> > Fuel > Fuel consumption curve >
Name > select the name of the curve > Rename >
> change the name
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