CORRECT CRAFT Air Nautique Specifications download pdf (Page 21)

information and three push button switches to manipulate the display. This

microprocessor-based gauge communicates with the speed transducer

assembly over a serial communication link. The speed transducer assembly

measures the pressures generated at each of the two Pitot tube pressure sources

and communicates the data to the speedometer gauge. The gauge then displays

the higher of the two sources as the current speed.

The tachometer gauge also utilizes a LCD display and push button switch

arrangement to communicate with the operator. The engine speed input to the

gauge comes directly from the engine ignition system.

Speedometer Operation

The speedometer operates in one of three “modes”. These are “Text mode”,

“Competition mode”, and “Deviation mode”. The operator may switch

between modes using the mode button.

The speedometer powers on in “Text mode” with the text line containing

“NAUTIQUES” and the deviation bar graph speed display blank. After

approximately five seconds the gauge will automatically enter “Competition

mode”.

In “Competition mode” the analog and digital speed displays will indicate

current speed and the pitot symbol will indicate which pitot tube is being used.

The deviation bar graph speed display at the bottom of the speedometer will

indicate how close the current speed is to the set point speed within the

displayed plus and minus limits. The limits can be changed from plus or minus

one mile per hour to plus or minus nine miles per hour. The current set point

speed is displayed just above the bar graph. If the current speed is below the

set point speed, bars in the deviation bar graph speed display will illuminate to

the left of center and if the current speed is above the set point speed, bars will

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