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EFIS/One uses
a set of airdata sensors to compute Airspeed, Altitude, Manifold
Pressure and Gyro Suction with a solid-state inertial platform
to drive the Altitude and Flight Director display. It's a completely
self-contained, all-electronic package. The HSI is derived from
a three-axis solid-state magnetometer in conjunction with the
inertial platform to provide a stable heading display with no
acceleration or turning errors. You can roll the airplane and
the compass stays nailed. The HSI flies like a gyro except you
never set it, cage it or adjust it. A chart DVD is slaved to
the internal 12 channel GPS receiver to provide a continuous moving map
display and position readout. If you want to fly someplace, just spin
up the identifier, or name of the airport or city for a sounds-like
match. You can navigate direct-to just about anywhere. All the public
and military fields are loaded up by default and the private ones can
be turned on with a configuration switch. EFIS/One includes an OAT sensor for automatic
Density Altitude and TAS display, and fuel flow circuits for
the popular FloScan 264 sensors. 16 engine gauges are displayed
as 2 sets of 8 sensors each, and can be setup to read voltage,
resistance, differential voltage or thermocouple inputs. A separate
screen is used for Setup and Calibration, and sensors can be
calibrated to read out any desired unit from sensors providing
a voltage, resistance or pulse train between 0 & 10 volts.
You can, for example, choose to display
fuel quantity in gallons, pounds or whatever as well as choosing
how it is displayed. As an example, oil pressure can be reported
to the nearest pound, and RPM to the nearest 5 revolutions, while
buss voltage is reported to the nearest 1/10 of a volt. The system
computes a set of third-order splines for every sensor to smooth
out non-linearities, and an optional median-cut FIR filter is
available on each channel to provide that mechanical, fluid-damped
look for fuel levels or anything else that sloshes or vibrates.
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