TruTrak EFIS (8300-056) - Manual (Page 3)

TruTrak Flight Systems 1 EFIS Installation Manual
February 2009 8300-056 Rev B
OPERATION OF THE BASIC FLIGHT INSTRUMENT
As with our autopilot products, extensive attention has been given to providing the
simplest operation. No sequential pressing of buttons is required to reach basic control functions
and no additional button pressing is required to set values. Starting with a clean sheet of paper the
layout of controls (two knobs and five soft keys) is sufficient to handle all EFIS and built in
autopilot control functions.
On the basic flight instrument the right hand knob is primarily dedicated to setting the
barometer and the left hand knob is primarily dedicated to setting the direction bug. Pressing the
ALT soft key sets the altitude bug to the 100 foot mark nearest the present altitude. This setting
is entered into the active state by pressing the right hand knob. If the intent is to select an altitude
the ALT button is pressed and the right hand knob is rotated to select the desired altitude. (with
the knob out steps are 500 feet and with the knob depressed steps are 100 feet.) When the altitude
has been set press the knob to ENTER the value. It will be noted that when any value is to be set
a screen showing the selection to be made will appear above the appropriate knob.
When the aircraft is within 30 miles of the destination fix the CRS labels the soft key at the
far left. To select an arrival course different from the enroute course on the HSI press CRS and
then rotate the left hand knob. When the course is set press the knob to ENTER. A computer
generated arrival procedure in which steering from the enroute course to the selected runway is
described in the special functions section.
Just above the left knob is the label [DIM] in small print. To set the dimmer press and
hold the knob in for approximately one second, then rotate to set the desired light intensity.
When this is done press the knob to exit the set mode.
When there is NO GPS FIX the directional gyro operates in the free gyro mode, and the
label above the far left soft key is SET DG. When this button is pressed the left knob is used to
set the DG to the magnetic compass. As is the case with any free gyro this procedure is to be
repeated periodically as required.