Trio Pro Pilot Manual 4.1
17
commanded course to the left, while rotating the encoder clockwise alters commanded course to the
right. (This is somewhat comparable to a traditional “Heading Bug” function).
6 – Drift Correction (NO GPS mode only)
Rotating the encoder to the right or left allows the pilot to adjust roll TRIM either right or left by one
trim count.
This is a very fine trim adjustment
. The upper right
field in the display will provide a
graphic display of the trim position while the switch is activated and for about two seconds after the
encoder action is stopped.
If the GPS data to the Pro Pilot is unavailable, as indicated by a
NO GPS
warning, the encoder knob
switch provides a method to turn the airplane to a new heading or stabilize the aircraft in a straight
and level attitude. The pilot may monitor the rate of turn by observing the aircraft directional gyro or
compass.
7 – Entering “PREFERENCES MENU”
Pressing and holding the encoder pushbutton for more than 3 seconds causes entry into the
PREFERENCES MENU
for adjusting the parameters and features for both the horizontal and
vertical portions of the Pro Pilot. This feature is explained in Chapter 9.
V MODE Encoder Functions
If the arrow is not pointing to the right, press the
V
MODE
button
1 – Activate Climb or Descent
Press the
V MODE
button repeatedly to display the
VS SET
screen. Enter a climb or descent rate
by rotating the encoder. Pressing the encoder will initiate the function.
NOTE
: The servo must be engaged by pressing the
V NAV
button for climb or descent. If engaged, the
flashing LED(s) will confirm the execution of the commands.
2 – Activate Climb or Descent to a Pre-Selected Altitude
Press the
V MODE
button repeatedly to display the
ALT SEL
screen. Enter a destination altitude by
rotating the encoder. Rotating the encoder will increase or decrease the selected altitude in
hundreds of feet. Pressing and rotating the encoder will change the display in thousands of feet.
Pressing the encoder momentarily thereafter will first present the
BARO SET
screen to allow
correction of current altitude. A second press of the encoder (or waiting for 5 seconds to timeout)
will initiate the function.
An altitude correction can be made and the encoder pressed to activate the vertical profile. If the
encoder button is not pressed, the autopilot will automatically activate the vertical profile several seconds
after the last rotation of the encoder.
NOTE:
The climb/descent rate will be at the vertical speed selected on the
VS SET
screen or, if none
was entered, the system will use the default vertical rate that was previously entered in the
CONFIGURATION
menu.
3 – Altitude Control Functions
When the Altitude Hold is engaged, the encoder knob is used to make fine adjustments to the
altitude. It is also employed to set a desired climb/descent rate when on the
VS SET
screen, and it
is used to select a target altitude when it is on the
ALT SEL
screen.
4 – Setting the Barometric Altitude
The encoder is used to adjust the barometric altimeter (
BARO SET
) when required.