Trio Avionics Pro Pilot - Manual (Page 14)

Trio Pro Pilot Manual 3.8
14
H MODE and V MODE buttons
The H MODE switch controls the selection of the TRK (track), CRS (course) and INT (intercept) modes.
With GPS data present, the default mode during power up is TRK.
Pressing the H MODE switch repeatedly advances the display screen from:
TRK ---> CRS ---> INT and then back to TRK.
The appropriate LED illuminates in each mode.
No H MODE LEDs will illuminate until valid GPS
data is available.
At any time while in the INT mode, the pilot may
transition to the TRK mode, or through TRK to CRS
mode, by pressing the H MODE switch.
The V MODE switch controls the selection of the ALT HLD (altitude hold), AS/VS (airspeed/vertical
speed), and ALT SEL (target altitude set) modes.
Pressing the V MODE switch repeatedly advances the display screen from:
ALT HLD ---> AS/VS ---> ALT SEL
 BARO SET.
The appropriate LED illuminates to signify data has been changed or entered on that screen. The ALT
HLD LED is illuminated when the altitude hold mode is active, or the VS mode is active and the vertical
rate is set to zero. The ALT HOLD mode LED will flash to indicate that an executed fine altitude
adjustment is in progress.
The H NAV button also provides the “AUTOMATIC COURSE REVERSAL” feature which
does an automatic roll servo engagement and ground track reversal. Please see page
27 for operation instructions for this feature.