Trio Avionics Pro Pilot - Manual (Page 20)

Trio Pro Pilot Manual 3.8
20
No H MODE LEDs will be illuminated until valid GPS data is available.
Normal Power Up Display, GPS Active
On power up, once the BARO SET has been performed, the Pro Pilot defaults to the H MODE display
and the TRK mode of operation when valid GPS data is available.
The image shows the Pro Pilot display with a good
GPS signal present, and flight plan entered. Note
that the “H” (H NAV) LED is illuminated.
This indicates that the roll servo has been activated
by pressing the H NAV button and the Pro Pilot is
providing horizontal navigation, having taken control
of the roll axis of the aircraft.
To view and control horizontal functions at any time
it is necessary to press the H MODE button one time
to transfer encoder control to the H NAV functions.
The mid upper arrow will point to the left. No
navigational changes will occur.
Track Display Information
Bearing To Waypoint Field (BTW)
The bearing to waypoint (BTW) field is located on the left side of the top line as illustrated. This field is
updated whenever the GPS data to the Pro Pilot is refreshed, normally once every one or two seconds,
depending on the GPS interface data rate. (A GPS with NMEA data output generally updates once every
two seconds, while an Aviation Data Link updates once every second). BTW is the exact magnetic
bearing from the current aircraft position to the next GPS route waypoint.
Note: The line directly below the BTW data contains the current track (TRK) information (if these two
numbers are identical, the aircraft is tracking directly to the destination waypoint regardless of the
actual magnetic
heading of the aircraft).
Ground track Field (TRK)
The ground track (TRK) field is located on the line directly
below the “Bearing to Waypoint” (BTW). The TRK field is the
current track over the earth based on the GPS updates every
one or two seconds.
Variable Field, Top Line
The right side of the upper line of the display may be changed to present any data derived from the GPS
available in the bottom line right field or an electronic rate of turn display. The factory default display is to
present the information shown, but the user may wish to otherwise configure this segment. The top line
variable field may be changed by repeatedly pressing the encoder knob while in the Track (TRK) mode.
Rotating the encoder will change the variable field in the bottom line. “Double clicking” the encoder knob
will cause the bottom line variable field to continually sequence through all available information.
“Double clicking” again will exit the scan mode.