Trio Avionics EZ PILOT, Operation And Installation Manual, Page: 15 / 40

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BTW 025 XTK<0.02
TRK 025 TRN?
BTW 025 XTK<0.02
TRK 025 SPD?
3.2.9.8 TRN?
The TRN? warning is displayed in this
field when the EZ Pilot detects a
negative closing velocity (going away
from the “TO” waypoint). This usually occurs when a waypoint greater than ± 90
degrees from the current waypoint is selected.
No pilot action is required.
3.2.9.9 SPD?
The SPD? warning field is presented
to the pilot when the parameters in the
GPS data stream indicate a condition
that results in an overflow of the
ETE
computation. Under normal operation, these conditions should not exist;
however, momentary corruption of the GPS data during signal acquisition or
waypoint transitioning can cause these to appear.
No pilot action is required .
Tracking functions are disabled until the condition is cleared automatically,
usually on the next GPS update. Wing leveling remains in operation.
3.2.9.10 Variable Field Scan Mode – Lower Right Line
If the DISPLAY button is momentarily pressed two times in quick succession
(double-clicked) the variable field will enter or exit the “Scan Mode”. In this mode
the waypoint designator, RNG, GS, XTK, TOP and ETE(e) fields are sequenced
in the display at a 2.5 second rate. This can be useful for sequentially monitoring
all the parameters put out by the GPS without having to manually select each
parameter.
3.2.10 CRS (Course) Mode
Assuming the TRK mode is currently selected, the CRS (course) mode is entered by
pressing the MODE pushbutton momentarily. The mode is announced when the TRK
LED is no longer illuminated and the CRS LED is illuminated.
When switching to the CRS mode the BTW
label on the left side of the top line changes
to
CRS . The three numeric characters
following CRS represent the commanded
groundtrack and are a snapshot from the
current groundtrack when the mode is
entered. For example, if the
TRK mode
groundtrack is 010 degrees when the CRS
mode is entered the commanded course will
be initialized to 010 degrees. The
TRK field
in line 2 is followed by a left or right pointing
apex (
< or > ), which shows which direction
the airplane needs to fly to get back on the
commanded track (
CRS ). The pilot now has
a clear display of the actual across-the-
ground track (
TRK ) in line 2 and the current
commanded track ( CRS ) in line 1.
NOTE : If SERVO POWER is turned on (cycled) while in the CRS mode, the current track over the ground is
automatically entered as the commanded CRS .