Trio Avionics EZ Pilot - v 1.9 - Manual (Page 13)

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BTW 025 XTK<0.02
TRK 025 KLAX
BTW 025 XTK<0.02
TRK 025 GS 200
BTW 025 XTK<0.02
TRK 025 ETE 2:21
or left of the desired track (DTK). The maximum value in this field is 9.99 miles.
A positioning symbol, immediately preceding the numerical data, indicates the
"fly to" direction required to null this error. If this symbol has its apex to the left
(<), the autopilot will fly to the left to eliminate the error. Conversely, if the apex
is to the right (>) the autopilot will fly to the right to eliminate the error. Here the
aircraft is just .02 miles to the right of the desired track, so the autopilot will fly to
the left to resume correct DTK.
3.2.8 TRK (Groundtrack Field)
The groundtrack (TRK) field is located on the
line directly below the “Bearing to Waypoint”
(BTW) field on the extreme left side. The TRK
field is the current track over the earth based
on the GPS updates every one or two seconds.
3.2.9 Variable Fields, Bottom Line
The bottom line, extreme right field is another variable field used to display other tracking
data of interest to the pilot. The possible data fields displayed are:
• GS
groundspeed, closure speed to the destination waypoint
• ETE
estimated time en-route, in hours and minutes format
• ETe
estimated time en-route, in minutes and seconds format
• RNG distance from the current “TO” waypoint
• (WPT) "TO" waypoint identifier *
• (TC)
Digital graphic turn coordinator display *
• DIS? Distance tolerance error indicator
• TRN? Turn tolerance error indicator
• SPD? Speed tolerance error indicator
• TOP
Track Offset Position indicator
* no associated label field displayed
Each field above except the DIS?, TRN? and SPD? fields is selected by pressing the
DISPLAY switch momentarily. The DIS?, TRN? and SPD? fields are automatically
displayed to indicate GPS data anomalies as described below. The ETE or Ete label
format is selected automatically by the autopilot. The TOP field will not be displayed if
the TOP value is 0.00 (no offset).
3.2.9.1 GS (Groundspeed)
The GS (groundspeed) field indicates
the aircraft speed over the ground in
the units (miles per hour or knots) as
selected on the host GPS system.
This field is limited to a maximum value of 999 miles/knots per hour.
3.2.9.2 ETE (Estimated Time En-route, HH:MM)
The ETE (estimated time en-route)
field shows the time to the current
waypoint based on the closing velocity
(NMEA link only) to the waypoint
(which may be different from the groundspeed GS/distance calculation