ESI-500
Pilot’s Guide3-16
Display Features
TO/FROM Indicator
The ‘TO’ / ‘FR’ indication is located to the right of the navigation source
annunciator, in the lower left corner of the attitude display area. This
indication is a VOR and GPS OBS function. Refer to Figures 3-10 and
3-12.
In GPS OBS mode, the To/From indicator shows the GPS navigation
mode to or from the waypoint.
In VOR mode, the To/From indicator shows the aircraft’s relationship
to the selected course.
In VOR mode, the ‘TO’ indicator is displayed when the selected
course is < 85° from the relative bearing to the VOR. The ‘TO’ indicator
is replaced by the ‘FR’ indicator when the selected course becomes
> 95° from the relative bearing to the VOR. See Figure 3-13 (A).
In VOR mode, the ‘FR’ indicator is displayed when the selected course
is > 95° from the relative bearing to the VOR. The ‘FR’ indicator is
replaced by the ‘TO’ indicator when the selected course becomes
< 85° from the relative bearing to the VOR. See Figure 3-13 (B).
In VOR mode, the To/From indicator and the lateral deviation indicator
may be removed while the VOR omnibearing signal is unavailable,
such as when passing over the VOR station.
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