HSI Operation
EFIS-D10A Pilot’s User Guide
6-7
primary (labeled NAV) and standby (labeled SBY) bearings and a reminder of which symbol represents each
bearing is in the text area of the page.
The HS34 adds the possibility of having many more bearing sources in the system, so the behavior of the BRG
SRC button is dependent on how many devices you have connected. When you press this button, if you have
only one possible bearing source, the bearing source toggles on and off. If you have two or more bearing
sources, pressing the BRG SRC button highlights the first bearing source. Turning the value knob allows you to
choose your bearing source from all options. Pressing the bearing source again chooses the second bearing
source. If you wait more than 5 seconds without adjusting anything or pressing any buttons, the selection self-
clears.
GPS Overlay
The figure at right shows an HSI page with information sourced from a GPS
receiver while the GPS has an active flight plan between two points. The various
elements are described below.
1.
Text displays. In this area a variety of information is displayed in text
format. Displayed here is the ground track (TRK), the course (CRS),
ground speed (SPD), distance to next waypoint (DTW), and up to two
bearing pointer selections.
2.
Course indicator. The course indicator points in the direction of the
course that the GPS is reporting*. This is usually the direction of the
line between the start and end waypoints. This setting is also shown in the text area as "CRS." In a situation
with no winds, keeping the course indicator pointed straight up and in line with the heading pointer keeps the
aircraft on course. This indicator is fixed to the rotation of the DG, so it is easy to see which way you must turn
Summary of Contents for EFIS-D10A
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