Dynon Avionics EFIS-D10A Pilots Users Guide - Manual (Page 57)

HSI Operation
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 se
which way you must turn to get on course. The course indicator is only present when you have an active fligh
plan in your GPS and are navigating to a point.
*Some GPS units do not report course direction. In this case, a COURSE menu item is made available in the
HSI menu to manually set it.
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ion.
3. Course Deviation Indicator (CDI). When a flight plan is active in the GPS, the CDI indicates
how far to the left or right of your selected ground course you are (CDI in large oval at right).
Depending on the scale that you are in, each dot indicates 0.06 n.m. (Approach), 0.2 n.m.
(Terminal), or 1.0 n.m. (Enroute). When on course, the course indicator and the CDI make a
solid line, making it easy to see when there is little error in your aircraft's position. Unlike a
CDI indicator found in basic aircraft, the CDI needle on an HSI rotates with the DG and
course indicator. By turning the aircraft towards the CDI needle so the CDI needle is "on top"
of the course line you reduce your deviat
4. To indicator. There is no "from" indication with GPS data, since the GPS is the source of the
course line. This arrow always points the same way as the course line, as indicated in the small
oval at right.
5. Vertical Guidance Indicator. When connected to a Garmin 396/496 the glideslope indicator mimics the GPS’s
vertical guidance display. This appears only when a VNAV profile is active on the GPS.
When the HS34 is connected to a WAAS-enabled GPS that can provide vertical guidance, this vertical guidance
is displayed as specified by your GPS user manual.
6. Bearing to waypoint (BTW) indicator. This thin yellow diamond shows the bearing to the destination waypoint.
The diamond points in the direction you would need to fly from your present location to the waypoint. When
6-8 EFIS-D10A Pilot’s User Guide