Eventide ARGUS 5000 - Waypoints, Courselines and the Simulated CDI; Courselines in Direct To Mode; Courselines in Flight Plan (LEG) Mode

Waypoints, Courselines and the Simulated CDI
The Argus has a provision for displaying a courseline between two (or more)
waypoints. Whether this courseline is displayed is determined by the pilot's preference.
The AMEND mode allows selection of courseline in MAP, PLAN, both, or neither.
For clarity, most of the illustrations in this manual do not show the courseline.
However, the courseline display is a powerful feature for helping the pilot visualize and
follow his flightplan, and most Argus users prefer to leave it ON for MAP and PLAN.
The AMEND mode description shows how to select it; this section shows how to use
it.
Courselines in "Direct To" Mode
130° BRG TK
12.7 NM 130'
159 kts
LO°TE
DEP/15
It is very important to know that the courseline, while
displayed on the Argus, is, in effect, generated by the
GPS. In order to display a courseline, at least two points
must be defined. These points are typically entered into
the GPS as the "TO" and "FROM" waypoints. For
instance, if you are navigating to airport ABC from
navaid XYZ, you will select ABC as your TO waypoint,
and XYZ either as your FROM waypoint, or, if you're
currently flying over it, as "present position FROM," in
typical GPS terminology. Should you deviate or stray
from your course, the GPS will show you being a certain
amount off-course (XTRACK or CROSSTRACK
distance), and the Argus screen (and CDI) will agree with
this calculation. If you then press the "present position
FROM" button or "Direct TO" on your GPS, the
XTRACK distance will go to zero, since, hi effect, a new course from your present
position to your destination has been programmed into the GPS. The Argus display
follows this change by redrawing the courseline from the current position of the
symbolic airplane to the destination, while zeroing the Argus' simulated CDI. (The line
is drawn, in effect, from the destination back through the FROM point or present
position. Thus, the line will terminate at your destination.)
Courselines in Flight Plan (LEG) Mode
FROM:NO7 TorTEB
CDI: ON-COURSE
July 1999 Argus 5000/7000 Ver. 5.xx Reference Manual Part#141003 52