Eventide ARGUS 5000 - ADF Display

time, if you maneuver the aircraft, the map orientation will lag behind, and you will not
immediately have a good picture of your direction of travel. Heading is updated
almost instantaneously, and the map response is correspondingly better, especially on
the lower ranges that are used when maneuvering in a traffic pattern or under ATC
control.
Another advantage of using magnetic heading is that it is always available. Nav
receivers depend upon aircraft motion to determine your track since, by definition, you
don't have one when you are standing still. If you taxi slowly, GPS track can be erratic
and Loran track nonexistent. Hence, heading orientation is very useful while on the
surface of an airport.
Flying while heading-oriented gives you an excellent picture of the wind direction and
velocity. If you set the Argus or your GPS for a destination and select a courseline to
be displayed, the courseline will go from the symbolic aircraft to the destination. If
you are oriented to heading, the courseline will, except in the case of a direct head- or
tailwind, be slightly offset from straight ahead. The degree of difference is due to the
amount of wind correction you must apply, and the visual depiction of this angle on
the map display is potentially useful.
ADF Display
The first line of the first AMEND page selects under which circumstances you wish to
display the ADF pointer. You can show it in PLAN ONLY, MAP ONLY, MAP AND
PLAN, or you can select ADF MODE, in which case nothing but the ADF is shown.
(Of course, you can choose not to show the ADF at all.)
Because the Argus can replace, as well as supplement, the ADF indicator, there is a
choice that can be made when installing the Argus that causes it to automatically
power up in the ADF mode. This is required for FAA approval, and is a good idea,
since a pilot unfamiliar with your aircraft may not know how to select the ADF mode
on the Argus and hence may be deprived of its use. If you select ADF MODE in
AMEND, the Argus will always power up (and remain in) ADF MODE. If you select
any other ADF option and the Argus is programmed to power up in ADF MODE, you
^-^ can go into your selected mode simply by entering and exiting the AMEND mode
without changing anything. The easiest way to do this is with four quick presses of
July 1999 Argus 5000/7000 Ver. 5.xx Reference Manual Part#141003 27