Eventide ARGUS 5000 - Page 12

The Argus Moving Map Display
Two more points and we'll leave this introduction and get on with operation. The first
is a caveat...
Cj The Argus is NOT a primary navigation instrument. It works in conjunction with
a GPS (internal or external), which provides position and other useful information.
The Argus is a supplemental navigation display. Your CDI doesn't know whether
you're on a radial or not; it is driven by the VOR receiver. Likewise, the Argus has
absolutely no knowledge of its present location. Whatever it is told by the GPS, it
believes. Its job is to take the latitude and longitude given it, along with the rest of
the data, and present it in pictorial form. Because of inherent inaccuracies in GPS
reception, including Selective Availability (SA), your GPS-estimated position can be
from tens to hundreds of meters in error. The GPS manufacturers tell you this, we
tell you this, and even your GPS may tell you this, either by lighting the WARN light
or by giving an accuracy estimate. The Argus faithfully depicts the precise position
given it by the GPS. It is your job to understand that, despite this apparent precision,
there is the possibility of error, possibly significant, in your position.
, , Therefore, NEVER attempt to conduct an approach solely by reference to the Argus
^ (or the GPS) unless the GPS/Argus combination is approved for approaches, and do
not attempt to use the information on the Argus screen to a greater degree of
precision than is warranted by the accuracy of the GPS navigation sensor.
The second point should be more comforting ...
While you look at the rest of this manual, you will see that you have many pages yet
to go. If you read them dutifully and thoroughly, you will know essentially everything
there is to know about the unit. We have incorporated many illustrations that depict
the subjects discussed in the text. Because almost all of the illustrations are complete
Argus "screen dumps," feel free to browse through them as necessary to make a
particular point clear. There is a lot of information here, because the Argus is a very
versatile instrument and there is a lot you can do with it.
^_y So, don't be daunted by the manual. Instead, consider the Argus itself. It's not just
versatile; it's friendly! Look at its picture; note that it has, not counting the ON-OFF-
July 1999 Argus 5000/7000 Ver. 5.xx Reference Manual Part#141003