Obstructions on the Thumbnail
Only “Red” obstructions within the 5 nm range are
presented on the Thumbnail. This correlates directly to
obstructions that are rendered in red on the other functions.
Thumbnail Activation
The Thumbnail incorporates logic that will either show or
hide the thumbnail from view. It will only be shown when
there is data to be presented and will be removed if not.
For example, if there is no “Red” terrain or traffic within
5nm, the Thumbnail will be hidden from view.
The Thumbnail will not appear on the Traffic Function
page if only traffic is presented in the Thumbnail.
Correspondingly, it is not shown on the Terrain page if
only terrain is presented in the Thumbnail. This logic
eliminates redundant views that would be created by the
Thumbnail and normal views of traffic and terrain.
Additionally, the Thumbnail is disabled while operating
on the ground. This state is determined by the
‘En Route/Ground Transition Speed’ set in the System
Function page and is based on GPS ground speed.
Traffic Information Services (TIS)
There are two versions of TIS: TIS-A and TIS-B. Both
are described below.
In the TIS-A system, ground radar sensors collect target
information. The ground radar sensor then determines
the targets in the vicinity of your aircraft and their bearing
relative to your track. Up to eight of the targets are
transmitted by the ground radar sensor the next time it
communicates with your TIS-A enabled transponder. See
page 59 for TIS-A information.
In the TIS-B system, the ground radar sensors collect
target information much the same as in the TIS-A system.
However, with TIS-B, all targets collected by the ground
radar sensor are broadcast to all aircraft equipped with
UAT data link radios and that are within coverage of
UAT ground broadcast stations. See page 51 for TIS-B
information.
17
Getting Started
