User's Manual

Table Of Contents
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
Table 4-57: True Display Orientation Right
If Map Mode Orientation Right
Indicates:
Then True Display Orientation Right =
Track Up
True Track Angle
Heading Up
True Heading OR (Magnetic Heading
Magnetic Variation)
North Up OR Other INVALID
(28) Display Range Left/Right
The T
3
CAS Display Range input parameter is updated from the EFIS Control
Panel. The range selections are dependent on the type of Display installed.
The minimum External Sensor input accuracy accepted is 1.0 nautical mile.
F. TAWS/RWS Discrete Inputs
The specifics of the following discrete (e.g., ground/open, +28 V dc/open, definition of
open/ground states, etc.) are aircraft dependant and will be defined in the ASDB.
(1) Landing Gear Down
This Discrete input is shared between the TCAS and TAWS functions with
separate internal wiring. The T
3
CAS computer unit monitors this discrete to
update the landing gear position.
(2) Landing Flap
The Landing Flap Discrete input is used for GPWS Mode 2, GPWS Mode 4 and
Windshear Caution/Warning Calculations.
This discrete indicates whether or not the flaps are in the correct position for
aircraft landing.
(3) Terrain Inhibit
When the Terrain Inhibit switch is engaged, all TAWS aural and visual alerts are
inhibited. The Auto Pop-up feature, being based on these alerts, is suppressed
as well. The terrain image, if selected for display, is removed and a “TERRAIN
INHIBITED” message is displayed. This inhibit feature is typically used to avoid
nuisance alerts during operation around airports that are not in the terrain
database, or during approach under VFR conditions at airports in close proximity
to terrain features. The Terrain Inhibit must be manually de-selected.
(4) Steep Approach
The Steep Approach Discrete input enables Mode 1 Steep Approach alert
biasing.
This discrete is typically enabled by an Autopilot Flight Deck switch and is used
to reduce nuisance alerts during aircraft steep approach landings.
(5) Glideslope Inhibit
4-154
04 Nov 2014
34-45-29
Pub. No. 8600200-001, Revision 004
Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.