Honeywell
MK VI MK VIII EGPWS Installation Design Guide
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7.4.11 Windshear Caution
The MK VIII EGPWC Windshear Cautions can be configured to activate any of the discrete outputs. Depending on
configuration, the Caution discrete will typically drive its own output lamp or provide a discrete output to other aircraft
systems.
7.4.12 Steep Approach Discrete
The Steep Approach discrete is active whenever Steep Approach has been selected via the pilot (or an Envelope
Modulation steep approach case is active) and is typically used to drive a lamp in the Steep Approach switch. For standard
steep approach selection method (alternate action switch) this discrete is not provided as the switch must be self lighting.
For Discrete I/O category IDs that supply a momentary Steep Approach Switch this lamp driver output is provided to light
the switch.
7.5 System Configuration Status
The EGPWC indicates the current hardware, software, databases, Category states and input discretes detected by the system.
Each configuration item has an associated configuration message. This is the message that will be read out during Present
Status on the RS-232 interface or voice output during Self Test Level 3 to inform the user of the current configuration.

TABLE 7.5-1: CONFIGURATION OPTIONS AND MESSAGES

Selected Option/Condition Configuration Message
Category 4 (Smart Callout Selected) SMART CALLOUT SELECTED
Category 6 (TA&D Disable) TERRAIN AWARENESS DISABLED
TERRAIN CLEARANCE FLOOR DISABLED
Category 7 (Flap Reversal Select) FLAP WOW REVERSAL SELECTED
Category 7 (Bank Angle Enable) BANK ANGLE SELECTED
Category 7 (TA&D Alternate Pop Up) ALTERNATE POP UP SELECTED
Category 7 (Obstacle Awareness Enabled) OBSTACLE AWARENESS ENABLED
Category 7 (Peaks Mode Enabled) PEAKS MODE ENABLED
Category 7 (WGS84 Reference Selected) GPS ALTITUDE REFERENCE WGS 84 SELECTED
Category 7 (MSL Reference Selected) GPS ALTITUDE REFERENCE MSL SELECTED
Category 7 (Steep Approach Enabled) STEEP APPROACH ENABLED
Alternate Action Steep Approach Discrete #2 input discrete
activated
STEEP APPROACH SELECTED
Category 7 (Steep Approach Enabled) AND Alternate Action
Steep Approach Discrete #2 input discrete activated
STEEP APPROACH ACTIVATED
Category 7 (Steep Approach Enabled) AND Momentary Steep
Approach switch configured and Steep Approach (latch)
activated
STEEP APPROACH ACTIVATED
Glideslope Inhibit input discrete activated GLIDESLOPE INHIBITED
Mode 6 Volume Control Discrete Selected MODE 6 LOW VOLUME SELECTED
GND Audio Suppress (Inhibit)/All Modes Inhibit Discrete
Selected OR +28 V Audio Suppress (Inhibit)/All Modes Inhibit
Discrete Selected
EXTERNAL EGPWS INHIBITED
Note: Will only occur for present status as this condition
inhibits self tests
Terrain Awareness & TCF Inhibit input discrete activated TERRAIN AWARENESS AND TCF DISABLED
GPWS Inhibit input discrete activated GPWS INHIBITED
Note: Will only occur for present status as this condition
inhibits self tests