2 INSTALLATION PLANNING AND PROCEDURES
The ST3400H has been designed to ensure maximum interoperability with external avionics.
Contact Sandel with any questions about interfacing to specific avionics equipment not covered
in the installation drawings in this manual.
2.1 General Information
To simplify installation, after signals are wired to the ST3400H pins, on-screen setups are used
in a post-installation procedure. Maintenance menu pages provide a function selection
capability. For most equipment, selections are made by equipment make and model.
Refer to the installation schematics section 12 of this manual, for details on connecting
required components.
2.2 Supported Sensor/Equipment Configurations
2.2.1 Required Sensors/Equipment
•
GPS position
•
Gear (only if the helicopter has retractable gear).
•
Audio system with available unswitched input.
2.2.2 Optional Sensors
•
Heading
Display: Provides no-track terrain display
•
GPS Flight plan Display: displays flight plan line
•
Radar Altitude
GPWS: Provides callouts;
•
Airdata
GPWS: improves accuracy of certain modes
•
LOC/GS
GPWS: adds Glideslope alert
2.2.3 Recommended Optional Sensors
A Heading Sensor is highly recommended; without a heading system no terrain will be
presented on the display during hover operations or on-ground. When in maintenance mode,
with no heading system and track invalid, unit displays North Up.
Radar Altitude is highly recommended. This not only supplies numerous GPWS alerts, but
provides altitude callouts which provide an additional safety benefit.
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ST3400H INSTALLATION MANUAL
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