82046-PG-B1
ST3400H PILOT’S GUIDE
Page 4-4
NVIS is activated through the use of an external switch or push button.
Refer to the Rotorcraft Flight Manual Supplement for your specific
ST3400H installation for details on NVIS operation.
4.6 Sensors
Sensor data is the input data fed to the ST3400H that comes from external
sources. There are no sensors inside the ST3400H. Data is derived from
the following sensors:
GPS Position
FMS Flight Plan
Compass system (AHRS, DG) (optional)
Radar Altimeter (optional)
Traffic Computer (optional)
Airdata Computer (optional)
Heading data from an AHRS or compass system is used to provide terrain
display while hovering.
4.7 Database
Databases are supplied by Jeppesen. See Chapter 17 for Terms and
Conditions regarding the use of the databases contained within the
ST3400H.
4.7.1
Coverage area of the database
The internal database of the ST3400H includes terrain, charted man-
made obstacles above 50’ AGL, and airports with runways greater than
2500 feet in length. Obstacles are shown, processed and alerted
discretely from the terrain.
The terrain and airport database coverage is provided by geographical
area. Coverage is limited to those areas between 70
N and 70
S latitude.
Obstacle data is included for most countries. Please contact Sandel for
the most current coverage information.
Note
: There is no guarantee that every obstacle is charted or that every
charted obstacle is in the obstacle database.
4.7.2 Database
updates
Updates are uploaded into the ST3400H through a USB port located on
the front right corner of the display bezel.
