4
3700 Osuna Road NE
Suite 711
Albuquerque, NM 87109
www.sandia.aero
Section 1 - General Description
1.1
Introduction
This manual describes the installation of the
SANDIA aerospace
SI-11X Electronic Course
Deviation Indicator. It is intended for use by experimental aircraft builders in experimental aircraft.
This product is not approved for installation in type certificated aircraft.
The installer must ensure that all functions are operating properly according to their intended purpose
in their particular installation.
1.2
SI-11X Product Description
The SI-11X Electronic Course Deviation Indicator is a panel mounted device to display lateral and
vertical needles from a typical navigation receiver or GPS navigator.
All information is displayed on a color 3.5” diagonal LCD display in traditional aerospace
symbology.
1.2.1
System Functions
The SI-11X performs the following functions:
▪
Display of Lateral Deviation (Either VOR, ILS or GPS)
▪
Display of Vertical Deviation (Either ILS or GPS)
▪
Display of VOR OBS Degrees
▪
Display of VOR TO/FROM indication
▪
Display of 4 Annunciations.
•
NAV or VLOC
•
GPS
•
BC (Back Course)
▪
Backlight Control (%)
Various parameters can be configured by the installer (not pilot accessible):
▪
Configuration of Analog Gain and Offsets
▪
OBS Resolver interface Ratio and Swap Rotor D/F
1.2.2
System Interfaces
The SI-11X provides a typical analog electrical interface to typical navigation receiver and GPS
navigators. B-150mVdc Left/Right, Up/Down and To/From. Unipolar 0-150mV
Left/Right, Up/Down Flags and 6 wire, resolver.
