GRT Avionics, Inc.
May 2019
Sport SX Install. Manual
2
Rev. A
1-2: Certification
The GRT Sport EFIS is not certified for installation in FAA Type Certificated Aircraft. It is
designed and intended for installation in VFR aircraft licensed as Experimental or Light-
Sport.
1-3: System Description and Architecture
The GRT Sport SX EFIS consists of a panel-mounted Display Unit and a remotely-
mounted magnetometer. The Sport SX is available in two configurations: one for use as
a Primary Flight Display (PFD) and one as a Multifunction Display (MFD). The two models
are designated as S200 (PFD) and S100 (MFD).
The display unit provides a graphical display of primary flight data, moving map/HSI and
engine data. The display of engine data requires the EFIS to be connected to a GRT
Engine Information System (EIS) Engine Monitor. Dimensional drawings for the Sport SX,
Sport HS and Sport WS display units along with the magnetometer are provided in the
Appendix
sections
A-
1: 6.5” Sport SX Mounting Template
,
A-
2: 8.4” Sport SX
Mounting Template
,
A-3: Sport HS Mounting Template
,
A-4: Sport WS Mounting
Template
and
A-5: External Module Diagrams
.
The GRT Sport EFIS may be operated as a single or multiple screen system. Within each
display unit is a processor, power supply and screen that allow it to process and display
information independent of another EFIS display unit (except for unique data that may be
coming from other display units). This allows multiple screens to provide redundancy.
Multiple screens are normally linked together via a serial inter-display link to share pilot
entries, such as baroset, dimming, flight plan, etc
…
Interfacing to other systems is accomplished via serial ports, and in some cases, the USB
port. The Sport SX is also connected to the aircraft pitot/static system for sensing
airspeed, altitude and vertical speed. The internal AHRS provides roll and pitch attitude
data. When a magnetic heading is provided via the remote magnetometer, the gyro
heading data is also provided. Without the magnetic heading data from the
magnetometer, gyro-stabilized GPS ground track is provided. The GRT AHRS is unique
in the industry in that it can provide attitude data without external aiding from air data or
GPS.
The Sport SX EFIS display units have two model numbers. The S200 is used as the
primary flight display (PFD) in a multi-display system, or the only display in a single-
display system. It contains the AHRS, Air Data Computer and altitude encoder for the
transponder. It may also contain the optional Internal GPS, but this is typically installed in
the secondary unit in multi-unit systems.
The S100 is used as a multifunction display (MFD) or slave unit.
It’s never used as the
primary unit. It does not contain an AHRS, air data computer or encoder, but may contain
the Internal GPS, if optionally ordered. The S100 may be used to display map and
