EFIS Configuration
The following serial port settings are made from the “Set Menu”, “General Setup”
GRT EFIS Setting
(Set Menu – General Setup)
Required Setting
With EFIS controlling
Safe-Fly GPS
Required Settings
No EFIS control of Safe-Fly (Includes
WS and HS)
Flight ID (In Flight ID and
Address sub-menu)
Set to aircraft N-number Not required
Mode S Address Set to Mode S Address
(Hex) from FAA
registration
Set to Mode S Address (Hex) from FAA
registration
Serial Port X* In Safe-Fly GPS and SPC NMEA0183 GPS
Serial Port X* Out Safe-Fly GPS and SPC Not Applicable – Not Used
Serial Port X* Rate 115,200 9600
SPC Serial Port 1 Rate 38400 Not Applicable
SPC Serial Port 1 Output EchoUAT TMAP Not Applicable
SPC Serial Port 1 Input EchoUAT TMAP Not Applicable
Serial Port Y* In ADS-B ADS-B
Serial Port Y* Rate 115,200 115,200
TT22/EchoUAT Settings Required – See below Not Used
*Serial port “X” refers to the serial port on the EFIS that is wired to the “Serial Control In/Out” of the
Safe-Fly GPS module. Serial port “Y” refers to the serial port used to receive ADS-B data into the
EFIS. These will be different serial ports. For example, Serial port “X” could be Serial port 1, and
Serial Port “Y” could be Serial port 2 (depending on what serial ports are not already in use and are
high-speed in your EFIS will determine the serial ports you can use.)
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Safe-Fly 2020 GPS – Rev P GRT Avionics, Inc
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