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Table of Contents
Revision History........................................................................................................................................4
Description.................................................................................................................................................5
Compatibility.........................................................................................................................................5
Use with Non-Compatible GRT and other systems..............................................................................5
GPS Function........................................................................................................................................6
Multiple GPS Configuration for your GRT EFIS..................................................................................6
GPS Status Display (This section is preliminary).................................................................................6
Serial Data Combiner/Expander Function............................................................................................7
Power and Ground.................................................................................................................................8
Serial Ports............................................................................................................................................9
Default Safe-Fly Configuration.............................................................................................................9
EFIS Configuration Settings...............................................................................................................10
Trig TT31............................................................................................................................................13
Sandia..................................................................................................................................................15
Uavionix..............................................................................................................................................15
Operation without EFIS Control (Also Legacy Horizon WS and HS models)...............................15
EchoUAT Settings - (Required).......................................................................................................15
EFIS Configuration..........................................................................................................................16
EFIS Configuration - TT22/EchoUAT Settings...............................................................................17
Wiring – GRT SafeFly to EchoUAT for Current GRT EFIS Models..............................................20
Wiring – GRT SafeFly to EchoUAT with no EFIS control (Including Sport and Horizon WS and
HS Models)......................................................................................................................................21
Safe-Fly with EchoUAT Post-Installation Checkout Procedure......................................................22
No ADS-B output.............................................................................................................................23
SIL or both SIL and SDA fails in report with Safe-Fly and echoUAT............................................24
Only SDA fails in report with Safe-Fly and echoUAT:...................................................................24
Only NACv fails with Safe-Fly and echoUAT operating without EFIS control:............................24
NACv fails in installations with EFIS control:................................................................................24
Baro Alt fails at a high percentage in Transponder Monitor mode:.................................................24
Transponder replies only when transponder is interrogated With EchoUAT..................................24
Mode 3A fails at a high percentage in Transponder Monitor mode................................................25
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Safe-Fly 2020 GPS – Rev P GRT Avionics, Inc
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