190-01115-01 G3X/G3X Touch Installation Manual - GDU 37X Config and Post Install Checkout
Rev. AC
Page 33-124
33.4.19.3.2 Engine/Airframe Input Configuration Items
This section briefly describes how to configure the engine/airframe inputs for each supported sensor type,
using the Engine Configuration page. Where applicable, differences between the GEA 24 and GSU 73 are
noted. Refer to
for wiring guidance.
CHT (Cylinder Head Temperature)
Thermocouples: Up to six thermocouples can be connected to the CHT thermocouple inputs on the GEA
24 or GSU 73. Both J-type and K-type thermocouples are supported. Select 1, 2, 4, or 6 cylinders of CHT
thermocouple monitoring.
Rotax CHT sensors: Rotax CHT sensor part numbers 965531 and 966385 are supported. For the GEA 24,
Rotax CHT sensors are configured using the same CHT input page but are connected to different GEA 24
input pins (
). For the GSU 73, Rotax CHT sensors are connected and configured using the
GSU 73 general purpose (GP) inputs (
).
Exhaust Gas Temperature (EGT)
Thermocouples: Up to six Type-K thermocouples can be connected to the EGT thermocouple inputs on the
GEA 24 or GSU 73. Select 1, 2, 4, or 6 cylinders of EGT thermocouple monitoring. If Lean Assist using
EGT is desired, change the Lean Assist setting to "Enabled". (see
for more information).
Rotax 912iS/915iS: For the GEA 24, select "Rotax FADEC" as the EGT configuration to use EGT data
from the Rotax 912iS/915iS FADEC interface.
NOTE
The EGT 6/MISC PRESS input on the GSU 73 has multiple functions. If the GSU 73
EGT 6/MISC PRESS input has been configured for a sensor that is not an EGT
thermocouple, only four EGT thermocouples can be configured.
Turbine Inlet Temperature (TIT)
One or two Type K thermocouples can be connected for turbine inlet temperature monitoring, using the
TIT 1 and TIT 2 inputs on the GEA 24 or GSU 73. If Lean Assist using TIT is desired, change the Lean
Assist setting to "Enabled". (see
for more information).
