190-01115-01
G3X/G3X Touch Installation Manual - Engine/Airframe Sensor Installation
Rev. AC
Page 23-13
23.2.6 Rotorcraft Applications
Rotorcraft engine monitoring can be accomplished with a GDU 4XX system, using the engine sensor
application information in
through
. Typically, the GEA 24 RPM 1 input is
used to monitor rotor RPM.
A GDU 4XX system using two GEA 24 units can be used to monitor engine information for a twin-engine
rotorcraft, as described in
Table 23-12 Sensors for Rotorcraft Applications
Sensor Type
Details
Rotor RPM
Select "Custom" configuration for GEA 24 RPM1 input and enter frequency-
to-RPM calibration. A Sandia ST26 tachometer signal converter may be
required to provide proper digital signal conditioning.
Engine RPM
Select appropriate configuration for GEA 24 RPM 2 input as described in
through
.
Other engine sensors
Select appropriate sensors and configuration as described in
through
.