Garmin G3X Installation Manual page 299

23.1.11 Pitch Trim Inputs
The GAD 27 has 4 active low Pitch discrete inputs that allow for manual control of pitch trim motors.
Pilot switches take priority over copilot switches when they disagree unless pilot switches are both
inactive. Copilot trim switches are optional.
These active-low discrete inputs conform to the following specification:
Low: Vin < 3.5 VDC, or Rin < 375 Ω (input active)
High: Vin > 8 VDC, or Rin > 100k Ω (input inactive)
PILOT PITCH TRIM UP
PILOT PITCH TRIM DN
COPILOT PITCH TRIM UP
COPILOT PITCH TRIM DN
23.1.12 Roll Trim Inputs
The GAD 27 has 4 active low Roll discrete inputs. Pilot switches take priority over copilot switches when
they disagree unless pilot switches are both inactive. Copilot trim switches are optional.
These active-low discrete inputs conform to the following specification:
Low: Vin < 3.5 VDC, or Rin < 375 Ω (input active)
High: Vin > 8 VDC, or Rin > 100k Ω (input inactive)
PILOT ROLL TRIM L
PILOT ROLL TRIM R
COPILOT ROLL TRIM L
COPILOT ROLL TRIM R
23.1.13 Yaw Trim Inputs
The GAD 27 has 2 active low Yaw discrete inputs.
These active-low discrete inputs conform to the following specification:
Low: Vin < 3.5 VDC, or Rin < 375 Ω (input active)
High: Vin > 8 VDC, or Rin > 100k Ω (input inactive
YAW TRIM L
YAW TRIM R
190-01115-01
Rev. AA
Pin Name
Pin Name
Pin Name
G3X/G3X Touch Installation Manual - LRU Pinouts
Connector Pin
J271 24
J271 25
J271 26
J271 27
Connector Pin
J271 28
J271 29
J271 30
J271 31
Connector Pin
J271 32
J271 33
I/O
In
In
In
In
I/O
In
In
In
In
I/O
In
In
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