Discrete Outputs - Garmin G3X Installation Manual

15.3.9 Discrete Outputs

The GEA 24 has 2 annunciator outputs, these outputs do not require any configuration and can be
optionally wired to an external annunciator. Discrete Out 1 acts as a master warning annunciator and is
active any time a warning CAS message (Red Alert) is displayed on the PFD. Discrete Out 2 acts as a
master caution annunciator and is active any time a caution CAS message (Yellow Alert) is displayed on
the PFD. Reference Appendix E for wiring guidance.
DISCRETE OUT 1 is "master warning" - goes low when a red (warning) CAS alert is active.
DISCRETE OUT 2 is "master caution" - goes low when a yellow (caution) CAS alert is active.
The two states of these outputs are as follows:
INACTIVE: Floating (can be pulled up to externally sourced Vout in the range 0 ≤ Vout ≤ 33 VDC)
Leakage current in the INACTIVE state is typically ≤ 10 uA to ground
ACTIVE: Vout ≤ 0.5 VDC with ≤ 20 mA sink current
Sink current must be externally limited to 20 mA max
DISCRETE OUT 1 / MASTER WARNING
DISCRETE OUT 2 / MASTER CAUTION
15.3.10 Fuel Quantity
Fuel Quantity inputs have an internal pull-up resistor that can be enabled for resistive fuel sensor inputs.
The inputs can also support capacitive sensors as either voltage inputs or digital inputs. These inputs are
configured by the GDU (refer to
FUEL QTY +5V_1
FUEL QTY 1
FUEL QTY 1 GND
FUEL QTY +5V_2
FUEL QTY 2
FUEL QTY 2 GND
POS 3 HI / +5V
POS 3 / GP 3 / FUEL QTY 3
FUEL QTY 3 GND
POS 4 HI / +5V
POS 4 / GP 4 / FUEL QTY 4
FUEL QTY 4 GND
G3X Installation Manual - LRU Pinouts
Page 15-18
Pin Name
Section 18).
Pin Name
Connector Pin
J244 44
J244 45
Connector Pin
J244 5
J244 6
J244 7
J244 8
J244 9
J244 10
J244 11
J244 12
J244 13
J244 14
J244 15
J244 16
190-01115-01
I/O
In
In
I/O
Out
In
--
Out
In
--
Out
In
--
Out
In
--
Rev. L