Garmin G3X Installation Manual page 326

23.5.10 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 Section 27
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
If two EIS LRUs are configured, use annunciator outputs on EIS LRU#1 only.
DISCRETE OUT 1 / MASTER WARNING
DISCRETE OUT 2 / MASTER CAUTION
23.5.11 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
GDU 45X/46X systems).
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
190-01115-01
Rev. AA
for wiring guidance.
Pin Name
Section 31.4.18 for GDU 37X systems and to
Pin Name
G3X/G3X Touch Installation Manual - LRU Pinouts
Connector Pin
J244 44
J244 45
Section 32.4.25
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
I/O
Out
Out
for
I/O
Out
In
--
Out
In
--
Out
In
--
Out
In
--
Page 23-35