Garmin G3X - 23.1.3 Terminal Block (TB273) Connector

190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page 23-4
23.1.3 Terminal Block (TB273) Connector
Figure 23-3 TB273 on GAD 27, as viewed looking at connector on unit
NOTE
Keep Alive Power In (Pin 1, TB273) can be used as a second power input for the GAD 27.
NOTE
The Keep Alive Power VOut output is a short term voltage stabilizer intended to keep
essential avionics online during engine start. This output is not intended to be the only
source of power for any LRU.
Pin Pin Name FUNCTION I/O
1 KEEP ALIVE POWER IN
INPUT POWER FOR “KEEP ALIVE” BUS
(+5VDC INPUT MIN.)
In
2 KEEP ALIVE POWER VOUT
OUTPUT POWER FOR “KEEP ALIVE” BUS
(GREATER OF +12VDC OR INPUT POWER,
3.5 A OUTPUT MAX.)
Out
3 LIGHT 1 POWER
INPUT FOR LIGHT 1 (FUSE TO LESSER OF
10 A OR ACTUAL LIGHT RATING)
In
4 LIGHT 2 POWER
INPUT FOR LIGHT 2 (FUSE TO LESSER OF
10 A OR ACTUAL LIGHT RATING)
In
5 FLAP POWER IN
INPUT FOR FLAP MOTOR (FUSE TO LESSER
OF 10 A OR ACTUAL FLAP MOTOR RATING)
In
6 FLAP POWER GROUND
GROUND RETURN FOR FLAP MOTOR
CURRENT, MUST HAVE DEDICATED
GROUND WIRE
--
7 FLAP POWER OUT 1
10 A POWER OUTPUTS TO DRIVE MOTOR
UP OR DOWN
Out
8 FLAP POWER OUT 2 Out
9 LIGHT 1 OUTPUT
10 A ACTIVE HIGH POWER OUTPUT FOR
LIGHT 1
Out
10 LIGHT 2 OUTPUT
10 A ACTIVE HIGH POWER OUTPUT FOR
LIGHT 2
Out