Power - Garmin GTX 45R Installation Manual

5.3

Power

The GTX 35R/45R is compatible with 14 VDC and 28 VDC aircraft electrical systems. The AIRCRAFT
POWER 2 input is diode-isolated from AIRCRAFT POWER 1 and is used for connecting to an alternate
power source, such as on an aircraft with two electrical buses.
Pin Name
AIRCRAFT POWER 1
AIRCRAFT POWER 1
AIRCRAFT POWER 2
AIRCRAFT POWER 2
AIRCRAFT GROUND
AIRCRAFT GROUND
5.3.1 Power Configuration and Control Inputs
The POWER CONFIG input must be connected to ground.
The POWER CONTROL input can be used as a remote power on/off control. In most installations,
POWER CONTROL is connected to ground, which causes the unit to automatically power on when power
is applied.
Table 5-4 Power Configuration and Control Inputs
POWER CONFIG
POWER CONTROL
Table 5-5 Power Configuration and Power Control Functions
POWER POWER
CONFIG CONTROL
Ground Open
Ground Ground
190-01499-10
Rev. 1
Table 5-3 Power Pins
Pin Name
Power off
Power on
GTX 35R/45R Installation Manual (Non-Certified Aircraft)
Connector
P3251
P3251
P3251
P3251
P3251
P3251
Connector Pin
P3251 59
P3251 38
Description
Pin I/O
21 I
42 I
61 I
62 I
20 --
41 --
I/O
I
I
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