190-01499-10
GTX 35R/45R Installation Manual (Non-Certified Aircraft)
Rev. 1
Page 5-5
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.
Table 5-3 Power Pins
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
Table 5-5 Power Configuration and Power Control Functions
Pin Name
Connector
Pin
I/O
AIRCRAFT POWER 1
P3251
21
I
AIRCRAFT POWER 1
P3251
42
I
AIRCRAFT POWER 2
P3251
61
I
AIRCRAFT POWER 2
P3251
62
I
AIRCRAFT GROUND
P3251
20
--
AIRCRAFT GROUND
P3251
41
--
Pin Name
Connector
Pin
I/O
POWER CONFIG
P3251
59
I
POWER CONTROL
P3251
38
I
POWER
CONFIG
POWER
CONTROL
Description
Ground
Open
Power off
Ground
Ground
Power on