AFDAU-T1 Aerial Firefighting
Data Acquisition Unit
Installation Manual
AMS-IM-1-01 Rev. 7
22 September 2021
42
Connector Pinouts
P1
– Main Connector
PIN NAME
DESCRIPTION
PIN NAME
DESCRIPTION
1
POWER INPUT
14/28 VDC INPUT
2
GPI_1
General Purpose Input,
active when grounded
20
POWER GROUND
Airframe ground input
3
GPI_2
General Purpose Input,
active when grounded
21
SHIELD GROUND
Common with pin 20,
connect shields or relay
grounds
4
GPI_3
General Purpose Input,
active when grounded
22
SHIELD GROUND
Common with pin 20,
connect shields or relay
grounds
5
GPI_4
General Purpose Input,
active when grounded
23
OUTPUT_COMMON
6
GPI_5
General Purpose Input,
active when grounded
24
OUTPUT_1
7
GPI_6
General Purpose Input,
active when grounded
25
OUTPUT_2
8
INDICATOR DATA B
C39 CLK, MSI150XM DATA
26
INDICATOR DATA A
C39 DATA
9
RS232 TX 1
RS-232 Transmit Port 1
27
RS232 RX 1
RS-232 Receive Port 1
10
RS232 TX 2
RS-232 Transmit Port 2
28
RS232 RX 2
RS-232 Receive Port 2
11
RS232 TX 3
RS-232 Transmit Port 3
29
RS232 RX 3
RS-232 Receive Port 3
12
RS232 TX 4
RS-232 Transmit Port 4
30
RS232 RX 4
RS-232 Receive Port 4
13
RESERVED
NOT CONNECTED
31
RESERVED
NOT CONNECTED
14
K1 RELAY GROUND
14 or 28 VDC Relay, -ve
side of coil
32
K1 RELAY POWER
14 or 28 VDC Relay, +ve
side of coil
15
K2 RELAY GROUND
14 or 28 VDC Relay, -ve
side of coil
33
K2 RELAY POWER
14 or 28 VDC Relay, +ve
side of coil
16
K3 RELAY GROUND
14 or 28 VDC Relay, -ve
side of coil
34
K3 RELAY POWER
14 or 28 VDC Relay, +ve
side of coil
17
K4 RELAY GROUND
14 or 28 VDC Relay, -ve
side of coil
35
K4 RELAY POWER
14 or 28 VDC Relay, +ve
side of coil
18
K5 RELAY GROUND
14 or 28 VDC Relay, -ve
side of coil
36
K5 RELAY POWER
14 or 28 VDC Relay, +ve
side of coil
19
K6 RELAY GROUND
14 or 28 VDC Relay, -ve
side of coil
37
K6 RELAY POWER
14 or 28 VDC Relay, +ve
side of coil
