L3 Technologies AFIRS228S ユーザーズマニュアル
AFIRS 228S Iridium Global Communications System Installation Manual
16 July 2014
L-3 Aviation Recorders Proprietary
Page 24
165E5733-00 Rev. 03
Table 3-3 – J1C Bottom Plug (BP) Insert
Pin
Size
Description
1
20
Not Used
2
12
Primary 28 VDC Power Input
3
12
Power Ground
4
20
Not Used
5
20
Not Used
6
20
Not Used
7
12
Not Used
8
16
Chassis Ground
9
16
Not Used
10
16
Not Used
11
16
Not Used
12
5
Not Used
13
5
Iridium/GPS Antenna
Figure 3-9 – SDU Connector Map
3.5.2 Power Input
The Iridium SATCOM System is powered by +28 VDC.
3.5.3 Chassis Ground
Quantity
1
Format
DC Chassis Ground
For redundant chassis ground connection only.
Not to be used as a normal current carrying conductor.