ADS-B FDL-978 Series and
Lite Series Installation Manual
Document No. 87343 Rev G
FFS Copyright © 2016 All rights reserved.
12-9
J1 - Power and I/O Connector (DB-44)
PIN
SIGNAL
ELECTRICAL
I/O
DESCRIPTION
33
Control Data Out
RS-232
O
Control Data RS-232 Data Out
34
Reserved
N/A
-
N/A
35
Reserved
N/A
-
N/A
36
Reserved
N/A
-
N/A
37
Reserved
N/A
-
N/A
38
Reserved
N/A
-
N/A
39
Reserved
N/A
-
N/A
40
Reserved
N/A
-
N/A
41
UAT STATUS
Open/Ground
O
ADS-B Status
42
Wi-Fi Module Output
RS-232
O
Wi-Fi Module or MPI RS-232 Data Out
43
Reserved
N/A
-
N/A
44
Reserved
N/A
-
N/A
12.7.2
Interface Details
Refer to Section 2.5 - Interface Details.
12.7.3
Power Input
Refer to Section 2.5.1 - Power Input.
12.7.4
Status LEDs
Refer to Section 2.5.3 - Status LEDs.
12.7.5
Remote Power Control
Refer to Section 2.5.4 - Remote Power Control.
12.7.6
TC978 Controller Interface
Refer to Section 2.5.5 - TC978 Controller Interface.
12.7.7
Control Data Interface
The control data interface is used to connect to a GTX Series (330/33/327/32) transponder for
controlling Squawk Code, IDENT, and mode (standby/alt inhibit) to the FDL-978 Lite Series
UAT. If no transponder is connected to this interface than the FDL-978 Lite Series will monitor
any on-aircraft mode A/C transmissions to control Squawk Code and IDENT. The TC978 is
used to control the UAT if no transponder is present on the aircraft. The control data interface
pins are as follows:
