Electrical Connections; Interface - Db-44 Pinout - FreeFlight ADS-B FDL-978 Series Installation Manual

ADS-B FDL-978 Series and
Lite Series Installation Manual
Document No. 87343 Rev F

12.7 Electrical Connections

12.7.1 Interface – DB-44 Pinout
PIN SIGNAL
1 Vin
2 GND
3 Control Data In
4 Reserved
5 Reserved
6 Reserved
7 Reserved
8 Reserved
9 Altitude Input Gnd
10 Reserved
11 Reserved
12 Anonymous Mode
13 Reserved
14 Reserved
15 Reserved
16 Vin
17 RTRN
18 Vcp
19 Wi-Fi Data Gnd
20 TC978 Data +
21 TC978 Data -
22 GND
23 Reserved
24 Reserved
25 Altitude Input Data
26 Wi-Fi Module Input
27 AIR/GRND
28 TX SUPPRESS
29 Reserved
30 Reserved
31 RTRN
12-8
J1 - Power and I/O Connector (DB-44)
ELECTRICAL I/O DESCRIPTION
10-40 VDC Pwr Aircraft Power Input
Ground Gnd TC978 Controller Power Return
RS-232 I Control Data RS-232 Data In
N/A - N/A
N/A - N/A
N/A - N/A
N/A - N/A
N/A - N/A
Serial Ground Gnd Altitude Input Ground
N/A - N/A
N/A - N/A
Open/Ground I Anonymous Mode, Active Low
N/A - N/A
N/A - N/A
N/A - N/A
10-40 VDC Pwr Aircraft Power Input
Ground Gnd Aircraft Power Return
5.5-10 VDC O TC978 Controller Power Output
Serial Ground Gnd Wi-Fi Data Ground
RS-485 I/O TC978 RS-485 Data+
RS-485 I/O TC978 RS-485 Data-
Gnd Gnd Ground Reference
N/A - N/A
N/A - N/A
RS-232 I Altitude Input RS-232 Data In
RS-232 I Wi-Fi Module or MPI RS-232 Data In
Open/Ground I Air/Ground In (Squat Switch - configurable)
Vin -1.5V O L-Band Suppression Bus
N/A - N/A
N/A - N/A
Ground Gnd Aircraft Power Return
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