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

2.4

Electrical Connections

2.4.1 Interface – DB-44 Pinout
*Serial Port 5 is not available on the 87098-00 and 87098-10 Transceivers.
**Serial Port 6 can be optionally configured for RS-232 serial interface on pins J1-
8 and J1-38.
PIN SIGNAL
1 Vin
2 GND
3 232 RxD2
4 232 RxD1
5 232 TxD1
6 429 IN 2A
7 TxD6+
8 TxD6-**
9 SGND4
10 429 OUT 1A
11 429 OUT 1B
12 ANON MODE
13 Reserved
14 Vpm
15 TRAF TEST
16 Vin
17 RTRN
18 Vcp
19 SGND2
20 TRxD3+
21 TRxD3-
22 GND
23 232 RxD3
24 232 TxD3
25 232 RxD4
26 232 RxD5
27 AIR/GND
28 TX SUPPRESS
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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 Serial Port 2 RS-232 Data In
RS-232 I Serial Port 1 RS-232 Data In
RS-232 O Serial Port 1 RS-232 Data Out
ARINC 429 I ARINC 429 Input Port 2A
RS-422 O Serial Port 6 Data Out+
RS-422/RS-232 O Serial Port 6 Data Out-
Serial Ground Gnd Serial Port Ground
ARINC 429 O ARINC 429 Output Port 1A
ARINC 429 O ARINC 429 Output Port 1B
Open/Ground I Anonymous Mode, Active Low
N/A - N/A
3.0 -3.6 VDC O Personality Module Power Output
Open/Ground I Traffic Test
10-40 VDC Pwr Aircraft Power Input
Ground Gnd Aircraft Power Return
5.5-10 VDC O TC978 Controller Power Output
Serial Ground Gnd Serial Port Ground
RS-485 I/O Serial Port 3 RS-485 Data+
RS-485 I/O Serial Port 3 RS-485 Data-
Gnd Gnd Ground Reference
RS-232 I Serial Port 3 RS-232 Data In (Not used with TC978)
RS-232 O Serial Port 3 RS-232 Data Out (Not used with TC978)
RS-232 I Serial Port 4 RS-232 Data In
RS-232 I Serial Port 5 RS-232 Data In
Open/Ground I Air/Ground In (Squat Switch – configurable)
Vin -1.5V O L-Band Suppression Bus
ADS-B FDL-978 Series and
Lite Series Installation Manual
Document No. 87343 Rev G
2-5