Garmin GDL 90 Installation Manual

Also see for GDL 90: Installation manual

Installation ProceduresGDL 90 Installation Manual 560-1049-00 Rev B 2-132.7.1.2 I/O Connector (P2)The interface to external equipment is made through a standard male 37-pin D-sub connector near on therear of the unit. The pin-out for the connector is defined in the following table.Table 2-5. I/O Connector Pin-Out (P2)Pin # I/O Name Description1 O Audio Out Hi Low-Level Audio Out (to audio panel)2 -- RESERVED RESERVED3 -- RESERVED RESERVED4 I TCAS RA Active In TCAS Resolution Advisory Active Discrete In (active low)5 I Audio Inhibit Input Inhibit Audio Alerts (active low)6 -- RESERVED RESERVED7 -- Serial Ground 7 RS232 signal ground8 I Time Mark In + GPS 1 Pulse Per Second Input + (RS422 Level)9 O Time Mark Out + GPS 1 Pulse Per Second Output + (RS422 Level)10 I RS422 RxD3 + RS422 channel 3 serial data input +11 O RS422 TxD3 + RS422 channel 3 serial data output +12 I 429 IN 4A ARINC 429 In Channel 4A13 I 429 IN 3A ARINC 429 Input Channel 3A14 I 429 IN 2A ARINC 429 Input Channel 2A15 I 429 IN 1A / RS232 RxD7 ARINC 429 In Channel 1A / RS232 Channel 7 serial data in16 O 429 OUT 4A ARINC 429 Output Channel 4A17 O 429 OUT 3A ARINC 429 Output Channel 3A18 O 429 OUT 2A ARINC 429 Output Channel 2A19 O 429 OUT 1A ARINC 429 Output Channel 1A20 O Audio Out Lo Audio signal ground21 O Suppression Output Suppression Output (active high)22 I TCAS Operational In TCAS Operational Discrete Input (active low)23 I Air/Ground In Air / Ground Discrete Input (level-configurable)24 -- Serial Ground 6 RS232 signal ground25 O UAT Fail Out UAT Fail Output (active low)26 -- RESERVED RESERVED27 -- RESERVED RESERVED28 I RS422 RxD3 - RS422 channel 3 serial data input -29 O RS422 TxD3 - RS422 channel 3 serial data output -30 I 429 IN 4B ARINC 429 Input Channel 4B31 I 429 IN 3B ARINC 429 Input Channel 3B32 I 429 IN 2B ARINC 429 Input Channel 2B33 I 429 IN 1B / RS232 RxD6 ARINC 429 In Channel 1B / RS232 Channel 6 serial data in34 O 429 OUT 4B ARINC 429 Output Channel 4B35 O 429 OUT 3B ARINC 429 Output Channel 3B36 O 429 OUT 2B ARINC 429 Output Channel 2B37 O 429 OUT 1B ARINC 429 Output Channel 1B1201937VIEW LOOKING AT REAR OF UNITFigure 2-10. 37-pin Connector