Friday, August 19, 2011

Avionics Bending: RDDMI Pointer - Pinout


The second posting for the RDDMI deals with the pointers and the rotating compass card. Each of these elements is controlled by a synchro.


The compass card has one signal source and both the single as well as the double barbed arrow can be switched between ADF 1/VOR1 and ADF2/VOR2 respectively. Below is the pointer schematic for the RDDMI:


Below is the pinout for the RDDMI:

J1 01 Heading Input (X)
J1 02 Heading Input (Y)
J1 03 Heading Input (Z)
J1 08 Heading Synchro (X)
J1 09 Heading Synchro (Y)
J1 10 Heading Synchro Excitation
J1 11 VOR 2 Synchro (X)
J1 12 ADF 2 Excitation
J1 13 ADF 2 Synchro (X)
J1 15 ADF 1 Synchro (X)
J1 16 VOR 1 Excitation
J1 17 VOR 1 Synchro (X)
J1 18 115V 400Hz Power Input (Hi)
J1 23 Heading Synchro (Z)
J1 24 Heading Synchro Excitation Ground
J1 25 VOR 2 Synchro (Y)
J1 26 VOR 2 and ADF 2 Excitation Ground
J1 27 VOR 2 Excitation
J1 28 VOR 2 and ADF 2 Synchro (Z)
J1 29 ADF 2 Synchro (Y)
J1 30 ADF 1 Synchro (Y)
J1 31 ADF 1 and VOR 1 Synchro (Z)
J1 32 ADF 1 Excitation
J1 33 VOR 1 and ADF 1 Excitation Ground
J1 34 VOR 1 Syncrho (Y)
J1 38 VOR 2 - Flag
J1 40 ADF 2 - Flag
J1 54 ADF 1 - Flag
J1 55 VOR 1 - Flag
J2 b DME1 Warning Flag - 28VDC
J3 b DME2 Warning Flag - 28VDC
J3 B DME2 - DATA
J2 B DME1 - DATA
J3 S DME2 - WORD SYNC
J2 S DME1 - WORD SYNC
J2 T DME1 - CLOCK
J3 T DME2 - CLOCK

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