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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