TM-9-1200-215-34&P Technical Manual for M109 Automatic Fire Control System (AFCS) Download
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TM 9–1200–215–34&P 1–7 c. The Figure 1–1 shows the interrelationships of the AFCS components and processing flows of the major interfacing signals: Figure 1–1. AFCS Block Diagram VMS MODEM VMS MODEM VMS DRU NAVIGATION DEVICE DISPLAY UNIT EL SERVO EL TACH AZ SERVO AT TACH TUBE TEMP MODE SEL RTU POWER CONDITIONING UNIT VEHICLE POWER BACKUP BATTERIES ACU SENSORS 1553 BUS COMSEC KY–57 AN–VRC–89 AN–VRC–64 INTERCOM – NOT PART OF AFCS – AFCS COMPONENTS SLIP RINGS PROGNOSTICS/ DIAGNOSTICS