Furuno FV-110GX Operator's Manual page 19

FV-110GX system
Modules in the FV-110GX ADU
Figure 1-4: Above Deck Unit modules 1/2
1. GNSS module.
2. VSAT Interface Module (VIM3).
3. Pedestal Control Module (PCM2).
4. Service switch.
5. Single Motor Driver Module for cross elevation (SMD (used "DDM" in log)).
6. Cross elevation motor and encoder.
7. Zero Reference Module (x3) (ZRM) (not visible on photo). (2 in the figure above, 1 in
the figure below)
1-3