Signal Processor Unit; Figure 5 - The Commander P2 Spu With Wiring & Diagnostic Covers Removed - ComNav Commander P2 Installation & Operation Manual

ComNav Commander P2 Installation & Operation

Signal Processor Unit

PN 20110006
The Signal Processor Unit (SPU), as its name suggests, accepts a number of signals from
the other components of the autopilot system, and processes them as necessary to control
the movement of the vessel's rudder so as to maintain a given heading. As well as steering
the vessel, the sophisticated software within the SPU continually checks all aspects of the
autopilot's performance, and will advise the user via the Control Head if any problems are
encountered.
Figure 5 – The Commander P2 SPU with Wiring & Diagnostic Covers Removed
Document PN 29010074 V3.1
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System Overview