The intermediate Swing Meter (Rate of Turn) system includes Maretron’s solid state compass (SSC200), which provides Rate of Turn information. This system also includes a GPS antenna/receiver (GPS200) which provides magnetic variation based on the vessel’s position. The magnetic variation is combined with the magnetic heading within the display to provide the user with true heading.

In addition to rate of turn, magnetic heading, and vessel attitude (i.e., pitch and roll) is provided by the compass and available for viewing on the display.

The following table shows the major components included within this example system plus a list of the information or data available for display.

Product	Description	Available Data List
DSM250	Helm pod display	Displays data in this list, monitors the data and if there is a problem will sound an internal buzzer.
GPS200	Cabin top GPS	Position, speed over ground, course over ground, time, date, magnetic variation and more
SSC300	Compass	Monitors magnetic heading, rate of turn and pitch and roll

• N2KBuilder file
This file requires Maretron's free NMEA 2000^® network design tool N2KBuilder^® to be installed on your PC.
• Bill of Materials (pdf)
• Network Diagram (png)

The following screenshots (click to enlarge) are examples of how monitored data can be displayed on the DSM250.