Units Menu. Maretron DSM250-01

DSM250 User’s Manual

• Compass Rose (see Section 7.2 on page 199)

• Gauge (see Section 7.3 on page 200)

• GPS Status (see Section 7.4 on page 201)

• Numeric (see Section 7.5 on page 202)

• Rolling Road (see Section 7.6 on page 203)

• Line Graph (see 7.7 on page 204).

• Weather Screen (see Section 7.8 on page 204)

• Wind Rose (see Section 7.9 on page 206)

• Moon Phase (see Section 7.10 on page 206)

• Trim Tab (see Section 7.11 on page 206)

• Swing Meter (see Section 7.12 on page 207)

• Tank Gauge (see Section 7.13 on page 207)

5.2.6.4.2 Instance

Instance is used to specify which product on the network will be used as the source of the displayed information. For example, there may be two GPS’s on the network each of which will have a unique instance assuming the network has been properly configured. You use the instance field to tell the

DSM250 which GPS to use for displaying data. Most of the time, the DSM250 simply displays a single parameter from a device on the network so you will only see one “Instance” entry. There are other parameters that the DSM250 displays that are a combination of information from multiple products on the network. For example, fuel economy is a combination of fuel rate and Speed Over

Ground (SOG) so you will see two “Instance” entries, one to specify the engine(s) and one to specify the GPS for SOG.

5.2.6.4.3 Alert

In setting up the Anchor Watch display type, this field is used to specify the associated Anchor Watch

Alert priority. The list from which the selection is made will be limited to the list of Anchor Watch Alerts already created in the system.

5.2.6.4.4 Title

Each display type has a user defined title that is displayed above the control. The contents of the title are specified in this field. There are three options:

• Default – the title of the control is the same as the name of the parameter being displayed.

• Label – the label of the parameter. The label is programmed into the remote device, and will be transferred to the title when it is received from the remote device. This means that if the label of the remote device is changed, the title of the control will be automatically updated to match the new label.

• Custom – the title is entered by the user using the method described in section 3.3.4.

5.2.7 Units Menu

The Units Menu allows you to set the desired display units for the DSM250. The following sections provide more detail on the individual unit settings.

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Figure 31 – DSM250 Units Menu

5.2.7.1 Heading

This menu item allows you to select whether heading, course, and bearing information is displayed in true or magnetic measurements. True heading can only be displayed if a variation is available on the

NMEA 2000 ® bus.

If the DSM250 is not showing heading or COG (i.e., no needle on compass rose or dashes for digital displays), it’s probably a good indication that variation isn’t available on the network. The DSM250 can’t calculate true heading given magnetic heading from a compass if variation isn’t available.

Likewise, the DSM250 can’t calculate magnetic course given true course from a GPS if variation isn’t available. You can setup a favorite screen to display variation, which will help you determine whether or not you have a product on the network broadcasting variation information (Maretron’s GPS’s use the World Magnetic Model to broadcast variation).

5.2.7.2 Depth

This menu item allows you to select the units to be used for the display of all depth-related information. Units that may be selected are the following:

• Meters

• Fathoms

• Feet

5.2.7.3 Distance

This menu item allows you to select the units to be used for the display of all distance-related information. Units that may be selected are the following:

• Nautical

• km

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DSM250 User’s Manual

5.2.7.4 Boat Speed

This menu item allows you to select the units to be used for the display of all boat speed-related information. Units that may be selected are the following:

• Knots

• Miles/Hour

• Km/Hour

• Meters/second

5.2.7.5 Wind Speed

This menu item allows you to select the units to be used for the display of all wind speed-related information. Units that may be selected are the following:

• Knots

• Miles/Hour

• Km/Hour

• Beaufort

• Meters/second

5.2.7.6 Wind True Vessel Ref.

This menu items allows you to select whether the true wind direction and speed referenced to the vessel are relative to the water or the ground. Sailors are generally interested in measurements relative to the water while power boaters are interested in measurements relative to the ground.

Station is for home applications (i.e., fixed mounting location unlike a vessel that changes direction).

Formats that may be selected are the following:

• Water

• Ground

• Station

5.2.7.7 Temperature

This menu item allows you to select the units to be used for the display of all temperature-related information. Units that may be selected are the following:

• °F

• °C

5.2.7.8 Atmospheric Pressure

This menu item allows you to select the units to be used for the display of atmospheric (barometric) pressure. Units that may be selected are the following:

• Inches Mercury (in Hg)

• Bar

• Millibars

• Millimeters Mercury (mm Hg)

• kPa

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5.2.7.9 Fluid Pressure

This menu item allows you to select the units to be used for the display of fluid pressure. Units that may be selected are the following:

• Pounds/Square Inch (PSI)

• kPa

• Bar

5.2.7.10 Volume

This menu item allows you to select the units to be used for the display of all liquid volume-related information. Units that may be selected are the following:

• Liters

• Imperial Gallons (UK Gallons)

• Gallons (US Gallons)

5.2.7.11 Time Format

This menu item allows you to select whether measurements indicating a time of day are displayed in

12-Hour (AM/PM) format or 24-Hour (military) format.

5.2.7.12 Local Time Offset

This menu item allows you to indicate the offset of local time relative to Universal Time, Coordinated

(UTC, also known as Greenwich Mean Time, or GMT), in hours and minutes. For instance, Eastern

Standard Time (EST) would use an offset value of -5:00.

5.2.7.13 Date Format

This menu item allows you to select the format of any displayed dates.

Formats that may be selected are the following:

• MM-DD-YYYY (01-31-2005)

• DD-MM-YYYY (31-01-2005)

(JAN-31-2005)

(31-JAN-2005)

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