Garmin GMI 20 Marine Instrument Quick Start Manual - Page 6

Changing Instrument Screen Options Data provided on an instrument screen is represented either numerically or as an analog gauge. In many cases, a numerical value can be shown as an analog gauge, and vice versa. To change the appearance of an instrument screen: From the instrument screen, select Menu > Show Gauge to view a gauge or Menu > Show Number to show a number. NOTE: If the instrument screen can only be displayed as a numeric value or an analog gauge, this choice will not be available. For custom instrument screens, see page 8.  Some instrument screens have additional options available. To change additional options on an instrument screen: From the instrument screen, select Menu. • To change the source sensor, select Source, and choose sensor you want to use. For example, if you have a GPS antenna and a heading sensor, choose the sensor you prefer. • To change additional options, such as resetting an odometer, adding Trip Speed Graphics to a speed gauge, viewing a water-temperature graph, or adding fuel, select the option you want to change. GMI 10 Quick Start Manual