30 TRACKER 5100/5100i/5500/5500i Installation and Operation ManualNAVMAN13-7 Units setupDistance unitsOptions are nm (nautical miles), mi (statute miles)or km (kilometres).Speed unitsOptions are kn (knots), mph (miles per hour) or kph(kilometres per hour).Depth unitsOptions are ft (feet), fm (fathoms) or m (metres).Local offsetThe difference between local time and UTC (GMT).Change local offset when daylight saving time startsand ends. The range is 0 to ± 13 hours, in 30 minutesteps.13-9 Time setupAutopilot outDisable or enable the NMEA output to an autopilotor other instrument.Autopilot dataDisplays a list of the NMEA sentences that can besent to an autopilot. Turn each Off or On as required.13-8 Comms setupFuel unitsOptions are litres, US gal (US gallons) or Imp gal(Imperial gallons).CompassThe options are °T (True north) or °M (Magneticnorth).NavBusOff: NavBus is disabled. One of the NavBusconnector pins becomes a NMEA input line(see sections 14 and 15-3).On: NavBus is enabled.NavBus groupEnter the NavBus backlight group number (the rangeis 0 to 4, see section 14).Time formatThe options are 24 hour or 12 hour.Date formatThe options are dd/MMM/yy, MMM/dd/yy,dd/MM/yy or MM/dd/yy.To enable the alarm, enter an anchor alarmdistance (up to 9.99 distance units). TheTRACKER saves the current boat position.To disable the alarm, set the anchor alarm toOff (0).The minimum usable setting of the alarm isdetermined by the accuracy of the global positioningsystem, typically within 10 m (33 ft).Warning: Do not rely on the anchor alarm asthe only anchor watch.XTE alarmWhen the XTE alarm is enabled, an alarm will soundwhen the boat is navigating to a point and the distancefrom the boat to the plotted course (XTE) is morethan CDI (Course Deviation Indicator) scale (seeappendix C, CDI).To enable the alarm, set the XTE alarm to On.To disable the alarm, set the XTE alarm to Off.Danger alarmWhen the danger alarm is enabled, an alarm willsound when the boat comes within this distance of adanger waypoint.To enable the alarm, enter an danger alarmdistance (up to 9.99 distance units).To disable the alarm, set the danger alarm toOff (0).Low fuel alarmWhen the low fuel alarm is enabled, an alarm willsound when the fuel remaining in the tank is lessthan the low fuel value.To enable the alarm, enter a low fuel value.To disable the alarm, set the low fuel value to Off.