Garmin SOUNDER 125 Owner's Manual & Reference

Contents

Units of MeasureThe GPS 125 Sounder lets you select nautical(default), statute, or metric units of measure for allspeed and distance fields.To change the unit of measure:1. Highlight the ‘UNITS’ field and press the F key.2. Use U and D to select the desired unit ofmeasure.3. Press the F key to confirm the selection.Speed FilterThe speed filter allows you to determine how theGPS 125 Sounder responds to changes in track orground speed. Three settings are available: Auto, On, orOff. The ‘Auto’ setting is the default and will monitorthe changes in your current track and speed and adjustthe receiver’s response time automatically. The ‘On’ set-ting allows you to manually enter a response time up to300 seconds. Selecting a higher setting may be desirablein slow-speed applications with frequent changes intrack.To enter a value for the speed filter:1. Highlight the ‘SPEED FILTER’ field and press F.2. Select the ‘ON’ option and press F.3. Highlight the “speed value” field and press F.4. Select the desired number of seconds and press F.Navigation &Speed FilterREFERENCE54Choose a navigation unityou are familiar with orthat may be appropriate tothe situation in which theGPS 125 Sounder is used.The number entered repre-sents a window of time theGPS 125 Sounder considersin adjusting to changes inspeed and track. For exam-ple, if 12 seconds is entered,the speed displayed willconstantly represent thespeed averaged over the last12 seconds.