Garmin eTrex Owner's Manual

Also see for eTrex - Hiking GPS Receiver: Features Owner's manual Manual Quick start guide Owner's manual

38If ‘Garmin DGPS’ or ‘RTCM/NMEA’ format is selected,additional fields are provided to control a Garmindifferential beacon receiver (e.g. GBR 21) directly fromyour eTrex. You can enter the beacon frequency and bitrate when you select ‘User’ from the Beacon pop-up listto manually tune the receiver (you can also ‘scan’ if youdon’t know what the nearby station is, but the unit couldcontinue scanning if reception is temporarily lost).To select an I/O Format:1. Press the PAGE Button and switch to the ‘MENU’Page. Use the UP and DOWN Button and highlightthe ‘SETUP’ field. Press ENTER. The ‘SETUP’ Pageappears.2. Press the UP or DOWN Button and select the‘INTERFACE’ field. Press ENTER. The ‘INTERFACE’Page appears.3. Press ENTER on the ‘I/O FORMAT’ field. Press theUP or DOWN Button to select the desired format.Press ENTER. Press PAGE to return to the page ofyour choice.System PageThe System Page shows you the eTrex’s currentsoftware version and allows you to choose from threemodes of operation:• Normal• Battery Save• Demo (Demonstration)Normal ModeThe GPS receiver is turned on all the time when it’s in‘NORMAL’ mode. The normal mode is more sensitive tosudden turns or change of speed/acceleration.The ‘SYSTEM’ Pageshows you the softwareversion, allowing you toupdate from Garmin’sweb site.A ‘BATTERY LOW’message appears at thebottom of every pagewhen there areapproximately tenminutes of battery lifeleft (when using alkalinebatteries).ReferenceSystem Page