35Display PageThe Display Page allows you to set the displaybacklight timeout (on all the time, 15 or 30 seconds, and1 or 2 minutes) and the display contrast.To change the Light Timeout:1. Press the PAGE Button and switch to the ‘MENU’Page. Press the UP or DOWN Button and highlight‘SETUP’. Press ENTER. The ‘SETUP’ Page appears.2. Press the UP or DOWN Button and highlight‘DISPLAY’ and press ENTER. Press ENTER on the‘LIGHT TIMEOUT’ field.3. Press the UP or DOWN Button and highlight yourselection and press ENTER. Press PAGE to get backto the ‘SETUP’ page.To adjust the display contrast:1. Press the PAGE Button and switch to the ‘MENU’Page. Press the UP or DOWN Button and highlight‘SETUP’. Press ENTER. The ‘SETUP’ Page appears.2. Press the UP or DOWN Button and highlight‘DISPLAY’ and press ENTER. Press the UP orDOWN Button and highlight the ‘CONTRAST’ sliderand press ENTER.3. Press the UP or DOWN Button to move the slider-adjust the contrast and then press\ ENTER. PressPAGE to get back to the ‘SETUP’ page.Units PageUsing your eTrex with a paper map increases the naviga-tion power of both. If you are going to use a map in con-junction with the eTrex, you must select the position format(grid), map datum, map units, and north reference and vari-ance to match the map’s units. ‘Angle’ displays directionalinformation in degrees or mils. This is the purpose of theUnits Page. Regarding position format, the eTrex allowsyou to choose from eighteen different grids. The eTrexsupports the UTM/UPS and latitude/longitude grids becausetogether they cover the world.You can set the backlightto stay on all the time,but watch your batterypower!The ‘UNITS’ Pageallows you match theunits of the eTrex to theunits of a unique papermap you may be using.ReferenceDisplay andUnits Pages