Garmin GPS 12XL Owner's Manual (Software Version 2.00-3.62) - Page 46

REFERENCE Screen Contrast & Backlighting Screen Contrast The "Stay On" setting will keep your backlighting on continuously. However, this will significantly reduce your battery life. The tone setting has three options to customize it to your preference. 42 The GPS 12XL has adjustable screen contrast controlled by an on-screen bar scale. To set the screen contrast: 1. Highlight the 'CONTRAST' field, and press E. 2. Adjust the bar scale to the desired contrast, and press E. Note: The screen contrast can also be adjusted by pressing the rocker keypad while on the Satellite Page (see pg. 11). Backlighting Timer The screen backlight timer is adjustable for 15, 30, 60, 120, or 240 seconds. The timer also may be set to the 'Stay On' setting for continuous use. Whenever backlighting is on, a bulb icon will appear on the Satellite Page. To set the backlight timer: 1. Highlight the 'light timeout' field, and press E. 2. Select the desired setting, and press E. 3. To turn lighting on and off, press the B briefly. Tone Setting The GPS 12XL allows you to choose a tone for messages only, messages and keystrokes, or no tone setting at all. To set the tone: 1. Highlight the 'TONE' field and press the E key. 2. Select the desired setting and press E.