Audio/Display OptionsThe ‘Audio/Display’ options allow the user to adjustthe display contrast of the display screen, set thebacklight timer and turn the alarm/keypress tonegenerator on or off.To set the screen contrast:1. Highlight the ‘Contrast’ field and press E.2. Use the right and left arrow keys to adjust the bar scalefor the desired contrast and press E.The backlight timer provides six different adjustablesettings to choose from: 0, 15, 30, 60, 120 and 240 sec-onds. The ‘0’ setting will prevent the screen backlightfrom “timing out”—so when you turn it on, it stays on.To set the backlight timer:1. Highlight the ‘Backlight Time’ field and press E.2. Toggle through and select the desired setting. Confirmthe setting by pressing E.3. To turn backlighting on and off through three levels oflighting, press the B key.The ‘Tones’ setting allows you to select from threeoptions: MSG only, MSG and Keystroke, and None. Thisdetermines if an audible tone sounds for message alertsand/or keystroke confirmation, or not at all.To select a tone mode:1. Highlight the ‘Tones’ field and press E.2. Select the desired tone mode and press E.Date/Time and Timer OptionsThe ‘Date/Time’ submenu provides access to time for-mat, local time offset and timer functions. The currentdate and time is displayed at the top page. The time canbe displayed in a 12- or 24-hour format.To set the hour format:1. Highlight the ‘HOUR FORMAT’ field and press E.2. Use the arrow keypad to toggle through and select thedesired setting. Confirm the setting by pressing E.Date/Time setup pageContrast, backlight timer,and tone may be controlledfrom the audio/displaypage.Setup Menu:Audio/Display& Date/TimeReference53