41.3 Setting the BacklightPressing the M1 key while holding down SF (Shift) key activates or deactivates thebacklight function.Press M1 whileholding down SF .Backlight ONIf no key ispressed for atleast 3 seconds.Backlight OFF(The backlight functionis kept ON.) Press M1 whileholding down SF .Press any key (exceptfor the simultaneousdepression of M1and SF ).Backlight OFF(The backlight functionis OFF when you poweron the BHT.)Press M1 whileholding down SF .In user programs, you can select the key to be used for activating or deactivatingthe backlight function (instead of the initial setting: combination of SF andM1 ), as well as modifying the ON-duration of the backlight before the automaticturning-off.NOTESFM1(26-key pad)