Operation Manual MA 428100460 Rev.7 Ver.1 16 12/15The Display of the MA 42The instrument is set up to air conduction and pure tone by default. Whenstarting the MA 42 the tone audiometry screen opens.The frequency is set to 1 kHz and the level of the tone to 30 dBHL for the rightchannel, and 0 dBHL noise for the left. All settings are shown on the display,as well as the function of the control panel buttons on the left and right sideof the display. The level limits of the chosen transducer are marked by shadingin the lower area of the audiogram.The display has an energy saver function. The backlight of the display isautomatically dimmed after approximately three minutes. Any action with theMA 42, such as pressing a button or rotating the dial, switches the backlightimmediately on again.Figure 4 - Start Screen Tone Audiometry
