Operating Instructions MA 42
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4. Working with the MA 42
The hearing level can be easily adjusted independently for each channel with a
dial on each side of the instrument (1). For optimal convenience these level
control dials are usable from the top or the side of the instrument. The level
can be changed in 5 dB steps (adjustable to 2 dB or 1 dB).
The Stimulus presenter buttons (2) and Store buttons (3) are located beside
the left and right level control dials (1). With the STIM MODE button (8) you
can change from presenter to interrupter mode. The corresponding LED lights
up when a signal is presented. The frequency is changed with plus (4) and
minus (5) buttons for both channels together. The ergonomic design of the
MA 42 makes it easy to control level, signal presentation and frequency with
one hand.
4.1 Using the control panel of the MA 42
The main functions of the MA 42 are directly accessible by using the functional
buttons which are located around the display. As the buttons have changing
functionality, the actual function of each button is shown in blue boxes
adjacent to the button. To change the actual function displayed on the screen,
just press the addressed button and a list of alternative functions appears. Press
the button several times again to choose the desired function.
An extensive User Menu for the customization of the MA 42 is available for
advanced users (see chapter 7).
Figure 2 Control buttons
Summary of Contents for MA 42
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