Operation Manual MA 428100460 Rev.7 Ver.1 13 12/15device customization, an extensive User Menu is available for advance users(see Chapter 7).Functionality of Operating ElementsThe following table describes the main functions of each button for the toneand speech audiometry screen:Figure 3 - Control Panel MA 42(1) Level control: adjusts the signal level for the left/right ear.(2) Stim button: presents or interrupts the signal for the left/right ear.(3) Store button: stores results for the left/right ear or no response if buttonis pressed for 3 seconds.(4) Frequency Up: change to higher frequency for tone audiometry, enters acorrect answer for word recognition score (WRS) testing, or selects thenext word in the word list for speech recognition threshold (SRT) testingwhen the internal Wave files are used.(5) Frequency Down: change to lower frequency for tone audiometry,enters an incorrect answer for WRS testing, or selects a previous word inthe word list for SRT testing when the internal Wave files are used.(6) Monitor: allows adjustment of monitor levels and talk back level. In thespeech screen, the input calibration for microphone or CD player can beadjusted.