MA 41
– Quick Guide
8106337 Rev. 4
1
28/06/2017
Functionality of the Operating Element
(1) Level control: adjusts the hearing level for the left/right ear.
(2) STIM bar: presents or interrupts the signal for the left/right ear.
(3) STORE button: stores results for the left/right ear.
(4) Frequency up: change to higher frequency for tone audiometry, enters a correct answer for word recognition score
(WRS) testing, or selects the next word in the word list for speech recognition threshold (SRT) testing with Wave files.
(5) Frequency down: changes to lower frequency for tone audiometry, enters an incorrect answer for WRS
testing, or selects a previous word in the word list for SRT testing with Wave files. Press both Frequency
Down buttons to delete a point.
(6) Function button: Monitor with options to adjust monitor and talk back settings; for speech, the input
calibration for microphone or CD player can be adjusted.
(7) Function button: Function is displayed on the screen:
Tone:
Select New, to delete all stored results and start a new session.
Speech
: Reset the result percentage counter or Play Wave file.
(8) Channel STIM Mode button/TALK: to change from presenter to interrupter mode, or to talk to the patient
by pressing and holding the button down
(9) Function button: to select left, right or both ears
(10) Transducer selector button: to choose between Phones, Insert, Bone and Speaker (only calibrated
transducers are available)
(11) Function button: Function is displayed on the screen:
Tone
: No response (NR), stores value with arrow below the symbol.
Speech:
Select microphone, external CD player or Wave file as signal source.
(12) Test Signal selector button: Steady, Pulse, Warble, or P&W (pulse and warble tone)
(13) Function button: Function is displayed on the screen:
Tone
: Select test for selected receiver, either the pure tone threshold, Hearing Level (HL), Most
Comfortable Loudness (MCL) or Uncomfortable Loudness (UCL); if Speaker is selected as the transducer
an option for aided sound field threshold (Aided) is also made available.
Speech
: Select Speech Recognition Threshold (SRT), Word Recognition Score (WRS), MCL, UCL or
Master Hearing Aid (MHA)
(14) Select Unlock: Lock (locks the presentation of the signal in both channels), Track (activates the masking
noise to automatically increase and decrease level in relationship to the signal), L&T (Lock and Track)
(15) Function button: Function is displayed on the screen: Masking on/off, activates masking in the opposite ear.
(16) Function button: To switch from tone to speech and back; the current function is displayed on the screen.
(17) Function button Menu: To enter the user menu, where settings can be adjusted, results can be printed
out or stored as PDF on SD memory card or USB flash drive or the patient list can be entered.
(18) SD memory card slot
(19) Level meter
