MA 42
– Quick Guide
8106358 Rev. 4
1
29/06/2017
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 channel levels and talk back level; at speech also
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/TALK button: to change from presenter to interrupter mode, or to talk to the patient
by holding the button pressed down
(9) Function button: to select left, right or swap
(10) Transducer selector button: to choose between Phones, Insert, Bone and Speaker (only calibrated
receivers are available)
(11) Function button: Function is displayed on the screen.
Tone
: signal selector, to choose between tone, narrow band noise, white noise or to switch the channel off
Speech
: Select microphone, external CD player or Wave file as signal source.
(12) Test Signal Selector button: for Steady, Pulse or Warble tone, 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), Uncomfortable Loudness (UCL) or Over Threshold (OT) test.
Speech
: Select Speech Recognition Threshold (SRT), Word Recognition Score (WRS), MCL, UCL or MHA.
(14) Select Unlock: Lock (locks presentation of the signal in both channels together), 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:
Tone:
signal selector, to choose between tone, narrow band noise, white noise or to switch the channel off.
Speech:
Select microphone, external CD player or Wave file as signal source.
(16) Transducer selector button: to choose between Phones, Insert, Bone and Speaker (only calibrated
receivers are available)
(17) Function button: to select left, right or swap
(18) Function button: to switch from tone to speech and back.
(19) Function button
– Menu: to enter the User Menu. Settings can be adjusted, the results can be
printed out or stored as PDF on SD memory card or USB flash drive or the patient list can be entered.
(20) SD memory card slot
(21) VU-Level meter
