Operating Instructions MA 42
Operating_Instructions_8100460-6_MA42_e_15a 10 8100460-6 1/15
(10) Receiver select button, to choose between Phones,
Insert, Bone and Speaker (only calibrated receivers are available)
(11) Functional selector 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) Functional selector button, function is displayed on the screen:
Tone: Selects test for selected receiver, either the pure tone threshold,
Hearing Level (HL), Most Comfortable Loudness (MCL), Uncomfortable
Loudness (UCL) or Over Threshold 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) Functional selector button, function is displayed on the screen: Signal
selector, to choose between tone, narrow band noise, white noise or to
switch the channel off
(16) Receiver select button, to choose between Phones,
Insert, Bone and Speaker (only calibrated receiver are available)
(17) Functional selector button, to select left, right or swap
(18) Functional selector button, to switch from tone to speech and back. The
current function is displayed on the screen
(19) Functional selector 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) Level meter
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