Operation Manual MA 41
8100456 Rev.9
18
01/16
dials) to present or interrupt the tone. The status LED for the stimulus mode
button (8) will illuminate when the tone is presented.
Follow your preferred procedure for the hearing threshold evaluation.
Note: A warning prompt appears on the display in the event that the hearing
level exceeds 100 dB
HL
. The warning prompt disappears after approximately 3
seconds. As long as the prompt is visible on the display, no further entries can
be made.
Test the frequencies: Starting at 1,000 Hz, test the higher frequencies first, then
the lower frequencies.
Use the frequency up key (4) to select the next higher frequency and use the
frequency down key (5) to select the next lower frequency.
Once a threshold value is established at the desired frequency, press the store
button (3) to store the threshold. The appropriate symbol will be plotted in the
audiogram on the display.
Once all frequencies are tested, select the other ear and repeat the hearing
threshold test.
Pulse Tone
If required, the test can also be performed with a pulsed tone. Set the test signal
button (12) on PULSE and the pure tone will be switched to a pulsating tone.
Warble Tone
If required, the test can also be performed with a warble (frequency modulated)
tone. Press the test signal button (12) and the pure tone will frequency
modulate. The warble tone can also be pulsed as described above.
Summary of Contents for MA 41
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