otometrics madsen itera ii, Reference Manual

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Muting the simulator
If required, you can temporarily mute the output: Press REVERSE to deactivate the output (the button indicator turns off).
Both
OUTPUT indicators
light up automatically.
Simulating amplification
The HIS always starts in unsimulated mode. The display shows
-HIS-
to indicate that the simulation filters are not activated.
This means that the sound is presented without simulated amplification.
• Starting simulation
To start simulating, you must activate the HIS filters by pressing the
START/STOP
button. To show the benefit of a
hearing instrument, use the
START/STOP
button to switch between simulating and not simulating the amplification.
• The display shows a + symbol for the ear where a simulation filter is activated.
A. Master volume
B.
No filter activated
C.
Filter activated
Adjusting HIS "Master Volume"
Note
•
The system automatically sets the Master Volume.
• Increasing the output level manually
You can manually increase the output level by adding to the Reference Level.
– Use the
right
and
leftLEVEL
knobs to change the "Master Volume" as follows:
– The Master Volume for left and right ears are locked together as default. MASK LOCK is lit.
– Use the
left
or
rightLEVEL
knob to control the "Master Volume" for both ears together.
– If you wish to control the "Master Volume" for the two ears individually, press MASK LOCK to deactivate the
locked function.
Example:
Sound level = Ref. level + 10 = 65 + 10 = 75 dB SPL in both ears.
None of the filters is active.
8.6.2 Viewing thresholds and filters
1. You can use the
FREQUENCY
knob to view stored thresholds and resulting filters graphically.
Otometrics - MADSEN Itera II 81
8 Special tests