Pure Tone Testing; Air Conduction Thresholds; Preparing For The Test; Testing The Patient - otometrics Madsen Midimate 602 Quick Manual

MIDIMATE 602 & 622 Diagnostic Audiometers

4 Pure Tone Testing

4.1

Air Conduction thresholds

4.1.1

Preparing for the test

Before you test the Air Conduction thresholds of a patient, make the following
preparations:
1. Connect the patient response handswitch, the headphones, the optional monitor
headset (or the optional monitor adaptor with talkover microphone and monitor
loudspeaker), and the optional patient talkback microphone.
2. Switch on the electric power supply.
3. Select User Test 1 or change the setup as described in Chapter 0, and make sure
that the setup begins with Tone, Air.
4. If you use an optional monitor headset or loudspeaker, it will normally give an
audible response each time the patient activates the patient response handswitch.
To disable or re-enable this function, press Softkey 3 in test mode to display the
Options Menu, and then toggle Softkey 5. The display shows PTS-Off when
you can disable the function by pressing Softkey 5, and vice versa. The display
returns automatically to the current test values after a few moments.
5. Check the monitored level of audible response from the patient response hand-
switch if it is enabled, and, if necessary, use a screwdriver to adjust the Pt. Vol.
level on the rear panel until this level is comfortable.
4.1.2

Testing the patient

To test the patient, do as follows:
1. Place the patient, facing away from the MIDIMATE 602/622, preferably in a
sound-cabin.
2. Instruct the patient in how to use the patient response handswitch. When the pa-
tient presses the handswitch, the Response light on the front panel lights, and
there is a signal in the optional monitor headset or monitor loudspeaker.
3. If required, instruct the patient in how to use the optional talkback microphone.
4. To check the monitored level of the patient's talkback press the Talkback key in
the right-hand Level section of the front panel, and change it, if required, by
turning any of the rotary wheels while you hold down the key. The Response in-
dicator shows the percentage used.
5. To check the monitored level of the stimulus press the Monitor key in the right-
hand Level section of the front panel, and, if required, change it by turning any of
the rotary wheels while you hold down the key. The Stimulus indicator shows
the percentage used.
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