9.3 TALK BACK
PATIENT TO OPERATOR
The Talk-Back function enables the operator to receive verbal response
from the patient via a monitor phone or a loudspeaker. The patient
communicates via a Talk-Back microphone (8-72-240) installed in the sound
cabin.
NOTE
: Please ensure that the patient's mouth is 20 to 25 cm from the
microphone to ensure satisfactory sound quality.
If you have the optional Stetomike_ monitoring headset (8-75-340), you will
be able to hear the patient respond via this headset. Otherwise it is
necessary to have a loudspeaker connected to the “Monitor” jack via an
Adaptor Box (8-71-140).
Press the Talk-Back pushbutton to enable sensitivity adjustment of the Talk-
Back microphone amplifier.
To Adjust Talk-Back
Level
A bar-graph on the display shows the actual setting as a percentage of range.
Level may be adjusted by turning any of the rotary control knobs-level is set
electronically thus preventing accidental alteration.
Adjust the Talk-Back Level so that the monitor phone level is comfortable.
The selected level will be stored, even after the audiometer has been
powered off.
NOTE
: The standard MIDIMATE 622 is supplied set for use with an electret
Talk-Back microphone. If you wish to connect a dynamic microphone, call
your local service representative for adjustment!
MIDIMATE 622 OPERATION MANUAL
9. Patient Communication & Monitoring
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