otometrics MADSEN Midimate 622, Руководство пользователя

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However, note that the Talk Over button islocated in the OPERATION panel
because, in addition to its function as a Level control, pressing this button
interrupts any stimulus signal being presented to the patient in order to
permit talk over. Talk Over
The section marked “Select” contains 5 “softkeys” and the Menu button.
Softkeys are buttons which perform different functions in different contexts.
Key 3 also functions as the Option key accessing whichever Options menu is
available for any given test (e.g. Hearing Level Lock, Patient Signal). The Select Panel
The OPERATION panel comprises three rotary control knobs for controlling
Frequency, Hearing Level and Masking Level, the red Interrupter bar and
four pushbuttons for Reverse, Talk Over, Extended Range and L/R Shift. The Operation
Panel
3.3 FRONT PANEL CONTROLS
Pull out drawing at the back of this manual for itemized diagram of the
MIDIMATE 622 front panel (Fig. 4) and read the following description of the
individual controls and indicators. See Front Panel
Diagram at Back of
This Manual (Fig. 4)
1. Red light indicating patient response. Pt. Response LED
2. Green light indicating the administration of a stimulus to the patient
(Pure Tone Audiometry). Also functions as a VU meter in Speech
Audiometry. Stimulus LED
3. 2 x 40 character Liquid Crystal Display (LCD) that not only indicates
test parameters and readings but also permits communication
between the operator and the audiometer. Display
4. Red light indicating that Extended Range HL has been enabled; this
LED also flashes when the audiometer is busy printing out (versions
3.0 and later). Ext. Range HL LED
5. Green light indicating instrument has been switched on. Power LED
6. Rotary control knob for setting masking level during testing. May also
be used as a potentiometer control when adjusting levels of input
sources and patient communication functions. Masking Level
7. Pressing this pushbutton displays the Monitor Level visually as well as
a percentage of Range. Level can then be adjusted by turning any of
the rotary control knobs-level is set electronically preventing accidental
alteration. Monitor Level
8. Pressing this pushbutton displays the Talk-Back Level visually as well
as a percentage of Range. Level can be adjusted as for Monitor. Talk Back
9. When Hearing Level is at its maximum output intensity, pressing this
pushbutton will extend the range by up to 25 dB. Ext. Range HL
10. This pushbutton automatically switches all selected parameters from
the left to the right channel and vice versa. L/R Shift
MIDIMATE 622 OPERATION MANUAL 3. General Description
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