otometrics MADSEN Midimate 622, Руководство пользователя

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Extended Range
This function is primarily for safety purposes. It ensures that the maximum
SPL presented to the patient will not exceed approximately 110 dB SPL,
unless separately enabled by the operator. # 9
This button enables presentation of high level intensities. When enabled, the
Ext. Range LED on the display panel will light up.
Change of frequency or function automatically disables the extended range.
Preprogrammed tests cannot contain intensity settings beyond the limits
defined by the Ext. Range function.
Without the Ext. Range function enabled, the maximum intensities in dB HL
for the various transducers are listed below:
Hz Phone / Bone F.F.
Insert Phone
125 70 - 80
250 90 45 80
500 100 60 80
750 100 60 80
1000 100 70 80
1500 100 70 80
2000 100 70 80
3000 100 70 80
4000 100 60 80
6000 100 55 80
8000 80 - 80
When the audiometer is busy printing out to an external printer or to ZODIAC
901, the Ext. Range LED on the display panel will flash constantly (not
applicable in version 3.2 and higher). Ext. Range LED
Flashes During
Printout
5.1.2 PATIENT COMMUNICATION & MONITORING CONTROLS
Talk Over
Pressing this button accesses the Talk-Over Mode interrupting the present-
ation of stimulus and permitting communication with the patient. # 16
This pushbutton also displays the Talk-Over Level in dB for the purposes of
adjustment.
The display will show the level presented to the patient directly in dB HL and
this level may be changed by turning any of the rotary knobs.
Adjust the Talk-Over Level so that it is comfortably audible for the patient.
The selected level will be stored, even after the audiometer has been
powered off.
MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode
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