otometrics Madsen Xeta, Reference Manual

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AT Start Level Use the Right level knob to change the starting hearing level.
Min. 20 dB, max. 60 dB HL.
AT Max Level
Max HL is the highest stimulus level that may be presented (50 to 80 dB HL or Max
dB).
If you select the value Max dB , the maximum level presented will be the safety
limit for that frequency (approx. 100 dB). See Extended Range ► 19 .
AT Criterion This setting defines the number of threshold passages that determines the
threshold.
Use the
Right level
knob to set the threshold detection criterion to:
1 of 1
2 of 3, or
3 of 5
AT Cross check (at
1000 Hz)
Use the
Right level
knob to select/deselect cross check.
• Yes
The 1000 Hz threshold will be retested before testing the lower frequencies.
•
No
The 1000 Hz threshold will not be retested before testing the lower fre-
quencies.
The cross check function is a quick test of the levels next to the 1000 Hz threshold.
If the 1000 Hz cross check fails, a new full threshold test is made for this frequency.
AT Procedure
•
Standard
The stimulus but not the preset stimulus duration is interrupted by the patient
response. This is followed by a random inter-stimulus interval.
• Quick
Both the stimulus and the preset stimulus duration are interrupted by the
patient response. The response is immediately followed by the random inter-
stimulus interval.
This results in a faster test.
AT Discreet mode
•
On
The Signal indicator does not light up and Xeta does not sound a beep when
stimulus is presented and the stimulus levels are not displayed.
• Off
The stimulus level is displayed and the signal indicator lights up when stimulus
is presented.
6.1.2 Auto Screening test settings
• To change settings, press
Setup
.
• To return to the Auto Screening test, see Automatic Screening ► 13 .
56 Otometrics - MADSEN Xeta
6 MADSEN Xeta Test Settings