otometrics Madsen ZODIAC 901, Руководство пользователя

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The second line of the display shows the type and level of stimulus used
in the test recorded in the curve.
L/R Shift When starting to test the patient’s other ear, remember to register the
change-over on the ZODIAC 901, otherwise the data for the first ear will
be overwritten. To change to the other ear, press
Alt. Select and then
Softkey 4 .
Setup Parameters Setup parameters available in Manual Reflex Mode (see also §5.2.2) are:
Stimulus Step: 1, 2, 5 or 10 dB
Y -axis scaling: Auto, 75, 150, 225, 300, 375
m
l
Speed: slow or fast
Y -Axis: Auto, negative, positive, positive/negative
Multi Curves
4.2.2 SCREENING
Leak
Leak Detect On/Off
If there is a leak during the measurement, the Leak lights on the front
panel and the probe LED will light yellow. Before proceeding, ensure
that you are using the right size eartip, and try pulling down the ear
lobe while at the same time rotating the eartip in the ear canal. The in-
strument will continue the procedure automatically unless a leak of
more than 18 daPa is encountered. The Status LED will light red and
you will hear a beep. If Leak Detect has been disabled (Version 4.x only),
the
Leak lights on the front panel but the analyzer will continue until the
end of the measurement, assuming that a volume is present (see Setup,
§5.2.1).
Version 3.x and Later It is worth noting that in Version 3.x and later, a leak encountered after the
measurement begins provokes a beep and the Leak lights go yellow.
Softkey 2
Ensure that you are in Advanced Mode: press
Main Menu
and use
Soft-
key 5 to select Advanced Mode (unless this requirement has been
changed using the ZODICON
TM
software). Press Reflex to display the
Reflex Menu. Press Softkey 2 from the Reflex Menu to select Reflex
Screening.
Select stimulus frequency and intensity, Ipsi or Contra, as desired.
Press Softkey 2 (or the Start key on the Probe) to start the test. Two re-
flex measurements will be made one after the other (baseline 0.5 sec,
stimulus 2 sec, and baseline 0.5 sec, unless these have been modified us-
ing the ZODICON
TM
software). The Stimulus lamp on the front panel
will light while the stimulus is being applied. The Status lamp will light
throughout the measurement period.
Tone Switch
Alternatively, press the Tone Switch to start the test and only one reflex
measurement will be made. If required, change frequency or intensity
and press the
Tone Switch again; another reflex measurement will be
made.
42 Operation Manual
MANUAL MODE Chap. 4 GN Otometrics
REFLEX TESTING
4.2 ZODIAC 901 Middle-Ear Analyzer