otometrics Madsen ZODIAC 901, Руководство пользователя

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Leak Detect On/Off
the Leak lamp lights yellow: the measurement is then automatically re-
peated. If a small leak is detected, the Leak lamp lights yellow and the
measurement continues. However, if a leak greater than 20 daPa is de-
tected, the measurement will be repeated. (In Version 4.x, this repeated
sweep can be disabled if Leak Detect under Setup is Off).
Reflex If Advanced Mode has been selected, pressing Reflex displays the
screen shown in Fig.4.14.
User 1 / User 2 The following operation modes may be selected from the Reflex Menu:
Manual, Screening, Decay, User 1 and User 2. Screening is used to test a
succession of patients rapidly, to identify those whose reflex reveal
middle-ear disorders. The Reflex Decay test is used to examine patients
whose Stapedius muscle is unable to maintain a response to sustained
loud sounds. User 1 and User 2 are special versions of Reflex Decay tests,
in which many of the measurement parameters may be pre-programmed
to suit the requirements of the user.
If Easy Mode has been selected, pressing Reflex displays the Manual Re-
flex screen illustrated in Fig.4.15 (unless this has been altered using the
ZODICON
TM
software).
If the default has been modified using the ZODICON
TM
software, the fol-
lowing default settings may differ from those shown in the Reflex
screens illustrated or referred to in the explanations:
y -axis scaling and
origin position, Pressure Control (MEP), attenuator increment, use of
threshold level in decay, Reflex fast/slow mode, threshold level incre-
ment, threshold fast screening maximum measure, and use of pump in
threshold air conduction.
Two markers (fixed cursors) may be applied to all reflex records. For a
description of the marker function, see §4.2.5.
4.2.1 MANUAL REFLEX
Softkey 1 Press Reflex , and then Softkey 1 if Advanced Mode has been selected,
to access the Manual Reflex screen for manual testing (Fig.4.15). The
manual test mode permits the duration of the stimulus presentation to
be manually controlled via the
Tone Switch .
40 Operation Manual
MANUAL MODE Chap. 4 GN Otometrics
REFLEX TESTING
4.2 ZODIAC 901 Middle-Ear Analyzer
Fig.4.14
Reflex sub-menu obtained when
Reflex is selected in Advanced
Mode