Interacoustics Titan Instructions For Use Manual page 74

Titan Instructions for Use - EN Page 70
Impedance is not ideal warning window will appear if any of the
electrode impedance indicators are amber in color. The user
needs to confirm whether they wish to proceed with testing if
impedance values are poor.
Poor impedance can lead to longer test times and noisier
recordings.
When enabled in the software, the Residual Noise value and the
Residual Noise Stopping Criteria will be displayed.
The Residual Noise value will update during the test as the
measurement is progressing.
If the Residual Noise value reaches the Stop testing at (nV)
value before a Pass has been detected, the test will stop
automatically and the result displayed will be a Refer.
The efficiency of the method used for determining the residual
noise level is described in the following article:
Elberling, C., & Don, M. (1984). Quality estimation of average
auditory brainstem responses. Scand Audiol, 13, 187-197.
Screening results can be PASS, REFER or INCOMPLETE and
are indicated above the measurement as soon as the result is
available. If the "Enabled Pass/Refer" checkbox is not checked
for the selected protocol, no labeling will appear.
The statistical significance of the factory CE-Chirp 35dBnHL
protocol is:
Algorithmic Sensitivity: 99.9%
Specificity: > 96%
For user defined protocol using settings or stimuli other than
those in the factory protocol, the detected result is dependent
upon a combination of the following settings defined in the
protocol setup: Test time, stimulus type, stimulus intensity,
weighting, residual noise limit.
EEG too high indicates that the EEG peak level causes rejection
of the measurement.
Reconnect electrode indicates that the impedance of one of the
electrodes is so high that either the electrode has lost contact with
the skin or the electrode cable is disconnected or broken. All
measurements are rejected while this message is displayed on
screen.
EEG too low indicates that the impedance between electrodes is
so low that it is likely that two or more electrodes have short
circuited. All measurements are rejected while this message is
displayed on screen.
Connect transducer means that there is no transducer
connected the PreAmplifier.
Connect PreAmp indicates that the PreAmplifier is not
connected to the Titan.