Path medical Senti, User Manual

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Page 19 / 44
When conducting a measurement, please consider the following aspects:
If necessary for appropriate test performance (e.g. Audio, OAE), the device must be used in
a quiet environment (e.g. soundproof cabin, room with low ambient noise). For
measurements with ear probes (e.g. OAE) also a sound insulation headphone can be used. For AEP
measurements (e.g. ABR, ASSR) acoustical noise is less influential on test performance than muscle
artefacts (e.g. patient movement). For AEP measurements also make sure to test in an environment
with low electromagnetic disturbance from electronic devices (e.g. computers, lights, other
electronic medical devices) as electromagnetic radiation may deteriorate AEP test performance. It is
recommended to perform AEP tests in a shielded cabin. Please consider local regulations regarding
requirements for the test environment.
OAEs are most likely not present in ears with sound-conductive hearing loss, since both the
stimulus and the response amplitude are reduced due to the damping of the middle ear.
Please use only the large ear tips together with the large probe tip (PT-A) and the small ear
tips together with the small probe tip (PT-S). A wrong combination of ear tip and probe tip
may deteriorate test performance. See also advice in the accessory box. If in doubt about what
combination is correct, please contact your distributor.
If possible, do not hold the ear probe while it is placed inside the ear during OAE testing.
This may introduce noise into the measurement. Common sources of noise are acoustical
(room noise), biological (patient breathing, moving, talking, chewing, etc.), or physical (ear probe
movement) noise.
For further information and details about the various test modules, potential clinical
applications and recommendations for combining different test procedures please refer to
the How-To-Manual , which can be downloaded from www.pathme.de/support.
3.5.9 Error Handling
If an error occurs with your device please check the below list and proceed as recommended in
Table
4 . Further information about error handling can be found in section 3.5.4: Hardware Tests or in the
online FAQ (www.pathme.de/support/faq).
Error Recommended action for troubleshooting
Black display The display is automatically deactivated after 2 minutes (time span configurable)
without user activity in order to increase use time without recharging. Touch the
display in order to leave the power saving mode.
No feedback, black
display After 10 minutes (time span configurable) without user activity the device automatically
powers down completely. Start the device by pressing the on-switch.
No feedback, black
display, device
stalled If the device does not respond to user action you might need to restart the device by
pressing the reset switch (see section
3.4.2: Device Reset ). Charge the battery if
necessary.