Firmware - Interacoustics Sera Additional Information

Firmware

Problem
Sera shows an error
TM
code on the screen.
Cannot pass impedance
for one or more
electrodes (Automated
ABR testing).
"Reconnect Electrode"
message during
Automated ABR testing.
"Check Cables"
message during
Automated ABR
screening.
"Mains noise" message
during ABR testing.
"Too Noisy" message
during OAE test.
"Out of ear" message
during OAE test.
D-0114042-D – 2020/03
Sera™ - Additional Information
Explanation
Although Sera is
TM
thoroughly tested, you
could have encountered
an unknown firmware
problem.
Ineffective skin
preparation.
Electrode has lost
contact with the skin.
Electrode lead wire is not
fully attached to the
preamplifier.
Electrode lead wire has a
short in the wire which
may lead to intermittent
contact.
Connection of
preamplifier cable to the
Sera transducer
TM
connector is not secure.
Electrode is not in
contact with the skin.
Electrode contact may be
poor.
There is mains noise (50
Hz) in the environment.
High acoustic noise is
present during OAE test.
The probe is coming out
of the ear or has fallen
out completely.
Solution
After a firmware error code appears, it is advised
to switch Sera off and on again.
TM
If a problem persists, Interacoustics would very
much appreciate it if you report the problem and
the situation causing it to occur.
Remove electrode and use NuPrep or another skin
preparation product to prepare the skin.
Check contact of electrodes to the skin at the
prepared sites.
Check connections to the preamplifier and try
again.
Replace the electrode lead wire with a new one
(you may need to replace more than one of the
electrode wires).
Check the connection of the preamplifier cable to
the Sera ; remove it and re-insert it verifying that
TM
it is securely attached.
Reapply the electrode to prepared skin site.
Check electrode contact to skin.
Move away from the current test environment that
is contaminated with mains noise interference.
Quiet the baby or the environment.
It is recommended to stop the test and start again
since reinsertion of probe in ear needs a new in-
ear calibration process before testing.
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