Interacoustics Sera - Firmware

D-0114042-D – 2020/03
Sera™ - Additional Information Page 42
Firmware
Problem
Explanation
Solution
Sera
TM
shows an error
code on the screen.
Although Sera
TM
is
thoroughly tested, you
could have encountered
an unknown firmware
problem.
After a firmware error code appears, it is advised
to switch Sera
TM
off and on again.
If a problem persists, Interacoustics would very
much appreciate it if you report the problem and
the situation causing it to occur.
Cannot pass impedance
for one or more
electrodes (Automated
ABR testing).
Ineffective skin
preparation.
Remove electrode and use NuPrep or another skin
preparation product to prepare the skin.
Electrode has lost
contact with the skin.
Check contact of electrodes to the skin at the
prepared sites.
Electrode lead wire is not
fully attached to the
preamplifier.
Check connections to the preamplifier and try
again.
Electrode lead wire has a
short in the wire which
may lead to intermittent
contact.
Replace the electrode lead wire with a new one
(you may need to replace more than one of the
electrode wires).
Connection of
preamplifier cable to the
Sera
TM
transducer
connector is not secure.
Check the connection of the preamplifier cable to
the Sera
TM
; remove it and re-insert it verifying that
it is securely attached.
“Reconnect Electrode”
message during
Automated ABR testing.
Electrode is not in
contact with the skin.
Reapply the electrode to prepared skin site.
“Check Cables“
message during
Automated ABR
screening.
Electrode contact may be
poor.
Check electrode contact to skin.
“Mains noise” message
during ABR testing.
There is mains noise (50
Hz) in the environment.
Move away from the current test environment that
is contaminated with mains noise interference.
“Too Noisy” message
during OAE test.
High acoustic noise is
present during OAE test.
Quiet the baby or the environment.
“Out of ear” message
during OAE test.
The probe is coming out
of the ear or has fallen
out completely.
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.