Maico easyScreen, Руководство по эксплуатации

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Operation Manual easyScreen
8508935 Rev. 4 23 04/04/2019
3.4 Troubleshooting
– ABR Issues
In case of problems see below for symptoms, possible causes and suggested troubleshooting.
Table 2 Troubleshooting
SYMPTOM POSSIBLE CAUSE SUGGESTED TROUBLESHOOTING
Cannot pass
impedance for
one or more
electrodes Ineffective skin
preparation Remove electrode and use NuPrep
®
or other
skin preperation 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 at the preamplifiercable
jack and try again.
Electrode lead wire has
a short in the wire Replace the electrode lead wire with a new
one (may need to replace more than one of
the electrode wires).
Connection of preamplifier
or BERAphone
®
cable to
the easyScreen ABR/OAE
connector is not secure
Check the connection of the preamplifier or
BERAphone
®
cable to the easyScreen;
remove it and re-insert it verifying that it is
securely attached.
Excessive
artifacts are
observed
during the
measurement Baby is too active,
moving, sucking, crying,
muscle tension, etc. Pause the recording and calm the baby.
Swaddle the baby in a blanket. Resume
recording only when the baby is quiet.
Electrode is losing
contact with the skin Check electrode contact to skin making sure it
is contacting the prepared skin.
Electrode lead wire has
a short in the wire or
BERAphone
®
electrode
has poor internal
contact which may lead
to intermittent contact
Replace the electrode lead wire with a new
one (may need to replace more than one of
the electrodes).
Electrical interference is
interfering due to AC
connection If easyScreen is being used in the cradle with
AC attached, unplug the cradle power supply
from the outlet to run on battery only.
Electromagnetic
interference is present
from other electronic
devices in the
environment Shut down all unnecessary devices near the
test area including cell phones, tablets, lights,
TVs, etc. Move as far away as possible from
devices that cannot be powered off.
Ask the baby’s doctor or nurse to assist with
troubleshooting if the baby is connected to
monitoring devices to determine if they can be
powered off temporarily for troubleshooting.
RFID devices used for security that are
attached to or near the baby may cause
interference. Ask the nurse or doctor if they
can be temporarily removed.
Try testing in a different location.
High refer rate Screening babies when
they are too active Perform screenings only when the baby is quiet
–
preferably sleeping, comfortable, and recently fed.
Screen just after feeding when Mom is still
holding the baby.