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Technical Alarm Messages (INOPs)
INOP Message, Indication
BIS ENGINE MALFUNC
INOP tone
BIS EQUIP MALF
INOP tone
BIS HIGH IMPEDANCE
INOP tone may sound
BIS IMPEDANCE CHCK
INOP tone may sound
BIS ISOELECTRC EEG
BIS LEAD OFF
INOP tone may sound
BIS OVERCURRENT
INOP tone
BIS SENSOR DISCONN
INOP tone
BIS SENSOR INCOMPT
INOP tone
BIS SENSOR MALFUNC
INOP tone
Source
What to do
BIS
Malfunction in the BIS engine hardware. Disconnect and
reconnect the BIS engine. If the INOP persists, replace BIS
engine.
BIS
There is a malfunction in the BIS hardware. Unplug and replug
the BIS module. If the INOP persists, contact your service
personnel.
BIS
Impedance of one or more electrode(s) is above the valid range,
most often caused by bad skin preparation. Check the sensor
montage and press the electrode pads firmly. If this INOP
persists, replace the sensor(s) in question using correct skin
preparation.
If INOP persists, contact your service personnel.
BIS
The Cyclic Impedance check is running. It will stop
automatically if all impedances are within the valid range. If
any electrodes do not pass the impedance test, check the sensor
montage and press the electrode pads firmly.
To manually stop the Cyclic Impedance Check, select
Cyclic Check
BIS
No discernible EEG activity is detected for longer than one
minute.
Check the patient. Check that the electrodes are properly
connected.
BIS
One or more electrodes have no skin contact and therefore
impedances cannot be measured. Check the sensor montage
and press the electrode pads firmly.
If this INOP persists, replace the sensor(s) in question, using
correct skin preparation.
BIS
Unplug and replug the BIS module or, f or the MP20/MP30,
disconnect and reconnect the BISx from the Interface board. If
the INOP persists, contact your service personnel.
BIS
The sensor is not properly connected to the patient interface
cable (PIC) and/or the PIC is not properly connected to the
DSC or BISx, or the sensor or PIC or DSC or BISx may be
faulty.
Check all the connections.
Disconnect and reconnect the sensor, PIC, DSC, BISx.
If the INOP persists, replace the sensor.
If the INOP persists, replace PIC. If INOP persists, contact
your service personnel.
Silencing this INOP switches the measurement off.
BIS
Unsupported sensor connected or sensor type unknown or not
supported by your software revision. Replace the sensor, using
only Philips supported sensors.
BIS
Malfunction in the sensor hardware, most often caused by
liquids permeating into the connectors OR patient interface
cable (PIC) or DSC or BISx may be faulty.
Replace the sensor. Manually initiate a Cyclic Impedance
Check. Make sure all electrodes pass the test. Make sure that
the both sides of the PIC connector (between PIC and sensor)
are dry. If you are not sure that the connector is dry, replace the
PIC until it has dried. If this INOP persists, contact your
service personnel.
5 Patient Alarms and INOPs
off in the
Setup BIS
menu.
63
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Troubleshooting
