Specifications

5-32 Troubleshooting Plug-in Modules
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Troubleshooting Plug-
in Modules
BIS SENSOR DISCONN Sensor not properly con-
nected to PIC and/or PIC
not properly connected to
DSC.
Sensor or PIC or short
cable of DSC faulty.
Make sure that the BIS Sensor is prop-
erly connected to the PIC and the PIC is
properly connected to the DSC.
If INOP persists, perform a PIC/DSC
Test as described under Self-Test Proce-
dures for BIS components on page 5-34.
If it fails replace Sensor.
If INOP persists replace PIC.
If INOP persists replace DSC
2
.
BIS SENSOR INCOMP Unsupported Sensor con-
nected or Sensor type
unknown.
PIC or short cable of the
DSC may be faulty.
Make sure to use only Agilent supported
Sensors.
Perform the PIC/DSC Test as described
under Self-Test Procedures for BIS com-
ponents on page 5-34.
If it fails replace PIC.
If INOP persists replace DSC
2
.
BIS SENSOR USAGE Sensor expired due to too
often usage.
PIC or short cable of the
DSC may be faulty.
Replace Sensor.
Enter BIS Task Window. Make sure all
leads have passed the Cyclic Impedance
Check, which has been automatically
performed.
Perform the PIC/DSC Test as described
under Self-Test Procedures for BIS com-
ponents on page 5-34.
If it fails replace PIC.
If INOP persists replace DSC
2
.
BIS SQI < 15% The signal quality is
below 15% and the BIS
value cannot be cacu-
lated. This may occur as a
result of artifact such as
those generated from
motion or the presence of
electrocautery devices.
Make sure the Sensor is properly
attached to the patient: Enter BIS Task
Window
1
and press “START CHECK”
to initiate a Cyclic Impedance Check.
Make sure all leads have passed the test.
Make sure the patient is completely
relaxed (even small motions of the facial
muscles affect the signal quality).
BIS IMPEDANCE CHCK The Cyclic Impedance
check is running.
Wait until Cyclic Impedance Check has
finished or press “STOP CHECK” in the
Cyclic Check Task Window.
BIS LEAD OFF One or more leads (elec-
trodes) have no skin con-
tact.
Press the electrode pads firmly.
If INOP persists, replace Sensor provid-
ing proper skin preparation.
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