Specifications

Troubleshooting Plug-in Modules 5-33
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Troubleshooting Plug-
in Modules
BIS HIGH IMPEDANCE Impedance of one or
more electrode(s) is
above the valid range,
most often caused by bad
skin preparation.
PIC or short cable of the
DSC faulty.
Press the electrode pads firmly.
If INOP persists, replace Sensor provid-
ing proper skin preparation.
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 PIC.
If INOP persists replace DSC
2
.
BIS ISOELECTRC EEG No discernible EEG
activity is detected for
longer than 1 minute.
Check the patient. Check the leads for
proper connection.
BIS SQI < 50% The signal quality is
below 50%. This may
occur as a result of arti-
fact such as those gener-
ated from motion or the
presence of electrocau-
tery 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).
1. To enter BIS Task Window press (in Monitoring Mode) MODULE SETUP fol-
lowed by BIS
2. Before ordering a new DSC, try another one of the same type, if available.
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