Aspect Medical Systems BISPECTRAL INDEX A-2000, Руководство по обслуживанию

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SECTION VI DIAGNOSTICS AND TROUBLESHOOTING
- 6-10 -
Table 6.4 Automatic Diagnostic Error Messages, Causes and Corrective Actions
(CONTINUED)
Failure Messages:
Causes: Corrective Actions:
EEG Signal
E25
Left Side SQI Bad With 2-channel montage,
left side signal quality is
bad.
1. Re-prep the Sensor.
2. Check impedances.
E26
Right Side SQI Bad
With 2-channel montage,
right side signal quality is
bad.
1. Re-prep the Sensor.
2. Check impedances.
E27
Poor Signal Quality The Signal Quality Index is
less than 50% and the
numeric display becomes
“hollow”.
This may occur as the result
of artifact such as those
generated from motion or
the presence of
electrocautery devices.
1. Re-prep the Sensor.
2. Check impedances.
E28
Bad Signal Quality The Signal Quality Index is
unacceptable. The Primary
Trend variable cannot be
calculated and therefore the
numeric display is blanked.
This may occur as the result
of artifact such as those
generated from motion or
the presence of
electrocautery devices.
1. Re-prep the Sensor.
2. Check impedances.
E29
BIS < Low Alarm Limit The BIS has fallen below
the low alarm limit set by
the user. The numeric
display flashes.
E30
BIS > High Alarm Limit The BIS has risen above
the high alarm limit set by
the user. The numeric
display flashes.
E31
Isoelectric EEG Detected No discernible EEG activity
is detected for several
minutes; SR = 100. 1. Check the patient.
2. Check leads for proper
connection and possible
shorts.