D-13 
BIS Overrange  H
SQI Overrange  H
SR Overrange  H
The measured value is outside of the measurement range. 
Contact your service personnel.   
BIS High Imped.  M
BIS Sensor Off  L
Check sensor connections. Re-connect the sensor. 
BIS DSC Error  M BIS DSC signal reception error. Check the DSC. 
 
BIS DSC Malf  H BIS DSC switched off due to malfunction. Check the 
DSC. 
BIS No Cable  L Connect the BIS cable. 
BIS No Sensor  L Connect the sensor. 
BIS Wrong Sensor 
Type 
L Check or replace the sensor. 
SQI<50% L
SQI<15% L
SQI is too low. Check the patient’s condition and sensor 
connection. 
BIS Sensor Expired  L Replace the sensor. 
BIS Sensor Failure  M Put the sensor again or replace the sensor. 
BIS Sensor Too 
Many Uses 
L Replace the sensor. 
Disconnect/Reconn
ect BIS 
H Re-plug the BIS module.