8-19 
Message 
Alarm 
Priority 
Cause  Solution 
the module.    3. Replace the AG module.   
ISO Over 
Range 
Low 
The monitored value 
exceeds the 
measurable range of 
the module.   
1. Reduce the concentration of the monitored 
gas to the normal range.   
2. Calibrate the AG module again. 
3. Replace the AG module.   
SEV Over 
Range 
Low 
The monitored value 
exceeds the 
measurable range of 
the module.   
1. Reduce the concentration of the monitored 
gas to the normal range.   
2. Calibrate the AG module again. 
3. Replace the AG module.   
DES Over 
Range 
Low 
The monitored value 
exceeds the 
measurable range of 
the module.   
1. Reduce the concentration of the monitored 
gas to the normal range.   
2. Calibrate the AG module again. 
3. Replace the AG module.   
Rate Over 
Range 
Low 
The monitored value 
exceeds the 
measurable range of 
the module.   
1. Reduce the respiration rate to the normal 
range.  
2. Calibrate the AG module again. 
3. Replace the AG module.   
8.2.7 BIS Module Runtime Alarms 
Message 
Alarm 
Priority 
Cause  Solution 
BIS Init Error  High 
The system cannot 
receive the initialization 
information of the BIS 
module.  
1. Reconnect the BIS module. 
2. If the problem persists, replace 
the BIS module. 
BIS Comm 
Abnormal 
High 
The waveform data 
packets are not received 
in 2s consecutively, or 
data packets of 
monitoring parameters of 
the BIS module are not 
received in 4s 
consecutively.  
1. Check the communication cable 
between the BIS module and the 
main system.   
2. If the problem persists, replace 
the BIS module. 
BIS Over 
Range 
Low 
The monitored value 
exceeds the measurable 
range of the module.   
Replace the BIS module.   
BIS L Over 
Range  Low 
The monitored value of 
BIS L exceeds the 
measurable range. 
Replace the BIS module.