SpO
2
 Troubleshooting and SpO
2
 Menu Performance Considerations SpO2 Monitoring
6 - 12 0070- 0-0704-02 Passport V Operating Instructions
Refer to Chapter 14.0 Messages for Physiological Alarm Messages, Technical Alarm 
Messages, and Prompt Messages.
Low amplitude SpO
2 
signal
SpO
2 
sensor on same limb as 
cuff.
Check sensor placement, 
move as necessary.
Patient has poor perfusion. Switch limb / Notify 
physician.
“– – –” in Digital Data Data is above maximum 
value.
Data is below maximum 
value.
Parameter is not available.
Lead or sensor is off.
Check sensor placement, 
move as necessary. Switch 
limb/Notify physician.
PROBLEM REASON SOLUTION
0