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Appendix B
Procedural and Error Alarm Codes
Alarm
Code
LED
Display
LCD Description
Audible Tone
and Volume
Effect of
Alarm Silence
Switch
Effect of
Clear via
SelectKnob
Probable Cause
N99
No
change
N99 -
NIBP FAILED
High priority
alarm. Volume
adjustable
2 minutes
silence
Clear
Unable to make an NIBP
determination due to
insufficient signal
N55
No
change
N55 -
TIMEOUT: PRESS
High priority
alarm. Volume
adjustable
2 minutes
silence
Clear
One cuff pressure for > 1
minute. Motion artifact
N44
No
change
N44 -
TIMEOUT: TOTAL
High priority
alarm. Volume
adjustable
2 minutes
silence
Clear
Determination time > 2
minutes. Motion artifact
N33
No
change
N33 -
TIMEOUT: INFLT
High priority
alarm. Volume
adjustable
2 minutes
silence
Clear
Inflation time > 40 seconds
or air leak detected
N00
No
change
N00 -
OVER PRESSURE
High priority
alarm. Volume
adjustable
2 minutes
silence
Clear Overpressure detected
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