D-4
Measurement Alarm message L I Cause and solution
SpO
2
No Sensor L B sensor, or an unspecified SpO
2
sensor has been used.
Check the sensor application site and the sensor type,
and make sure if the sensor is damaged. Reconnect the
sensor or use a new sensor.
SpO
2
Unknown Sensor L C
SpO
2
Sensor Incompatible L C
SpO
2
Too Much Light L C There is too much light on the SpO
2
sensor. Move the
sensor to a place with lower level of ambient light or
cover the sensor to minimize the ambient light.
SpO
2
Low Signal L C The SpO
2
signal is too low or too weak. Check the
patient’s condition and change the sensor application
site. If the error persists, replace the sensor.
SpO
2
Weak Pulse L C
SpO
2
Interference L C The SpO2 signal has been interfered. Check for any
possible sources of signal noise around the sensor and
check the patient for great motion.
SpO
2
Board Fault L C There is a problem with the SpO
2
measurement board.
Do not use the module and contact your service
personnel.
NIBP NIBP Loose Cuff L A The NIBP cuff is not properly connected, or there is a
leak in the airway.
NIBP Air Leak L A
NIBP Pneumatic Leak L A Check the NIBP cuff and pump for leakages.
NIBP Cuff Type Wrong L A The cuff type applied mismatches the patient category.
Verify the patient category and replace the cuff.
NIBP Air Pressure Err L A An error occurred to the air pressure. Verify that the
monitor application site meets the environmental
requirements and check if there is any source that
affects the air pressure.
NIBP Weak Signal L A The patient’s pulse is weak or the cuff is loose. Check
the patient’s condition and change the cuff application
site. If the error persists, replace the cuff.
NIBP Signal Saturated L A The NIBP signal is saturated due to excess motion or
other sources.
NIBP Overrange L A The measured NIBP value is not within the specified
range.
NIBP-XX Over Upper Limit L A The measured pressure is greater than the specified
NIBP measurement upper limit.
NIBP-XX Over Lower Limit L A The measured pressure is lower than the specified NIBP
measurement lower limit.
XX represents diastolic pressure, mean pressure, or systolic pressure.
NIBP Excessive Motion L A Check the patient’s condition and reduce the patient
motion.
NIBP Cuff Overpress. L A The NIBP airway may be occluded. Check the airway
and measure again.
NIBP Equip Err H A An error occurred during NIBP measurement and
therefore the monitor cannot perform analysis
correctly. Check the patient’s condition and NIBP
connections, or replace the cuff.
NIBP Timeout L A
NIBP Measure Failed L A
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