C-7
C.2.8 Nellcor SpO
2
Module Alarm Messages
Alarm message A B L Cause Measure
SPO2 SENSOR
OFF
No Yes 3 The sensor is
disconnected from the
patient or the monitor.
Make sure the sensor is placed
on the patient’s finger or other
parts, and the monitor is
connected to cables correctly.
The sensor is
disconnected from the
patient or the monitor,
or the sensor is not
connected properly.
Disconnect and reconnect the
sensor as directed by the
instructions. If the alarm
remains, the sensor or the cable
might have been damaged.
SPO2 NO
SENSOR
Yes Yes 3
The SpO2 probe is
inserted upside down.
Disconnect and reconnect the
sensor as directed by the
instructions. Pay attention to the
mark on the probe.
SPO2
INTERFERENC
E
No No 3 The pulse signals are
subject to great external
interference.
Reduce or remove external
interference.
SPO2 BOARD
FAULT
No No 1 The SpO2 set board
malfunctions and might
be unable to measure
the pulse signals
correctly.
Stop using the SpO2module,
and contact biomedical
engineers or our company for
maintenance.
SPO2 MOTION No No 3 The patient is moving. Reduce patient motion.
SPO2 SENSOR
FAULT
No No 1 The probe is damaged. Stop using the sensor.
SPO2 WEAK
SIGNAL
No No 3 The SpO2 signal is
weak.
SPO2 WEAK
PULSE
No No 3 The detected pulse
signal is too weak.
Change the sensor site for better
signals.
C.2.9 IBP Module Alarm Messages
Alarm message A B L Cause Measure
IBP1 SENSOR
OFF
No Yes 3 The invasive blood
pressure cable of channel 1
is disconnected from the
monitor.
Check if the IBP 1 sensor is
properly connected.
IBP2 SENSOR
OFF
No Yes 3 The invasive blood
pressure cable of channel 2
is disconnected from the
monitor.
Check if the IBP 2 sensor is
properly connected.
IBP1 NEED
ZERO-CAL
No No 3 The IBP transducer of
channel 1 has not been
zeroed.
Zero the IBP transducer of
channel 1.
IBP2 NEED
ZERO-CAL
No No 3 The IBP transducer of
channel 2 has not been
zeroed.
Zero the IBP transducer of
channel 2.
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