
5-4 Radical-7 Signal Extraction Pulse CO-Oximeter Operator’s Manual
5
MESSAGE POSSIBLE CAUSE(S) RECOMMENDATION
LOW SIGNAL
IQ
Low signal quality.
Ensure proper sensor application.
Move sensor to a better perfused
site. Refer to Section 4, Signal IQ.
LOW SpCO SIQ
SpCO measurement reading is
obscured.
Ensure proper sensor application. Check
sensor to see if it is working properly. If
not, replace the sensor. Refer to Section 4,
Numeric Display - SpCO.
LOW SpMet SIQ
SpMet measurement reading is
obscured.
Ensure proper sensor application.
Check sensor to see if it is working
properly. If not, replace the sensor.
Refer to Section 4, Numeric Display
- SpMet.
LOW SpHb
SIQ
SpHb measurement reading is
obscured.
Ensure proper sensor application.
Check sensor to see if it is working
properly. If not, replace the sensor. Refer
to Section 4, Numeric Display - SpHb.
SPEAKER
FAILURE
Instrument requires service.
Contact Masimo Tech Support. Refer
to Section 9, Service and Repair.
NO CABLE
Cable not attached or not fully
inserted into the connector.
Disconnect and reconnect cable
into connector.
NO SENSOR
Sensor not fully inserted into the
connector.
May be an incorrect sensor, or a
defective sensor or cable. Insert
sensor into connector. Disconnect
and reconnect sensor. Refer to the
instructions for the sensor being used.
Instrument is searching for patient’s
pulse.
Disconnect and reconnect the
sensor into the Patient Cable
Connector.
PULSE SEARCH
Instrument is searching for patient’s
pulse.
If values are not displayed within 30
seconds, disconnect and reconnect
sensor. If pulse search continues,
remove sensor and replace on a
better perfused site.
SENSOR
CALIBRATING
Instrument is checking the
sensor for proper functioning and
performance.
If values are not displayed within 30
seconds, disconnect and reconnect
sensor. If values are still not
displayed, replace with a new sensor.
SENSOR OFF
Sensor off patient.
Disconnect and reconnect sensor.
Reattach sensor.
SERVICE
REQUIRED*
Internal Failure. Instrument requires service.
UNRECOGNIZED
CABLE
Not a proper cable.
Replace with a proper cable. Refer
to Section 8.
*The SERVICE REQUIRED message fills the entire display. This is a numeric error code. Contact
Masimo for service.
Alarms and Messages
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