a l a r m s / m e s s a g e s
5-2
Radical Signal Extraction Pulse Oximeter Operator’s Manual
5
Radical Signal Extraction Pulse Oximeter Operator’s Manual
5-3
5
a l a r m s / m e s s a g e s
S y s t e m m e s s a g e s
The following chart alphabetically lists all system messages displayed on the LCD
screen. The cause of the message, and the action(s) to be taken are also shown.
The operator should become thoroughly familiar with this information before using the
oximeter for patient monitoring.
MESSAGE
POSSIBLE CAUSE(S)
RECOMMENDATION
AMBIENT LIGHT
Too much light on patient
(sensor). Inadequate tissue
covering sensor detector.
Remove or reduce lighting. Cover sensor
from light. Reposition sensor.
DEFECTIVE
SENSOR
Oximeter cannot identify
the connected sensor the
sensor has failed.
Broken sensor cable wire or inoperative
LEDs or faulty detector; Replace sensor.
Refer to the instructions for the sensor
being used.
INTERFERENCE
Outside signal or energy
preventing reading.
Remove outside interference.
INVALID SENSOR
Oximeter cannot identify
the connected sensor
Broken sensor cable wire or inoperative
LEDs or faulty detector; the sensor has
failed. Replace sensor. Refer to the
instructions for the sensor being used.
LOW BATTERY
Battery charge is low.
Charge battery by placing the Radical
Handheld into the Docking Station and
powering the unit with AC line power.
Replace battery if necessary.
LOW PERFUSION
Signal too small.
Move sensor to better perfused site. Refer
to Section 4,
Low Perfusion.
LOW SIGNAL IQ
Low signal quality.
Ensure proper sensor application. Move
sensor to a better perfused site. Refer to
Section 4,
Signal IQ.
A l a r m o p e r a t i o n
The Radical audibly alarms when the saturation measurement or pulse rate
measurement exceeds the low or high saturation or pulse rate alarm limits. The Radical
allows a user to delay audible saturation alarms by 0, 5 or 10 seconds, by selecting the
appropriate setting in the Alarm - Delay menu.
A delayed saturation alarm is visually indicated by a flashing alarm bell on the Radical
display, and a flashing saturation and alarm limit indicator. An active alarm condition is
visually indicated by a flashing alarm bell, a flashing saturation and alarm limit indicator
on the Radical display, and a flashing red alarm indicator on the Docking Station.
Saturation changes of greater than 5% in excess of the alarm limit are indicated
immediately, regardless of alarm delay setting. In addition, alarms are audibly indicated
according to the Alarm Silence / mute setting in the Alarms menu.
A l a r m m e s s a g e s
Alarm messages indicate a problem or condition, which may affect accurate monitoring
values. Do not ignore these messages. Correct any fault before continuing.
Press the Alarm Silence key to temporarily silence the audible alarm. Alarm messages
and violating values flash on the display, and the Docking Station front panel alarm
indicator flashes red if the Handheld unit is in the Docking Station. If the measurement
returns to within limits, the alarm turns off.
A list of alarm conditions that cause audible and visual alarm indications and the
displayed alarm messages are shown in the following table. The reason of why these
alarms might occur is also shown.
MESSAGE
DESCRIPTION
SENSOR OFF
The sensor is not properly attached to the patient.
NO SENSOR
The sensor is not properly attached to the monitor.
SpO
2
HIGH
The high SpO
2
rate limit has been exceeded.
SpO
2
LOW
The low SpO
2
rate limit has been exceeded..
PR HIGH
The high pulse rate limit has been exceeded.
PR LOW
The low pulse rate limit has been exceeded.
