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3.ERROR MESSAGES
Error Messages
Cause Solution
The Measure-
ment
Value and
The Measure-
ment
Value and
flash alternately
• Insufficient light for
measurement.
• Strong light enters the
finger
holder's sensor
director
y.
• Pulse signal required
for
measurement is
not being received.
• Motion artifact
• The pulse rate ex-
ceeds
the upper limit
(250 bpm ) of the
measurement range
.
• The pulse is weak
and
the pulse signals
required for the meas
-
urement are not ob
-
tained.
The measure-
ment
value is dis-
played, howeve
r, the
accuracy
of the
measurement values
cannot be guaran-
teed.
Thus, the meas-
ured value must be
considered
as guid-
ance onl
y.
• Check that the finger holder is properly
attached to the patient.
• Clean the light-source and sensor sec-
tions.
• Take measures to prevent direct entry
of strong light to the finger holde
r.
• Check that the finger holder is properly
attached
to the patient. If the finger
holder
is properly attached but this
message
still appears, the circulation
in
the area being measured may not
be
good. If this occurs, warm up the
measurement location.
• Attach the finger holder to the patient
properl
y. If this message still reappears
even
though the finger holder is attached
properl
y, keep the measuring point as
stationary as possible.
• Measurement cannot be performed
when
the upper limit of the measure-
ment range is exceeded.
• Attach the finger holder to the body
correctly. If this message is displayed
when
the unit is attached to the patient
correctl
y, the measurement conditions
are
regarded as blood circulation or
other circulatory problems. If this
occurs,
warm up the measurement lo-
cation.
• In particular, when the pulse is weak,
this
error tends to occur. For improved
measurement
accuracy, if the finger
holder
is exposed to strong light, wrap
it
with a piece of black cloth, etc. Also
make
sure that the patient rests calmly
to avoid influence of body movement.
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