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Error
Symptom
No.
8
Measurement values
are inconsistent.
9
Measurement values
appear incorrectly.
0
The measurement
stops halfway and does
not finish in the set
measurement time.
Item to Check
Is the measuring object
stable?
Is the measuring object
of low luminance?
Is the measurement
sync frequency
appropriate when
measuring the display?
Have the ambient
temperature and /or
humidity changed
rapidly?
Did you start
measurement
immediately after
startup?
Is the objective lens
clean?
User calibration may not
be performed correctly.
Is the calibration
channel correct?
Has the closeup lens
been attached?
Has the ND filter been
attached?
Has the object been
focused?
Is the measuring object
of high luminance?
83
Corrective Action
Conduct measurement with the
measuring object stable.
Repeatability of x, y worsens if
the measuring object of low
luminance is measured.
It especially worsens when the
measurement angle is 0.2º or
0.º.
It also worsens when the
measurement time is short.
Make the measurement time
longer.
Set the appropriate
measurement sync frequency.
Use MULTI INTEG-NORMAL
mode or MULTI INTEG-FAST
mode.
Measure in EXT SYNC mode.
Conduct measurement under an
environment free from rapid
changes in ambient temperature
and humidity.
Allow the instrument to warm up
for 20 minutes or more when the
power switch is turned on.
Wipe off the lens with a dry, soft
cloth or lens cleaning paper.
Check the values without user
calibration (i.e. set the calibration
channel to 00 (NON) and check).
Select the calibration channel
according to the light source of
luminance and chroma close to
the object.
Select the lens type setting
according to the attached
closeup lens.
Select the ND filter setting
according to the attached ND
filter.
Adjust the focus after adjusting
the diopter.
When measuring an object of
high luminance, the sensor may
be saturated by exceeding the
upper limit of the current
measurement setting.
Use the ND filter.
Reference
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43, 52
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