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Error
Symptom
No.
8
Measurement values are
inconsistent.
9
Measurement values
appear incorrectly.
10
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
significantly?
Did you start measurement
immediately after startup?
Is the objective lens clean?
User calibration may not be
performed correctly.
Is the calibration channel
correct?
Is the closeup lens
attached?
Has the ND filter been
attached?
Has the object been
focused?
Is the measuring object of
high luminance?
99
Corrective action
Conduct measurement while the
measuring object is 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 0.1º.
It also worsens when the
measurement time is short. Make the
measurement time longer.
Set the appropriate measurement
sync frequency.
Use the MULTI INTEG-NORMAL mode
or the MULTI INTEG-FAST mode.
Measure in the EXT SYNC mode.
Perform measurement under an
environment free from changes in
ambient temperature and humidity.
Allow the instrument to warm up for
20 minutes or more from when the
power is switched on.
Should dirt get on the lens, wipe it off
with a dry and soft cloth or lens
cleaning paper.
Check the values without user
calibration (i.e. set the calibration
channel to 00 (OFF)).
Select the calibration channel
according to the light source of
luminance and chromaticity 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
page
—
70,
26
31,
28
3
23
5
66
66
50,
70
52
13,
15,
71
52
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