SpectroEye™ 35
2
If you select Auto, SpectroEye will automatically use the
white base usually adopted for the selected function.
For densitometric functions, this is the white base of paper,
while for spectrophotometric functions it is the absolute
white base.
- Illuminant
To calculate the special color values, select the desired
normalised illuminant.
The most commonly used normalised illuminants are
immediately available:
A, C, D65, D50, F2, F7, F11
The normalised illuminants of D and F series must be
set-up using the Dxx and Fxx menu items. When you
perform this selection, an additional menu line appears,
where you can select the desired color temperature.
Here the following illuminants are available:
Fxx: F1 to F12
Dxx: D30 to D300
- Observer angle
When analysing the colorimetric values, the calculation
and consequently the result depend on the definition of
the observer angle.
In this menu line you must select the observer angle,
normally between 2° and 10°.
- Density standard
If you wish to use the SpectroEye spectrophotometer
also as a densitometer, you must define which density
standard to operate with.
In this menu line select either:
DIN, DIN NB, ANSI A, ANSI T, SPI
Save your settings in the Measurement conditions menu
using Accept data and proceed with:
• Pass/Fail tolerance
When you work with Series measurements or Jobs,
immediately after the reference and sample measurement,
you obtain an evaluation in terms of pass/fail.
The measured values are included in (Pass) or excluded
from (Fail) based on the tolerance values defined in
this menu.
2 • Use
Usually the normalised illuminan
for the Graphic Arts industry used
in the USA is D50 while in Europe
it is D65.
Normally the density standard used
in the USA is ANSI T while in
Europe it is DIN. As a guide line it
is advisable to select the settings
corresponding to the set of physical
filters available on the densitometer,
should one already be in use.
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You can freely select one of the two
settings. It is extremely important
that for color comparison the selected
setting is always kept constant.
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