UltraScan PRO Supplemental Manual for EasyMatch QC Ver. 2.0
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Figure 6. Specular Exclusion Port Open
The UltraScan PRO features automated specular included/excluded port control and sensing. This
feature allows you to set the port to the desired position from EasyMatch QC. The software reports the
position, thereby allowing errorless measurements.
Indicator Lights
The UltraScan PRO’s indicator lights let you know what mode of standardization is currently in use.
The top light indicates that power is on. The second light indicates that the specular exclusion port is
open. The third light indicates that small or medium area view is in use, and the bottom light indicates
that the Ganz-Griesser UV filter calibration is in use.
Figure 7. Indicator Lights
Automated UV Control
The UltraScan PRO performs a Ganz-Griesser calibration, which uses a 400-nm UV filter to achieve and
maintain the proper ratio of the energy in the UV region of the electromagnetic spectrum to that in the
visible region of the spectrum. This improves the agreement of the illumination between different
instruments and keeps illumination constant as the instrument’s lamp ages. This calibration should be
used when measuring colors that fluoresce due to illumination by light in the UV range of the
electromagnetic spectrum (such as optically-brightened whites).
For the Ganz-Griesser calibration, a stable, fluorescent white transfer standard marked with an
assigned Ganz whiteness (normally assigned in reflectance-specular excluded mode) is used to set the
correct illumination conditions. The assigned value is traceable to a four-step cotton white scale
Power on
Specular excluded
Small or medium
area view
UV filter
calibration
