Scattering & Absorption Coefficients & Powers; Din53147 Transparency; Helmholtz Coordinates - Datacolor Elrepho 3000 Manual

Elrepho 3000
Diffuse Opacity requires measurements for either Method 1 (over
black trap, then over stack), or Method 2 (over black trap, then over
white standard).
Scattering & Absorption Coefficients & Powers (3100
and 3300 models)
This paper measurement task (ISO TC6/SC2/WGI 1979) can be
computed with any illuminant/observer combination supported by
the DIN 53140 reflectance factors.
The computed Scattering Coefficient "S", Scattering Power "SX",
Absorption Coefficient "K", and Absorption Power "KX" will be
displayed.
These computations require measurements for either Method
1,(over black trap, then over stack), or Method 2 (over black trap,
then over white standard).
DIN 53147 Transparency (3100 and 3300 models)
These values can be computed with any illuminant/observer
combination supported by the DIN53140 reflectance factors.
The results will be labeled "T" when displayed.
These computations require measurements for either Method 1,
(over black trap, then over stack), or Method 2 (over black trap,
then over white standard).
.
Paper Tasks(cont)
Helmholtz Coordinates (3100 and 3300 models)
The Helmholtz coordinates for newsprint is always performed with
the C illuminant and 2° observer.
The computed Dominant Wavelength will be labeled "DW" when it
is displayed, and the computed Excitation Purity will be labeled
"PE".
50 Datacolor International