USTER HVI SPECTRUM, Instruction Manual, Page: 94 / 230

USTER
® HVI SPECTRUM
Instruction Manual
2.6.1 Changing the SCI Equation
The SCI equation may be modified for installations where no Rd color
data is available. Follow the steps below to change the SCI Equation:
1. Estimate a typical average value for the Rd of your cotton.
2. Multiply that Rd value by 0.65 (i.e. 74.0 x 0.65 = 48.1).
3. Add the results to the -412.7 constant (i.e. -412.7 +48.1= -364.6).
4. Change the constant coefficient from -412.7 to -364.6.
5. Replace the Rd coefficient with zero.
Figure 6-16: USTER® SCI Regression Coefficients Tab
6. Enter the Actual SCI Regression Coefficients amounts in each
field.
7.
Select the A
PPLY
button to continue making changes to the system
configuration.
8.
Select the OK button to save the changes and exit the screen.
Uster Technologies, Inc. Chapter 6
Configurations • Page 6-18