USTER HVI 900 - Interval; Number of Categories; How the Category System Works

USTER® HVI 900 Instruction Manual
Uster Technologies, Inc. Chapter 8
Version 4.0 (1.99) 940 DataManager - Page 8-4
3.6 Interval
This is the range or width between Categories. 940 DataManager uses
intervals to determine where each Category begins and ends. Sample
test results are assigned to Categories according to where they fit in the
Categories.
Intervals between Categories differ according to the fiber property. If
the intervals are small, an excessive number of Categories might be
created. For yarn spinners, large intervals between the Categories may
not allow good control of the variation within a mix or between mixes.
3.7 Number of Categories
Each fiber property can have up to 20 categories. In order for yarn
spinners to keep warehousing as simple as possible, the number of
Categories should be limited to the smallest number reasonable for the
range of cotton in inventory.
• Using the arrow keys to move among the fields, enter the Category
Definitions for all fiber properties. When finished, press the ESCAPE
key to save the information and return to the DATAMANAGER MENU.
3.8 How the Category System Works
Each sample is placed into a Category for each fiber property. The
Category Definitions require an estimate of the average value and
range of each property for the samples that will be tested. As
previously mentioned, the steps used to determine these values are
explained in the Appendix section of this manual.
Note: If you export the data to BIAS, you should use the same Category
Definitions for 940 DataManager and BIAS Categories.