USTER
®
HVI SPECTRUM
Instruction Manual
Uster Technologies, Inc. Chapter 15
Glossary • Page 15-10
made on the basis of absolute reflectivity rather than trash contrast, so
variations in cotton background do not affect the readings.
Trash Area — The ratio of the accumulated areas of all the trash
particles to the area of the viewing window of the instrument.
Trash Code — The range where the tested sample falls according to
the levels determined during calibration.
Trash Count — The number of individual particles of trash in the
sample that are 0.01 inch in diameter or larger.
Unf — Abbreviation for Uniformity that appears as a report header.
Uniformity — The ratio, expressed in percent, of two length
measurements.
Upper Half Mean Length — The average length, by number, of the
longer half (50%), by weight, of the fibers in a sample.
USDA Color Grade — A three-digit code associated with the
Universal Standards of American Upland Cotton.
Version — The revision level of the software.
Window — In the
HVI SPECTRUM
software, the windows are the
sections of the screen bordered by single or double lines that present
information to the operator or provide a place for the operator to enter
information into the system.
Work @ % Elong — The percent elongation at which a secondary
work measurement is made for mm fibers.
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