YARN ANALYSIS TEST (YAS) Yarn Diameter Uniformity is an important quality control parameter. CTT-E Yarn Analysis Test (YAS) Provides yarn uniformity information, using the diameter data as measured by Camera Module. YAS software features include: • Measures every 0.5mm of yarn with 3.5micron precision • Classification of yarn defects by diameter and length • Ability to view the yarn defects on simulated blackboard and taperboard • Ability to view the yarn profile • Ability to export the yarn diameter for further analysis