What does in-process FFT Spectrum Analysis and SRL Prediction mean?
The transmission characteristics of data and RF cables are most thoroughly described by the cable‘s structural return loss (SRL). Typically, SRL is measured as a function of cable operating frequencies at the finished cable. With respect to SRL drop-outs, periodic cable parameter fluctuations are most critical. In the extrusion process, such variations might result from extruder “pumping”, imbalances of rotating parts, periodic line speed fluctuations, cyclic fluctuations in the foaming process, or periodic conductor pre-heating non-uniformities. Designed for quality control of (foam insulated) coaxial cables as well as data cables (CAT5, CAT6, CAT7) the new SIKORA devices offer in-process FFT spectrum analysis and SRL prediction to detect these unwanted effects. SIKORA’s all digital FFT analysis and prediction of the Structural Return Loss SRL is calculated directly inside the following gauge heads: • LASER Series 2000 dual and triple axis diameter and ovality gauge heads • CAPACITANC
