EoW May 2010

technology news

New software options for measurement LaserLinc has introduced two new software options: Fast Fourier Transform (FFT) and Structural Return Loss (SRL). FFT allows users to analyse periodic deviations in a measurement, such as the diameter of a wire or cable. By combining the FFT information with specifications for line speed, the software can identify likely causes of the measurement deviation, such as a faulty pulley. Periodic fluctuations in wire and cable dimensions can cause significant signal loss, especially in high-frequency products such as network patch cables. By analysing periodic deviation, the software can compute the signal loss that will occur at various frequencies throughout a length of cable. Computing signal loss during a production run gives producers the opportunity to correct the problem before needing to scrap material. The SRL spectrograph shows a graphical representation of the signal loss that occurs at various transmission frequencies over the length of a product. An operator can quickly assess whether any portion of the cable is expected to show significant signal loss at one or more frequencies. The spectrograph display is cumulative, so it provides an excellent historical record of SRL information acquired over the entire run of a product. SRL is an option of the FFT package of particular interest to the wire and cable industry.

LaserLinc manufactures non-contact, laser and ultrasonic measurement systems, which operate via a standard Windows PC running Total Vu™ software, a proprietary system that provides in-process tolerance checking, trending, SPC, feedback control, data logging, and other features. FFT and SRL are options of the Total Vu package. From top left, clockwise: FFT chart showing periodic deviations at 49.92 Hz and harmonic frequencies; SRL chart ▲ ▲ showing peak signal loss at 12.5 GHz and harmonic frequencies; Spectrograph showing consistent signal loss of about –40dB at 12.5 GHz

LaserLinc Inc – USA Email : info@laserlinc.com

Fax : +1 937 318 2445

Website : www.laserlinc.com

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EuroWire – May 2010