It is becoming increasingly necessary to control these characteristics on high speed systems such as USB2.0 and LVDS. (Even mode impedance is defined as the characteristic impedance of one side of a transmission line pair when both lines are driven by a signal of equal magnitude and polarity). The new Si8000m also extracts even and common mode impedance.

This offers a much more elegant solution which can be tailored to the particular resist application method in use on your boards. Surface coating is often overlooked when modelling and the Si8000m models the resist thickness adjacent to above and between surface traces. Si8000m – comprehensive modeling of over 100 structures Link to PCB stackup Speedstack enhanced with Projects (Permits easy comparison of coated / non coated etc.) Projects option with Speedstack saves structure groups Import and chart logged impedance data from CITS Important information when updating from an early version The XFE option provides crosshatch return path modelling for flex and flex-rigid PCBs

The Si8000m links with Speedstack as Speedstack PCB. The Si8000m assumes negligible insertion loss in the transmission line should you wish to model insertion loss the Si9000e adds extensive insertion loss modeling capabilities The Si8000m adds enhanced modelling to predict the finished impedance of multiple dielectric PCB builds and also takes into account the local variations in dielectric constant on close spaced differential structures. The Si8000m is a boundary element method field solver that builds on the familiar easy to use user interface in earlier Polar impedance design systems.

View video – import and chart logged data from CITS Sitemap – for single and multiple dielectric PCBs

Pepakura Designer 5.0.Polarsi8000 simulated tools in PCB design layoutĬomparing measured with modeled impedance.

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