The SI6000A is a PC-based design tool for simulating and analyzing impedance characteristics in more than 35 different single-ended, differential and coplanar printed circuit board structures. Graphics are presented in an Excel interface and board parameters can be keyed or imported from another spreadsheet. Data can be calculated and displayed as a graph of impedance against any selected parameter. Price is $7,000. A free demo is available on the company's website.
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