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Altera_Forum's avatar
Altera_Forum
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17 years ago

capacitance testing with fpga and/or Nios

I have a project to make a capacitance tester for many (500) small coax wires. Range up to 1000pf. I'm wondering if a nios and fpga are a possible solution.
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

If you are intending a rough good/bad test, it may be sufficient to measure the discharge time of a RC circuit connected to a single bidirectional pin. Accuracy is mainly limited by input threshold uncertainty.