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 Post subject: ERC - increase short circuit test range
PostPosted: 01 Jul 2017, 05:41 
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Joined: 20 Jun 2015, 14:39
Posts: 939
The ERC checks for short circuits between power and ground pins only if a power/ground pin's name begins with one of the prefixes specified in the "Power Pins for SC" section located in the lower-right-hand corner of the Electrical Rules Setup dialog window. The default power pin prefix setting is "V*", which means that any power pin or power Netport whose name begins with "V" is tested as a power pin. The default ground pin prefix setting is "GND*", which means that any power pin or power Netport whose name begins with "GND" is tested as a ground pin. Any power pin or power NetPort whose name does not begin with either of these prefixes is not included in the "power pin to ground pin" short circuit test.

So if the name of a power NetPort begins with "V", then a connection made between it and a power NetPort whose name begins with "GND" would be caught and flagged. Unfortunately, the "Power:" and "Ground:" entry boxes will only accept one prefix and that limits the range of power pin short circuit checks. It would be helpful if the user could specify more than one prefix (e.g. V*, +*, -*) to test not only power pins and power NetPorts with names like "VCC", but other power pins and power NetPorts with names like "+5V", "-15V", etc.

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Tom


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