Here are some of the key terms that you need to know.
Net: An entire string of points or connections from the first source point to the last point including component lands and vias.
Net list: A list of alpha-numeric locations that are used to describe a group of two or more points that are electrically common.
Shorts Test: Check to make sure that NO current flows between separate nets by measuring the amount resistance between them.
Opens Test: Check to make sure there is current flow from one “node” to the next for every net on the board.
100% Net List Test: Check of every “node” on every net on the board.
Optimized Net List Test: Check every “end of net” for all nets on the board and selected intermediate nodes on the board.
IPC provides guidelines on how bare circuit boards should be tested.
Here is a copy of the guideline.
“IPC- 9252 Guidelines and Requirements for Electrical Testing of Unpopulated Printed Boards”
“Section 4.4 States: One hundred percent continuity and isolation electrical test is the confirmation that the actual electrical interconnect of conductive nodes matches a proven reference source, including but not limited to CAD/CAM digital data, master pattern artwork, or released drawings.”
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