0:00 A brief description of Test Points.
1:35 How to create a Test point Symbol in Altium 21.
6:05 How to create a Test point Footprint in Altium 21.
9:30 How to add extruded 3d body to Test point Footprint in Altium 21.
13:22 How to add Integrate Test point Symbol & Footprint in Altium 21.
14:45 Placing a Test point on Schematic and Importing it to PCB Layout.
What is a PCB Test Point?
Very simply, a PCB #test #point is an electrical pad or via that can be probed during an ICT. These points are used to monitor voltage, current, and/or signal behavior in specific circuits. They can also be used to inject signals into a circuit. A pad on an existing component or a specific via in an existing layout can be assigned as a test point. The other option is to create custom test points in your #schemati and import them into your layout. This is a good idea if you suspect a component pad will not be accessible with a probe after assembly, or if you want to keep track of your test points directly in your schematic.
Typical pad or via #test #points are not ideal for all circuits and devices, as they might distort signal behavior at extremely high edge rates and frequencies. If you place a custom pad as a test point, it takes up a small amount of space in the layout. However, they are still useful for a variety of measurements. If you are working in the very high speed/high-frequency realm and you need to gather accurate signal behavior measurements on interconnects, you should use some validation structures on a prototype board or test coupon.
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