Reference for PCB test fixture design?

DFT means design for test... sounds like it's too late for that.

DFT was used as much as possible. If you saw the images, you can see there were severe space limitations. DFT doesn't mean push back on the requirements and tell your customer you want to design something else loosing the job.

This design tests very easily. As I indicated a test fixture is used that the DUT is plugged into. Works the champ.

mandag den 19. juli 2021 kl. 08.22.37 UTC+2 skrev Spehro Pefhany:

we use some of these:

A quick touch with a Metcal stops the bleeding.

For a small board, maybe use one of the toggle pusher-down things that machinists use. Foam on that and some alignment posts below, into your registration holes.

Our test takes seconds, so we just push with a finger. If it fails, we throw it away.

You could push it down manually and slide in some things from the side to lock it down. Washers loose on spacers or something, or some fancy machined thing. That would leave the top accessable for probing.

mandag den 19. juli 2021 kl. 17.19.23 UTC+2 skrev snipped-for-privacy@highlandsniptechnology.com:

Cool. I just ordered some to play with.

Toggle Clamp. There are too many kinds.

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Those things are stupid cheap in China- like a dime, but nobody seems to have a great drawing or 3D model.

I've seen them with a bar screwed to two of the release levers so one side can be released at once.

Would be interested to know if they're useful