Electronics > Altium Designer

Fiducial Marks

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PsychedelicBreakfast:
Hello all,

I'm looking to put some fiducial marks on my PCB but I'm completely lost on how to do this. My initial attempt was to create a pad that was limited to the top layer only and surround it with a circular keep-out zone. But I'm not so sure if this is the correct way.

Would someone here be kind enough to provide a few instructions on how create fiduicial marks in Altium? I've searched online for quite some time.

Rufus:

--- Quote from: PsychedelicBreakfast on March 24, 2012, 03:36:34 pm ---Would someone here be kind enough to provide a few instructions on how create fiduicial marks in Altium? I've searched online for quite some time.

--- End quote ---

A 1mm round top layer pad with large -ve paste mask expansion and about 0.5mm solder mask expansion has worked for me.

You don't really need a keepout although it would enforce clearance from tracks and polygon pours. If you want it place a 1mm radius arc around the pad on the top layer and set it as keepout in its properties.

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