I am doing my 1st PCB entirely !
I have confusions here regarding the ref. des. of components and How to show them on PCB.
-When I place the component on my PCB design, the Ref des. comes along with it. but that is in Ref. des. --> Assembly Top (class subclass), that doesn't show anything on PCB I guess when It comes in physical form. Also, I can't see them in 3D model view either in Assembly Top or Silkscreen Top layer when all layers are off.
-Also, when I add the text with ref des. written in it and put it in Manufacturer--> Autosilk_top (class subclass) layer, then it shows in silkscreen layer. but not in 3D model view. it will take me too long to add all ref des manually by text and then add it to the Autosilk_top one by one.
What should I do here ?? any simple way to do this? I just want to show up the designators on the top. !
additionally, please let me know the difference between --> Autosilk_top, Assembly_top and Silkscreen_top in PCB (as well in ORCAD) :) Thanks in advance!
My turn on this one- Obviously, the tool allows for some flexibility when it come to where you park your graphics. So, to add to what has been mentioned so far. An asterisk (*) is all you need for the ref designations. Placed them on the "Component Ref Des" subclass layer. Items of your choice (Silkscreen top, Assembly top) etc. When placing the *'s within your symbols note the text size and text justification. I prefer center justify. So when the true ref designations shows up via netlisting the ref desinations will still be in their same place with the correct size. Just stretched out due to the number of characters within your ref designations. And of course, make sure your Gerber output files contain these layers as well. Oh one other note. Auto silk needs enhancements in my opinion to achieve the results I expect. Especially if your boards are cramped full of very small SMD's Cheers