@PCB Engineer, here are some practical tips for Allegro drawing board
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As a PCB engineer, drawing a board is a necessary skill. How to become a real board drawing expert? Both experience and skills are essential. Next, Banermei will share with you some practical board drawing tips of Allegro.
Allegro chamfer function
When drawing the board frame, I drew a rectangle with four right angles, which is easy to cut my hand. Can I change the four right angles into rounded corners with one click? The answer is of course yes.
1) Menu manufacture-->drafting->fillet
2) Modify the corner radius in the OPTION properties on the right
3) Then add a dot to each of the two sides of the right angle. That's it, the right angle has become a rounded angle.
Rename component number
1) Logic-->Auto Rename Refdes-->Rename-->A dialog box pops up, select Use default grid and Rename all
2) components-->Click more, OK-->Click rename to rename
Modify text size
1) Setup-->design parameter-->Click Setup text sizes in the text tab, modify the line width [common values 20, 25, 30, 6, 3]
2) Edit-->change, select only Text on the find page of the control panel; on the options page, set class to Ref Des, New subclass to Assembly_Top, check the Text block column to select the font size à Select the entire PCB board, all fonts are highlighted-->right-click done
Module reuse
1) First place a module, select menu Setup-->Application Mode-->Placement Edit-->Select the laid out components
2) Right-click one of the components, select Place Replicate Create-->right-click and select Done, then click again, a dialog box pops up, name and save [module creation completed]
3) Finally, select the components that have not been laid out, right-click one of them, select Place Replicate Apply and the module you just named à In the pop-up dialog box, cancel the Device Name and Value options, click the list in Seed Circuit->Match in turn à Click Ok, then click once to place
the module Rotate
Edit-->Move Select User Pick in the point item in the option tab, check symbol in the find tab-->right-click Rotate-->done
Allegro primary color transparency settings
display->colour/visibility->display->OpenGL->Global transparency->transparent
Individual through-hole pins are set to full copper connection
Edit-->Propertice-->Check Pins in the find tab-->Click the pin that needs to be fully copper-clad, click Dyn_Thernal_Con_Type in Available Properties, and then select Full_Contac in the Value on the right-->Apply
differential line resistance (the differential pair created is Xnet)
1) Click the Signal Model icon-->Click OK,-->The resistor that needs to be modeled is highlighted, and then click Create Model-->Ok,Ok-->The resistor model is created successfully
2) In Constraint-->Electrical-->Net-->Routing-->Differential Pair-->Create a differential pair [Also set it in Physical]-->Then connect it
(The article is compiled from: "The Evolution of a Rookie" CSDN blog, Wolonghui IT technology, network)
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