# Tag Info

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So turns out, the problem did lie within the Schematic Symbol designing. I didn't realise when you attach pins, they have a 'direction'. I was placing the snap point of the pin towards the inside of the component rather than the outside during symbol designing, so this meant unless I was placing wire directly to the far end of my pin in the actual ...

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So I don't clearly understand is time of flight of signal relative to impedance of trace? It's not directly related. Characteristic impedance of a lossless line is given by $$Z_0 = \sqrt{\frac{L}{C}}$$ where $L$ and $C$ are the inductance and capacitance per unit length of line. Propagation velocity is given by $$v=\frac{1}{\sqrt{LC}}.$$ That ...

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As a starting point, in the schematic editor, click Project -> Compile document [your schematic document.SchDoc] Then in the bottom right hand corner click System -> Messages. This window should tell you about any errors in the schematic that could cause problems when moving across to the PCB. Make sure to snap to the same size grid when creating your ...

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I managed to achieve a hexagonal hatch by using a solid polygon pour, and a series of hexagonal polygon pour cutouts. Its not the quickest or most accurate, but without knowledge of scripting or some complicated import process, its the simplest way to do it. Start by drawing a hexagon with lines, (you may need to do some trigonometry to be accurate) then ...

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Create a polygon (place polygon plane) on whatever layer you like. Mechanical 1 is a good choice since it is often used by Gerber export as the board outline layer. The "Outline Vertices" shown in the object properties when it is selected will allow you to specify exact values. When done, select Design > Board Shape > Define from Selected Objects. (Tested in ...

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One thing that you can do is convert the track/primitive (in my case a drawing imported from .dwg) to keepout, that worked out form me: Select the objects then go to: Tools>Convert>Convert Selected Primitives to Keepouts

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Ran into the same problem myself just a few moments ago (this was an old design imported into version 19). Opening the layer stack manager for the 1st time caused my design to gain a sub-stack. It also was showing an error because both the stacks had the same name. I changed the name of the sub-stack and that fixed that error, but I still couldn't ...

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Bringing this up again because it is still a problem and I had to find a work around. I am using Altium 19 and had the same issues. I found that the best solution was to use the Find and Replace Text option, which is CTRL-H, then specify "Designators" as the identifier. (https://www.altium.com/documentation/altium-designer/sch-dlg-findandreplacetextfind-and-...

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Mostly yes. The vast majority of 16 pin DIPs have a 0.1 inch lead pitch and a 0.3 inch width (measured from the Center of one row of pins to the centre of the other row) You do see the occasional special component though, for example I have used some high isolation optocouplers, which came in a package that was like an 8 pin DIL but with a 0.4 inch width ...

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Almost yes but No. . Please check datasheet for each part. There will be slight differences which you will be able to accept or adjust.

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Figured it out! It turns out if you are using MySQL and have a space in the name of the Table then Altium bugs out and can't see the Library Ref column. This can be fixed by using MSSQL. Weird?? NOTE: This could be related to my version (19.0.15) but haven't found any bug reports of this.

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Press TAB while routing and it'll open the properties of the trace, then you can change it there. If your new width choice is outside your design rules it'll give you a pop up about that and then revert back to the previous width. If the latter is happening, then you need to change your design rules for the PCB.

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I had the some problem but now, I found the reason. You have to enable the "Online DRC" ( Preferences -> PCB Editor) Only with this option, it considers your Design-Rules.

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1- Go to Menu/Place/Arc/Arc(Edge), 2- Place an Arc close(but not necessarily accurate) to the desired dimensions, 3- While the arc is selected, On Properties panel, adjust all sizes including thickness, start angle, End Angle, Radius ,... 4- Go to Menu/Tools/Preferences/PCB Editor/General, 5- Change the Rotation Step to correct value. For example if your ...

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