Lab 9-2: Other Shape Functions (optional)

October 2, 2018 admin No comments exist

Important!! Do not save the results of any of these sections

1. Left-click Visibility and left-click the “All” for the GND1 layer for this section.

Inline voids

1. Zoom into the area around the through-hole dip package symbol, U2, on the board. (24-pin DIP)

2. Choose Shape>Global Dynamic Parameters from the top menu.

3. In the Void Controls tab, set the Create Pin Voids option to In-Line.

4. Change the Distance between pins to 2.54 mm apart.

5. Left-click>Apply to apply the new settings.

Notice that the pins on the dip have a single void for all the pads, instead of individual voids.

6. Change the Create pin voids back to Individually and left-click>Apply.

7. Left-click>OK to close the form.

Manual voids

1. Select Shape>Manual Isolation / Cavity>Polygon.

The command line says, “Pick shape or void to edit

2. Select the shape in the canvas.

3. Define the outline of the void by left-clicking to add the corners.

4. Once the corners of the void have been defined, right-click>Done.

Note that the void boundary will always be joined to the first point clicked so there is no need to select it to complete the void boundary.

5. Experiment with the Shape>Manual Isolation>Rectangle and Shape>Manual Isolation / Cavity>Circular commands to remove copper from additional areas.

6. Select Setup>Colors. In that form, under the Areas folder, turn OFF any of the Keepin or Keepout classes so as not to edit them while performing the next step.

7. Experiment with the Shape>Edit Boundary command to change the outline of the copper area. While in this command, start at the edge of a shape and draw a new boundary. When done, only the newly drawn boundary should remain.

8. Examine the results.

Split Copper Areas

1. Select Setup>Colors from the top menu.

2. Left-Click on Off for Global Visibility.

3. Go to the Stackup folder and turn on All for the GND1 layer

4. Left-Click>OK to close the form.

5. Pan / zoom the board so that the area around the two circular 8-pin through hole
components is in view, similar to the following illustration.

6. Select Shape>Rectangular from the main menu.

7. Left-click>Options tab and set the Class to ETCH and the Subclass to GND1. Set the Shape Fill to Dynamic Crosshatch in the drop-down. Use the “” in the Assign Net Name group to browse the netlist, enter “V” to form “V*” at the top of the form and press tab to filter the netlist, select the V+12 net and left-click>OK to close the net selection form.

8. Move the mouse on the canvas, left-click to start the rectangle and move the mouse to draw the rectangle. (Approximately around the to two circular 8-pin through hole components, similar to the illustration.)

9. Right-click>Done to complete adding the shape.

The shape will be added with the default 0.127mm x 0.127mm orthogonal cross hatch.

The defaults can be overridden by changing with the parameters.

10. Select Shape>Select Shape or Isolation / Cavity from the top menu.

11. Left-click on the shape just added to select it.

12. With the shape selected, right-click>Parameters from the menu.

13. The Dynamic Shape Instance Parameters form will be displayed, set the form to the setting in the next illustration: Diag_Both, 0.25mm, 0.5mm for both Hatch sets and press left-click>OK

13. Observe that the cross-hatched pattern is applied to the Shape.

(The edges of the Shape won’t be rounded if the “In Line” is still set for Pin Voids. This was set globally. earlier in this lab but the “In Line” can be changed for just this Shape by selecting the Shape and using right-click>Parameters, Void Controls tab)

14. Right-click>Done to end the command.

Changing Pin Thermal Connections

1. Zoom into the top of the 24-pin through hole component (U2):

2. Move the mouse over one of the pins that has thermal “spokes” to the shape, the pin will highlight. (If the pin does not highlight, check the Find Filter has only Pins on and that the Super Filter is Off)

3. With the pin highlighted, right-click>Property Edit.

The Edit Property form will open with the available Pin Properties listed. The properties that affect dynamic shapes begin “Dyn_”. For this exercise, the Contact Type is going to be changed, just for the specified pin.

4. In the Property Edit list, find the Dyn_Thermal_Con_Type and left-click on it, the property will be transferred to the right hand side of the form.

5. Left-click>Assign to open the layers to assign the property to.

6. Left-click in the drop-down for Cdn_All and select Full_contact.

(This will assign the property for “all” routing layers and is the same behaviour as previous releases. If required, different Thermal settings can be set by pre-set group or named routing layer)

7. Left-click>OK to close the assignment form and left-click>OK again to close the Property Edit form and apply the changes.

Observe that the pin is now Full Contact, similar the illustration above.

(You may have selected a different pin!)



End of Lab

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