Create Schematic From Reverse Engineering Printed Circuit Board

We can now create the schematic from reverse engineering printed circuit board. This consists of placing
symbols that represent the individual components in the printed circuit board and connecting their individual connections, or nodes, to one another.

In the middle is the design window where we actually create our systems. You’ll notice in the left panel three windows. The upper window shows what Schematic Libraries you currently have open, and the middle window shows individual components in the library selected from that list. If instead you see a list of files in your design database,
then click the BrowseSch Tab, and set the pulldown menu to Libraries.
Usually, the only open Library will be Miscellaneous. We will start by using some of its components through Reverse Engineering Printed Circuit Board. Select CON4 from the middle window by double clicking it, and then move the pointer to the design window – you will see the outline of the component. Pressing the
SPACE BAR will rotate the symbol. Pressing TAB will allow you modify the Properties of the Device.
In this case, we go to the Properties, Select the Graphical
Attributes Tab, and Click Mirrored – this will reverse the symbol about the y-axis. Click once to place the component on the left side of the sheet, about half way down.
Select Place/Wire. Move the Pointer on the end point of pin 1 on the connector. A Black Circle should appear, indicating that a connection between the wire and a node on the component can be placed. Click to start the wire. Move the cursor about 6 squares, and then click again.
This will lock the wire segment and allow you to keep extending the wire in other directions. In this case, we press ESC to end the wire. Do the same for pins 2, 3 and 4.
Select Place/Net Label and move back to the Design Window. A Box Outline should appear.
Press TAB to go to properties, and enter IN1 for a Net Name, and close. Move the box right above the first wire so that the black circle shows up and click. Move down one row and click on the second node. It should automatically increment and place IN2. Do the same for the other two nodes.
Net Labels will allow you to connect separate nodes on the page without actually laying a wire between them.