??Seven matters need attention PCB SD card Custom printed circuit board manufacturing
??1 note number and name is correct, and plate material including schematic diagram of the schmetic name, file name, principle of the lower right corner of the image documentation site. Schematic no pin connected to a fork. Before the network wire joint, delete later dropped network name still exists the network name, as the system number such as NET-XXX. At this time DRC will go wrong, will lead to completely remove, and a cross?circuit board manufacturing companies.
??2 to do board, the need to export files including GERBER files, panel drawings, pay attention to request to indicate the material requirements of plate.
??3 SD card, first of all to place files according to the actual demand. Place the documents to take coordinate positioning, in order to ensure that the least bit bad. Note the master and the FLASH can't close to the edge, at least for 0.5mm space, out of the consideration of production.
??4 export CAD files, with the suffix file to the project manager DXF, unit mm.
??The 5 wiring must first and clarify the relationship between each signal line, a main signal line for CLK and VSD, in general, the CLK signal line need to be surrounded by a wire or land.
??The 6 signal was observed in all the wiring copper, the land, as large as possible, signal line between the gap as small as possible, so that you can expand the land. The top and bottom are connected and reliable, in the upper and lower with the copper case, multiple played hole connected.
??7 for the test point, as far as possible to the test point to equilibrium distribution, spacing should be consistent, can be compared to a fixed.
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