_抄板秘笈（_ copy board tips）.docVIP

_抄板秘笈（_ copy board tips） This may be related to the following points: 1, the resolution of the image scanning, general resolution in 150*150~300*300, set too high not what significance! And the impact velocity of the plate is redrawn. Beyond the specified range, the display is incomplete! 2, scanning black and white threshold setting is not good, the conversion will be incomplete. Sometimes the image is reversed and the border appears. This is going to be reversed using Photoshop. Remember: when converting, images must be 2 bit BMP images. 3. The line definition of the scanned plate. This has the greatest impact. Youll think it doesnt matter if the boards are printed too much! I scan now, not dismantling components, as can copy than the original board is ok! Of course, the multi-storey is to be dismantled! When overlapped, more than two positioning marks are placed on the original board, and then converted. Remember, the markings on each floor should be consistent. You can use the mounting holes of the plate as marking holes. Change the two layer to different colors, and remember that one layer has to reverse the image. You can use S, A, M, M, X, ESC, X, A. The two plates are then stacked together with a positioning mark. Special attention: after conversion, the size of the two boards should be the same, otherwise, the stack is useless! Double deck to be very accurate, take a lot of time, but also to be patient, careful, can make perfect!! First put correct overlap, overlapping components, all components to draw lines, draw a line when a layer of paint quickly, dont mix with painting. Painting can turn off the bottom top off the bottom of the map, map painting at the top floor, the top of the bottom paint removing map, then drawing on their own modify!! so you can get a perfect copy board! First, the scanned image is converted into PCB by bmp2pcb software, and the boundary size of the plate is measured at Protel. The size is calculated and the ratio of the actual si