• 24.2 绘制原理图


      File>New>Project>PCB Project对工程保存后

      在File>New>Schematic新建原理图

      在File>New>PCB新建PCB

    设置交点:

      DXP>Preferences>Schematic>Auto Junctions>Size

      ×意思是不进行规则检查

      隐藏所有元器件名称:右键>Find Similar Objects

    生成PCB

      先对原理图标号:Tools>annotate schmatics>Update Changes List>OK>Accept Changes>Validate Changes>Execute Changes

      选择Design>Update PCB Document xxx.PcbDoc

      点击Excute Changes

    改变PCB板大小:

      在Mechanical1设置原点Edit>Origin>SET然后画4000×4000的方框>Design>Board Shape>Define from selected objects

    布线:

      横平竖直:Top layer顶层平行走线;Bottom layer底层竖直走线,线越短越粗越好。

    设计规则:

      在*.PcbDoc中,设计布线规则,Design>Rule>

      1.clearance线与过孔的距离>改大一点20mil(线在两个焊盘之间过不来可修改此数值)

      2.Routing>Width>Min Width:10mil>Max 50mil>Apply

      3.Routing Via Style>RoutingVias设置过孔大小

      4.Manufacturing>SilkscreenOverComponentPads>0mil

      5.Manufacturing>SilkToSilkClerance>0mil

      6.Placement>Height>修改大小

      在Top layer先画部分线再画过孔后切换到底层bottom layer

      画完所有信号线后,修改线宽画VCC和GND,Routing>Width>Perferred Width:40mil>Apply或连接是按Tab设置线宽为40mil

      Ctrl可以对线进行拖拽

    铺铜:

      Place>Ploygon Pour>Hatched(Tracks/Arcs)适用于只支持Protel的工厂,设置Track Width=Grid Size=10mil则可以将板子铺满>Net Options>Connect Net:GND>Pour Over All  Same Net Objects>Layer(把底线和铜熔在一起)>Top Layer或Bottom Layer

    规则检查:

      Tools>Design Rule Check

      Manufacturing> HoleSize>1000mil孔的直径改大即可

    导出文件:

      File>PCB 4.0Binary Files(Protel支持此格式)

    书写版权:

      在丝印层TopOverlay插入字串,Protel只识别stroke字体

    Error Collection

    Processing Rule : Net Antennae (Tolerance=0mil) (All)
    
    Processing Rule : Silk to Silk (Clearance=0mil) (All),(All);修改元器件之间的距离
    
    Processing Rule : Silkscreen Over Component Pads (Clearance=0mil) (All),(All);将顶层丝印与焊盘间的距离改小
    
    Processing Rule : Minimum Solder Mask Sliver (Gap=0mil) (All),(All)
    
    Processing Rule : Hole To Hole Clearance (Gap=10mil) (All),(All)
    
    Processing Rule : Hole Size Constraint (Min=1mil) (Max=100mil) (All)
    
    Processing Rule:HeightConstraint(Min=0mil)(Max=1000mil)(Prefered=500mil) (All)
    
    Processing Rule : Width Constraint (Min=10mil) (Max=50mil) (Preferred=10mil) (All)
    
    Processing Rule : Power Plane Connect Rule(Relief Connect )(Expansion=20mil) (Conductor Width=10mil) (Air Gap=10mil) (Entries=4) (All)
    
    Processing Rule : Clearance Constraint (Gap=0mil) (All),(All)
    
    Processing Rule : Un-Routed Net Constraint ( (All) )
    
    Processing Rule : Short-Circuit Constraint (Allowed=No) (All),(All);有未连接的元器件。

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  • 原文地址:https://www.cnblogs.com/baixu/p/10499847.html
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