PADS新手的一点心得和技巧
偶是PADS的新手,原来一直用protel。花了四天时间第一次用PADS2005画了一块大板子,开始确实有很多感觉不方便不熟悉的地方。现在算是入门了,也总结了一些经验和技巧。希望对PADS的新手能有所帮助。
1.布局时飞线(鼠线,connection)的处理。 Layout的缺省设置并不是让飞线最短化。一开始布元件时,飞线实在是密如蛛网,晕头转向。Tools\length minimization (CRTL+M) 也没有用,硬着头皮在缺省设置下完成了元件布局。几欲faint。后来才发现其实没有设置好。正确或者说方便的设置应该是让飞线最短并且在移动中始终最短。
Setup\design rules\default rules\routing\ topology type\minimize
这样在按CTRL+M,很多飞线就消失了,也就最短了
Setup\preference\length minimize\during moving
这样移动元件是飞线始终最短。
另外,很多飞线其实是地线。可以把地线的飞线先hide起来。并把地线的net设置成比较特殊的颜色。这样就布局就方便多了。
View\nets\ 选在左边net list 选GND net,加到右边view list。在右边选GND,下面view unroute details 选none, 在左边颜色中选一个颜色。
这样地线的飞线就hide起来了,并且是同一种颜色。当然这里要小心信号地和power地要分开先。
这样的设置布局起来就方便多了。早知道就好,ft。
2.改全部元件的字体属性。和protel一样,这个是可以一次全部改成相同的属性的。
单击鼠标右键,选select components, 再单击右键,选 select all (CTRL+A)。再单击右键,选query/modify (CTRL+Q), part outline width 输入想要的宽度,下面选label, 选Ref. Des. Press the big button under it. 弹出新窗口, input the value you want at size and width. Press OK. Then the size, width , even the part outline width are same. 有点麻烦。呵呵。
3.加过孔。开始我也以为PADS不能随便加via,必须要画trace,然后加了还一段在top另一段在bottom,很让人ft,因为这via实在是太常用了。对GND的via要能经常的加随意的加才好。其实这也可以。
单击老鼠右键,check “select net”, select the net you want to add via, usually, GND net, the GND is high light. Then right click mouse again, select “ add via”, then you can add vias which are connected to GND net. Freely and put them wherever you want. Remember, if the GND net is hide and set to a special color, no connection for these vias, but they are same color as other pads and trace in GND net.
4. 覆铜。覆铜应该是PADS的一大优点。快了很多。对于焊盘可以选择铜是盖过去(flood over)还是用对角(orthogonal, diagonal)连
接。对某一个形状的焊盘只能一种设置。如果有几个圆形焊盘希望铜铺过去,而几个相同的圆形焊盘想用梅花连接。那可以这
样。覆铜时preference\thermals\, select the pad and shape, check “ orthogonal” or “diagonal”, then all these shape pads are orthogonal or
diagonal connection to the copper. And then, put a copper (铜皮)to the pads you want the copper flood over,and assign the same net to the
copper. Then these pads are flooded over by the copper.好了,一个新手入门的一点心得,希望对你能有所帮助
大家好啊,我也是新手,大家能不能帮帮我啊
顶啊
顶
顶
顶
顶!
好啊,我顶!俺也是Power PCB新手,刚学3天!太需要了!
“
2.改全部元件的字体属性。和protel一样,这个是可以一次全部改成相同的属性的。
单击鼠标右键,选select components, 再单击右键,选 select all (CTRL+A)。再单击右键,选query/modify (CTRL+Q), part outline width 输入想要的宽度,下面选label, 选Ref. Des. Press the big button under it. 弹出新窗口, input the value you want at size and width. Press OK. Then the size, width , even the part outline width are same. 有点麻烦。呵呵。”
这样就简单多了:select documention, then filter, only select label, close the filter menu, select all, CTRL+Q, input the value is ok.
Nice...thanks, it is better and faster way to do it
I got this from Mentor Graphic technical support. your method is better. thanks a lot
以下是引用shanqingxuan在2006-1-18 11:05:00的发言:
“
2.改全部元件的字体属性。和protel一样,这个是可以一次全部改成相同的属性的。
单击鼠标右键,选select components, 再单击右键,选 select all (CTRL+A)。再单击右键,选query/modify (CTRL+Q), part outline width 输入想要的宽度,下面选label, 选Ref. Des. Press the big button under it. 弹出新窗口, input the value you want at size and width. Press OK. Then the size, width , even the part outline width are same. 有点麻烦。呵呵。”
这样就简单多了:select documention, then filter, only select label, close the filter menu, select all, CTRL+Q, input the value is ok.
l
up
+u!
我是新手呀,这对我太需要了,谢谢了。
好帖
我是新手,太需要了!
好帖,顶顶
好帖
好
小编总结得很好呀~~!
向小编学习~~
学习软件的高手,四天就能懂这么多,佩服啊!
tks
up
新手 学习
又学了几招,谢谢
我刚搞PADS ,要多学习
写的不错 顶下子
lz能否介绍一下如何用鼠标控制走线啊?
佩服,樓主辛苦了!
xiexie !3q
3.加过孔。开始我也以为PADS不能随便加via,必须要画trace,然后加了还一段在top另一段在bottom,很让人ft,因为这via实在是太常用了。对GND的via要能经常的加随意的加才好。其实这也可以。
单击老鼠右键,check “select net”, select the net you want to add via, usually, GND net, the GND is high light. Then right click mouse again, select “ add via”, then you can add vias which are connected to GND net. Freely and put them wherever you want. Remember, if the GND net is hide and set to a special color, no connection for these vias, but they are same color as other pads and trace in GND net.
可是我用这种方法加了过孔,就怎么删不掉了,请问是不是要在哪设置的?汗
Thank you very much!
There are some good advices for me who are a freshman too! Thanks again!