你想在原理图中还是在PCB轨迹上绘制差分线？ 在原理图中，只是以通常的方式绘制线，但将它们路由在一起，并在文本中标记它们将作为差分对路由。 您还可以使用总线和总线输入工具将它们绘制为2线总线。 在PCB中，您可以并排或单独路由它们。 如何做，取决于您对差分阻抗，长度（传播时间）匹配和精确应用的要求。 差分线的PCB走线布局有很多误区和真相。 除非你有一个（穿过一个平面断裂与最小的EMC /信号完整性退化）或两个非常具体的原因，为差分线紧密相邻的痕迹铺设的痕迹，他们工作 - 以及更简单的布局 并且更容易定义作为单独轨道路由的受控阻抗。 Do you wish to draw a differential line in a schematic or as PCB tracks? In a schematic, just draw wires in the usual way but route them together and mark in Text that they are to be routed as a differential pair. You could also draw them as a 2 wire bus using the Bus and Bus Entry tools. In a PCB you can route them together side by side or separately. How you do it depends on what your requirements are for differential impedance, length (propagation time) matching and exact application. There is a lot of misunderstanding and half-truths about the layout of PCB traces for differential lines. Unless you have one (crossing a plane break with minimal EMC/Signal Integrity degradation) or maybe two very specific reasons to lay the traces for a differential line closely next to each other, they work just as well - and are much simpler to lay out and easier to define the controlled impedance for - routed as separate tracks.

@andyfierman easyeda里面是否有类似altium里面在PCB中绘制差分线的功能，具体该如何操作？

对不起，但在EasyEDA中没有创建差分线的特殊工具。 你必须手工设计和布线。 迹线宽度和间距取决于： 你的要求和 2. PCB结构 https://easyeda.com/Doc/Tutorial/PCBOrderFAQ#PCB-Stackup 但是这个： https://sourceforge.net/projects/mdtlc/ https://www.openhub.net/p/mdtlc 是一个非常好的自由和开源软件工具，以帮助您设计迹线宽度和间距的差分线在表面和埋地微带和不同类型的纹线结构。 您还可以使用它为单行指定跟踪wdths。 或者你可以使用不那么准确的工具，如： http://www.multek.se/engelska/engineering/pcb-structures-2/differential-microstrip-impedance-calculator-2 http://www.fedevel.com/welldoneblog/2011/08/pcb-impedance-calculator-single-ended-differential-pair/ https://www.eeweb.com/toolbox/microstrip-impedance Sorry but there are no special tools to create differential lines in EasyEDA. You have to design and route them out by hand. The trace widths and spacings depend on: 1. your requirements and 2. the PCB structure https://easyeda.com/Doc/Tutorial/PCBOrderFAQ#PCB-Stack-up but this: https://sourceforge.net/projects/mdtlc/ https://www.openhub.net/p/mdtlc is a very good Free and Open Source Software tool to help you design the trace widths and spacings for differential lines in surface and buried microstrip and different types of Stripline structure. You can also use it to specify trace wdths for single lines. Or you can use the less accurate tools such as these: http://www.multek.se/engelska/engineering/pcb-structures-2/differential-microstrip-impedance-calculator-2 http://www.fedevel.com/welldoneblog/2011/08/pcb-impedance-calculator-single-ended-differential-pair/ https://www.eeweb.com/toolbox/microstrip-impedance

@andyfierman 好的，我知道了，手工去画。 最后一个问题，easyeda后期是否会添加这方面的工具？ 因为我想把它推荐给我的朋友，但是这一点可能会让他觉得不方便。

@Lazyduck 差分线应该在3个月内提供，目前团队在开发桌面客户端，假如你乐意帮我们测试客户端，我们可以把测试版发到你注册邮件。

@dillon 好啊，最近两个小项目都是easyeda做的，用着还可以。

@dillon 能公布一下桌面端有哪些功能吗？ 比较期待

@Lazyduck 有不少新的功能，这周应该会发给你。

@dillon thanks

桌面版本是否可以发送给我测试也？大概什么时候发布桌面版本？

@gpfrank 说实话，我现在也没收到呢...