{"id":328,"date":"2012-03-15T07:55:55","date_gmt":"2012-03-15T14:55:55","guid":{"rendered":"https:\/\/blogs.mentor.com\/jimmartens\/?p=328"},"modified":"2026-03-27T09:18:35","modified_gmt":"2026-03-27T13:18:35","slug":"pads-tips-tricks-differential-pairs","status":"publish","type":"post","link":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/2012\/03\/15\/pads-tips-tricks-differential-pairs\/","title":{"rendered":"PADS Tips and Tricks: Differential Pairs"},"content":{"rendered":"

Today\u2019s tip is from Bill Tkachuk in CSD.\u00a0 It\u2019s a great way to speed the definition and rule assignment for differential pairs.\u00a0 Give it a try and add any comments for tips you may have for working with diff pairs.<\/p>\n

Defining \u00a0Differential Pairs within PADS Router<\/strong><\/p>\n

Using PADS Router, you can define your Diff Pairs and assign the same rule set to multiple Diff Pairs at once.\u00a0 Using a trick with the Project Explorer you can define the Diff Pairs much more quickly than is possible in PADS Layout.\u00a0 Please follow the steps below:<\/p>\n

    \n
  1. Open PADS Router and load your design file.<\/li>\n
  2. Make sure your Project Explorer window is open. Go to View > Project Explorer to toggle it on\/off.<\/li>\n
  3. Right mouse click in the Project Explorer window and choose Vertical Split. Two identical instances of the Project Explorer will appear<\/li>\n
  4. Expand the widow by dragging the right edge of the window to the right.<\/li>\n
  5. Drag the window split to the right as well so there are two equal column widths.<\/li>\n
  6. In the first column expand Net Objects and expand Nets.<\/li>\n
  7. In the second column expand only Net Objects.<\/li>\n
  8. Ctrl+select the two nets of the first Diff Pair\u00a0in the left column.<\/li>\n
  9. Release the Ctrl key.<\/li>\n
  10. Click the left mouse on the selected nets in the Project Explorer, do not release the mouse button, drag your mouse over the \u201cDifferential Pairs\u201d text in the <\/em><\/strong>right column and release the mouse button.<\/li>\n
  11. A plus sign should now appear next to the Differential Pairs, expand it to see the Diff Pair that was just created.<\/li>\n
  12. Repeat this process to define more Diff Pairs. Be sure to continue dragging the mouse onto the “Differential Pairs” text to create more.<\/li>\n
  13. Ctrl+Select or Shift+Select multiple Differential pairs once they are created, right mouse click and choose Properties.\u00a0 You can revise the rules for all of the selected Diff pairs at once.<\/li>\n<\/ol>\n

     <\/p>\n

    Note: Creating and routing Differential Pairs in PADS Router requires the Advanced Rules Set option and either the High-Speed Routing (Manual) or High-Speed Routing (Auto) options.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Today\u2019s tip is from Bill Tkachuk in CSD.\u00a0 It\u2019s a great way to speed the definition and rule assignment for…<\/p>\n","protected":false},"author":16541,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spanish_translation":"","french_translation":"","german_translation":"","italian_translation":"","polish_translation":"","japanese_translation":"","chinese_translation":"","footnotes":""},"categories":[13],"tags":[],"industry":[],"product":[],"coauthors":[],"class_list":["post-328","post","type-post","status-publish","format-standard","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/posts\/328","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/users\/16541"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/comments?post=328"}],"version-history":[{"count":1,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/posts\/328\/revisions"}],"predecessor-version":[{"id":10319,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/posts\/328\/revisions\/10319"}],"wp:attachment":[{"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/media?parent=328"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/categories?post=328"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/tags?post=328"},{"taxonomy":"industry","embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/industry?post=328"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/product?post=328"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/coauthors?post=328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}