When differential pair routing is required, the differential pair needs to be created first and design rules are set.

Entry: Design - Differential Pair Manager

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Or in the left network tree - differential pair group, click the new icon of differential pair to create a new differential pair.

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Set the name of the check-up pair, and apply it after adding the positive and negative networks.

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You can also use the function of automatically generating differential pairs, which will be matched according to the network name with the same prefix but different suffixes

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Then, when routing the differential pair, select the net in the differential pair group to start differential pair routing. For differential pair routing, see the Differential Pair Routing section.