Most modern commercial PCB design softwares have capability to set length matching or flight time matching ability inside the software. The software will flag a DRC error if the matching rule is violated. The software requires you to create a group of signal or create a matching pair and mention the allowed length or time mismatch. If the PCB design software provides these features we must avail of the opportunity. The advantage of this method is that we need to work only one time to define the constraints. If there is a change in the routing, we just need to run the DRC (Design Rule Check).
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