1. Impedance matching is not done for high-speed wiring; <br>2. Impedance matching calculation is incorrect; <br>3. Impedance matching requirements are not designed;
1. High-speed line did not do impedance matching;<br>2. The impedance matching calculation is wrong;<br>3. Not designed according to impedance matching requirements;
1. No impedance matching for high-speed wiring;<br>2. The calculation of impedance matching is wrong;<br>3. Not designed according to the impedance matching requirements;