| 摘要 |
According to one embodiment, a printed circuit board includes a coupon portion having, for each of a plurality of signal layers, an impedance guarantee coupon as a reference for the layer, and a product portion having, in at least one of the plurality of signal layers, a transmission line requiring impedance guarantee having an impedance decision factor different from the coupon formed in the coupon portion, wherein an impedance of the transmission line is guaranteed on the basis of a known impedance decision factor of the transmission line and a measured value of the coupon.
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