The present invention in a configuration for performing differential signal transmitted using four or more even number of coaxial wires, variations in the skew in the cable longitudinal direction to provide a reduced differential transmission for a multi-core cable.
A differential transmission for multi-core cable 1, to even innate of four or more coaxial wires. Sectional area of the conductor of the coaxial wire 20a~20d is a ^0.40mm 2 ~0.004mm 2, a pair of coaxial wires 20a~20d performing differential signal transmission, material and dimensions are the same as each other. Twisting pitch of the coaxial wire 20a~20d is not less than 15 times the set outer diameter of the coaxial wire 20a~30d which is set by the differential transmission for a multi-core cable within 1, a pair of coaxial wires for performing differential signal transmission 20a~20d is set to be polygonal diagonal position when connecting the centers of four or more even number of coaxial wires 20a~20d in a straight line.
.FIELD 1A