7-Pin DUB Cable
IIRC, the 7-Pin cable was called a Dub Cable in U-Ville, I don't think it is analogous to S-Video. S-Video is simply separated Y and C, with the C being at the broadcast standard frequency (3.58, 4.33). The U-Matic Dub signal was the RF directly off the heads (C @ 688KHz, or YC688) which allowed bypassing the up-down conversion steps of dubbing with composite.
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Mike Scott in SJ, CA Drive 'em to the XMAX!
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