+mytek Posted August 21, 2020 Share Posted August 21, 2020 (edited) I thought I'd post this in it's own topic so that it is easily found with a search. So I bought one of Lotharek's HQ (High Quality) Video Cables a short while back (LINK). I was really excited, thinking when I first saw this on Lotharek's site: "That looks to be a very nice high quality cable, better than anything I've ever seen produced for the A8". Unfortunately that feeling of goodness quickly faded when I connected it between my 576NUC+ prototype and an S-Video Panasonic LCD monitor. I ended up seeing the worse case of jail bars in my entire Atari history. So to rule out the 576NUC+ prototype as the cause, next I went on to test it with a 600XL that had a UAV installed - got the same exact result! Finally I tossed the Lotharek video cable aside and grabbed a DIY one that worked perfectly - jail bars were completely gone. -------- Now a few weeks later I decided to investigate and disassembled the DIN plug end of the Lotharek video cable. Here's what I found... Notice that there isn't even a single shield in that cable, although there are individual wires coming from the ground side of the various connectors. And even with each of those ground wires connected to the common ground point of the DIN plug, that gives you pretty much zero shielding between each signal as well as the outside world. So this means that the individual video signals will cross-talk, thus injecting chroma into the luma and rendering the jail bars that were seen. A proper video cable should have individually shielded (coax) cables for each video (Luma, Chroma, CVBS) and audio signal, as seen below. Schematic: Proper Video Cable with S-Video, Composite, and Audio Connections Although I had high hopes, and I really loved how the cable looked from the outside, sorry to say I really can't recommend purchase of the HQ Video Cable from Lotharek. Edited August 21, 2020 by mytek Corrected pin numbers on DIN-5 plug 1 7 1 Quote Link to comment Share on other sites More sharing options...
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