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 Post subject: TTL Csync or 75 ohms Csync?
PostPosted: Tue Jun 11, 2019 2:27 pm 



Joined: 09 Jun 2018
Posts: 13
Good morning everyone, I'm thinking of using an RGB bypass board in my SNES and I ended up finding two options, TTL Csync and 75 ohms Csync, if in case I choose the TTL I must use a cable with a resistance of 470 ohms, and 75 ohms Csync direct link. Someone would know to tell me what would be the best option, and if there is any advantage in using one of them? or will the end result be the same in both cases?


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 Post subject: Re: TTL Csync or 75 ohms Csync?
PostPosted: Tue Jun 11, 2019 3:14 pm 



Joined: 19 Jul 2017
Posts: 1497
I would recommend configuring your bypass for 5Vp-p composite sync. That's what the console normally outputs, so you'd be able to use an off-the-shelf SNES RGB SCART cable, and, if you have a need to go into something like an Extron device (RGB interface, CrossPoint), you can use a custom, componentless DE-15 or BNC cable without having to boost typical consumer-grade 1Vp-p composite sync to TTL.

The only use case I can think of for having the bypass output 1Vp-p composite sync is if you somehow have a componentless SNES SCART cable, which I think is an atypical configuration.


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