UMSA vs VGA to Scart cable for NTSC TV?

[vrada501]

I apologize for a question as stupid and noobish as this, but I'd rather be a safe than not.

I'm from the US and am working on a computer to CRT TV 15khz set up to use with CRT_emudriver etc while being new to it.

I was gonna get and connect VGA to UMSA to Scart and one of those Scart to Component transcoders on amazon and ebay then component to tv.
Also I have a 3.5 to white and red AV cord that I should be able to use for audio through the TV.

So the question was: I saw a VGA to Scart cord with a Molex connector on Ebay from a Spanish seller named Arcadian8bits. And I think one from another seller too.
I just wanted to make 100 percent sure...Even if these cables come from Europe will they work fine with NTSC/American TV's with software like crt_emudriver, or more specifically in my case, through the Transcoder then into the TV?
http://www.ebay.com/itm/141663388712?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

I already know for sure the UMSA works with NTSC TV's because of those who have done it. But if this cable would work just as fine for me, I may get that instead of the UMSA since I think it maybe slightly cheaper.

Thank you for your time.

[Calamity]

What you need to know about those cables is how H & V sync signals are combined. SCART needs composite sync. You need a little electronic circuit inside one of the cable ends in order to mix both sync signals properly. Email the seller and ask him how sync is managed. If both cables are just wired together, I wouldn't bother.

[haynor666]

In theory wiring H and V sync should work: http://digilander.libero.it/venturi1975/index.html

[dmckean]

Why bother with SCART at all if you're not is Europe? Isn't a VGA to arcade CGA adapter plus this JROK board a better solution?

http://jrok.com/hardware/RGBv4/index.html

[Calamity]

Why bother with SCART at all if you're not is Europe? Isn't a VGA to arcade CGA adapter plus this JROK board a better solution?

http://jrok.com/hardware/RGBv4/index.html

Sure, the RGB->Component board would do the job. However, it still seems to take c-sync only as input, so that should be sorted out.

[MtothaJ]

What you need to know about those cables is how H & V sync signals are combined. SCART needs composite sync. You need a little electronic circuit inside one of the cable ends in order to mix both sync signals properly. Email the seller and ask him how sync is managed. If both cables are just wired together, I wouldn't bother.

I have this cable and it works fine. Sync is combined by connecing hsync and vsync each through a 1kohm resistor to scart pin 20.

[vrada501]

Thank you very much for the helpful replies. It helps a lot.

This brings up one more little question, then I should be done. Lets say I were to go the UMSA route, and I'm picking out a male to male Scart cable, do I still have to worry about
it's wiring and which kind of sync that it has? I read on a forum where an NTSC TV user did this set up and all he said about the male to male Scart cable was that his was "Generic, fully wired and well shielded" and the set up worked fine. So from that, I get the impression in a set up with the UMSA and my NTSC TV I could get any cheap cable like the ones on Ebay that are around 2-6 dollars most of which are mostly from Europe and some from China (though I imagine a cheap quality one would just give me minor issues like  a little interference or jumping, but that wouldn't be too much of a biggie to me). More especially if it says to be "Fully wired" which some of the results do.

[MtothaJ]

Thank you very much for the helpful replies. It helps a lot.

This brings up one more little question, then I should be done. Lets say I were to go the UMSA route, and I'm picking out a male to male Scart cable, do I still have to worry about
it's wiring and which kind of sync that it has? I read on a forum where an NTSC TV user did this set up and all he said about the male to male Scart cable was that his was "Generic, fully wired and well shielded" and the set up worked fine. So from that, I get the impression in a set up with the UMSA and my NTSC TV I could get any cheap cable like the ones on Ebay that are around 2-6 dollars most of which are mostly from Europe and some from China (though I imagine a cheap quality one would just give me minor issues like  a little interference or jumping, but that wouldn't be too much of a biggie to me). More especially if it says to be "Fully wired" which some of the results do.

Fully wired just means that all 21 pins are connected straight through on both ends of the cables. Vast majority of cables are full wired.
Regarding cables, I would advise to get one of a decent quality - the cheapest ones have just flimsy wires connecting the pins (avoid), better ones have min-coax cables for the important signals , while the best ones have coax cables for all signals.
Either fo the later two will be fine for your purposes. An example of a cable which has coax for all signals is Vivanco Sound and Vision range (like this one: http://www.ukeshopper.com/index.php?main_page=product_info&cPath=94&products_id=25&zenid=mlhgs85qgio2oenjaborku4jf1)- this I know for a fact since I cut it open for another project.

[vrada501]

Ok, a while ago I just decided to order that VGA to Scart cable I linked to on Ebay,
and I just want to conform to anyone who was worried about it being region picky like I was, that it works perfect in my set up!

Once again to those people, my set up consist of PC> VGA to Scart Cable> YUV converter > NTSC/American CRT TV

while everything is working fine, there's still a few *minor* problems here and there depending on the game or emulator that I'm in the middle of figuring out that is all likely software related.
They seem like small things I should be able to figure out by looking at other threads, but if nothing I do helps I'll probably start a new thread of them, or on this thread ff Admins and others would rather have it there.