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JVS/JAMMA CBOX PROBLEMS

Do you know if this works both ways?

https://www.retrogamingcables.co.uk...out-scart-to-4-x-bnc--2-x-rca-converter-cable

I have BNC adapters to convert that end to RCA female, which would let me plug in my existing cable to this, and the SCART end directly to the Retrotink.

I'm assuming this will work, but I also assumed the RGB cable would work, lol.

EDIT: as for the Ebay link above, when I shared it I was on my phone and didn't realize it was a female SCART lead.
 
I'm not certain if it would work in reverse, but if I had to bet money on it I would lean on no because it's wired so that the SCART side is input and the 4BNC is output. This is used with SCART switching boxes. I suppose you could change the wiring on the SCART end; I did this on a cable that was supposed to input into a Framemeister, but I wanted it to output from a Jasen's Customs MK30 supergun instead (just had to move some stuff around on the SCART side with a soldering iron which took five minutes). You could probably ask them to wire it for you the way you want though and avoid the trouble.

That being said though, for the same amount of money, you can just get the SCART cable you need that will be guaranteed to work from the get go. It will be way less cumbersome, and you can always keep that RGB15 to 5BNC cable you have in storage in case you ever score a pro-CRT monitor later down the road.

In addition to messaging RetroGamingCables UK and Retro-Access, If you put a WTB ad up here on the forum maybe somebody will even offer to make you a cable for a charge or point you in the right direction. Reference the pictures I gave you for the pinout to ensure you get what you need. Because it is his supergun, you could try messaging Axun as well. Message on his website, not here. If all you need is a cable he may be able to get one out to you if he has extras. I imagine that for cables he makes them that it's done in multiples and not one at a time when ordered as he does with superguns.
 
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Thanks for all the tips. I emailed RGC who essentially ignored my request and said "don't connect a supergun to the Retrotink", haven't heard back from users on here, and am waiting on a response from Axun. I ordered what is listed as a DIN8 to SCART, and VGA to SCART from RGC just to get the ball rolling, but am hoping to get a more "official" response soon. I also ordered the exact cable from Axun.

EDIT: this is the reply I received:

"Without knowing whether the output levels of the RGB are correctly attenuated for 75ohm consumer grade equipment I wouldn't make a cable for it unfortunately.

The CBOX is based on an Arcade board, this uses TTL video, which is not designed for consumer grade TVs and up scallers."

Is there more specific information published that could help this along? I have a feeling I'm gonna be waiting for a while from Axun.
 
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@Joko3 Alright, so while I'm waiting on the "proper" cables, it occurred to me I could just hook this up via RGB > OSSC.

Using a CPS2 board, it was plug and play, looks great and fires up without issue. Is there anything I should be concerned about with this setup? I'm paranoid to plug in anything more valuable at the moment until I get some feedback; I'm pretty new to this type of arcade setup. Also, are there any adjustments or changes I should be considering?
 
"RGB impedance can be set in 4 modes: pass-through, 75 ohm, 150 ohm, 75 + 150 ohm (now it has been changed to 0-500 ohm linear adjustment)"

How do I do this? The photos appear to use switches, but I have a knob in that area.
 
plasticfactory said:
"RGB impedance can be set in 4 modes: pass-through, 75 ohm, 150 ohm, 75 + 150 ohm (now it has been changed to 0-500 ohm linear adjustment)"

How do I do this? The photos appear to use switches, but I have a knob in that area.
Click to expand...
You just turn the knob and it adjusts.

I would have honestly preferred switches as the knob blows things out quickly.
 
Sorry for the noob questions, but how do I know when it's set on a specific impedance, or correctly in general? Or am I basically just adjusting until it looks right? I'm mostly just afraid of damaging my RT5X.
 
You don’t know the impedance with the knob which is why the switches are better.

Just leave it on factory settings, or what looks right.
 
Thanks, that's what I did. It seems odd not to use the switches but I suppose some people prefer the finer adjustment.

This is not so much a CBOX problem, but maybe you can help -- I have total success using it with every arcade PCB I have thrown at it, but I simply cannot get my m72 multi to display the entire screen (vertical). After all my tweaking on the rt5x I figured this is just how it is (weird resolution input or something), but wondered if there is anything else I could try?

EDIT: more specifically, it's cut off on the bottom where you would typically see scores. I've tried adjusting crop/scale settings in the rt5x with no luck.
 
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Not sure sorry. Don’t use modern screens for JAMMA.

FWIW, M72, Toaplan, etc. have different screen real estate than most other boards.
 
Believe me, I'd rather not use a modern screen. I'll be picking up a BVM soon.
 
plasticfactory said:
Thanks for all the tips. I emailed RGC who essentially ignored my request and said "don't connect a supergun to the Retrotink", haven't heard back from users on here, and am waiting on a response from Axun. I ordered what is listed as a DIN8 to SCART, and VGA to SCART from RGC just to get the ball rolling, but am hoping to get a more "official" response soon. I also ordered the exact cable from Axun.

EDIT: this is the reply I received:

"Without knowing whether the output levels of the RGB are correctly attenuated for 75ohm consumer grade equipment I wouldn't make a cable for it unfortunately.

The CBOX is based on an Arcade board, this uses TTL video, which is not designed for consumer grade TVs and up scallers."
Click to expand...

Was that the reply from RGC, or from Axunworks? It would be ridiculous for a supergun maker to say their supergun isn’t meant for use with consumer-grade equipment. It’d also be curious from RGC, since they would know most consoles output TTL and need a resistor on Csync to be safe with equipment expecting 75 ohm.

I have the official Axunworks SCART cable, but if that response was from Axunworks, it would make me think that there’s no Csync resistor in it and it’s basically not safe to use with anything. Every product I have that could take SCART input (Gscartsw, RT5X, RGB2COMP, OSSC, consumer TV) is designed for 75 ohm. Do we know that the Axunworks SCART cable has the appropriate resistor? Do I need to open mine up to check?

FWIW, the pinout from the Axunworks 8-pin looks like AES / Genesis 1 / Master System except that Axun is sending right channel audio out of the pin SNK and Sega used for sync. Does that mean AES / Genesis 1 / SMS cables would route that pin toward something damaging if used with the Cbox? (As well as not supporting stereo, of course.)
 
It was from RGC. I was surprised by the response considering my experience with their products, and their experience in the industry. In any case, I wound up just ordering the appropriate cables from Axun and waiting patiently. The current setup works great.
 
plasticfactory said:
It was from RGC. I was surprised by the response considering my experience with their products, and their experience in the industry. In any case, I wound up just ordering the appropriate cables from Axun and waiting patiently. The current setup works great.
Click to expand...
So you're using it with an RT5X without issue? Have you used it with a gscartsw?
 
9999 Damage said:
So you're using it with an RT5X without issue? Have you used it with a gscartsw?
Click to expand...

I still have sync issues with some board sets (eg, Taito f3), but it works great for most games. I'm hoping the upcoming Retrotink 4K is the end all for this type of setup.
 
For now I'm going to hold out on the new Retrotink product, but will take a look. Thanks for the tip.
 
plasticfactory said:
I forgot to note, I have not tried it with the the gscartsw, but do use it with the component version of that product and it works great.
Click to expand...
Thanks. I’m leery of anything SCART without reassurance that the cable has the appropriate resistor on the sync line, and I can’t find any such confirmation (except that you haven’t blown up your RT5X). For the Cbox’s DE15 port, it only outputs RGBS, not YPbPr, right? So DE15 to component would still be RGBS, which would work fine on a RT5X but not on my CRT’s component inputs.
 
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