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 Post subject: Re: Limited run of 1:2 simultaneous output RGB Scart boxes
PostPosted: Thu Mar 19, 2020 1:58 pm 



Joined: 01 Mar 2018
Posts: 469
Sumez wrote:
It's useful if you're doing video capture via analog VGA inputs. You need a separated sync channel for that.


Is it selectable? Can I enable/disable when needed on this device?


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 Post subject: Re: Limited run of 1:2 simultaneous output RGB Scart boxes
PostPosted: Fri Mar 20, 2020 6:17 am 


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ldeveraux wrote:
Sumez wrote:
It's useful if you're doing video capture via analog VGA inputs. You need a separated sync channel for that.


Is it selectable? Can I enable/disable when needed on this device?


There's a jumper inside for switching it, I believe. The manual should be in there with the link.

They also sell one with no sync stripper.
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 Post subject: Re: Limited run of 1:2 simultaneous output RGB Scart boxes
PostPosted: Fri Mar 20, 2020 8:18 pm 



Joined: 12 May 2013
Posts: 24
If I'm understanding the manual correctly, changing the jumper configuration won't disable the sync separator. Unless removing both of the jumpers disables/bypasses the sync separator, I don't see how it's possible. I'm guessing you would have to ask the seller.

Sumez wrote:
It's useful if you're doing video capture via analog VGA inputs. You need a separated sync channel for that.


This usually requires TTL sync (at least with Datapath/Micomsoft cards). According to the manual, the output is not TTL (which is perfectly understandable).

Please correct me if I'm wrong.


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 Post subject: Re: Limited run of 1:2 simultaneous output RGB Scart boxes
PostPosted: Sat Mar 21, 2020 3:25 am 


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Joined: 05 Nov 2019
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There's a model without a sync splitter in it, it may be a bit hard to notice but there is a box you can click on the site to choose between a sync splitter model or one without!

Image

Here's the instructions for mucking around with the sync separator model. It's a versatile little unit!
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 Post subject: Re: Limited run of 1:2 simultaneous output RGB Scart boxes
PostPosted: Sat Mar 21, 2020 3:29 am 


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Calle W wrote:
If I'm understanding the manual correctly, changing the jumper configuration won't disable the sync separator. Unless removing both of the jumpers disables/bypasses the sync separator, I don't see how it's possible. I'm guessing you would have to ask the seller.

Sumez wrote:
It's useful if you're doing video capture via analog VGA inputs. You need a separated sync channel for that.


This usually requires TTL sync (at least with Datapath/Micomsoft cards). According to the manual, the output is not TTL (which is perfectly understandable).

Please correct me if I'm wrong.


I know a lot of people use the Sync Strike with the USB3HDCAP, and then there's also the Insurrection Industries SCART2DVI designed for Datapath cards (works with the USB3HDCAP/Micomsoft as well). You could check those sites and/or contact them and double check on it
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 Post subject: Re: Limited run of 1:2 simultaneous output RGB Scart boxes
PostPosted: Fri Apr 03, 2020 3:05 pm 


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Joined: 03 Apr 2020
Posts: 3
Location: UK
Calle W wrote:
If I'm understanding the manual correctly, changing the jumper configuration won't disable the sync separator. Unless removing both of the jumpers disables/bypasses the sync separator, I don't see how it's possible. I'm guessing you would have to ask the seller.

Sumez wrote:
It's useful if you're doing video capture via analog VGA inputs. You need a separated sync channel for that.


This usually requires TTL sync (at least with Datapath/Micomsoft cards). According to the manual, the output is not TTL (which is perfectly understandable).

Please correct me if I'm wrong.


I'm the creator of this device and since it's SCART output, yes, the levels are to be compatible with SCART's composite video. What would be bad is to have that output at TTL levels when the next bit of equipment can't handle 5V!

Internally there is 5V signals and we could on request put this to one of the unused SCART pins if you wanted. Say, pin 12? We'd probably put it through a resistor just to be sure but it should be ok, and if you have your own lead for going to other devices you can modify to connect to this. That way it would still function as intended, but yours would also ahve the 5V TTL type output.

Would that help?


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 Post subject: Re: Limited run of 1:2 simultaneous output RGB Scart boxes
PostPosted: Fri Apr 03, 2020 3:15 pm 


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Joined: 03 Apr 2020
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kitty666cats wrote:
There's a model without a sync splitter in it, it may be a bit hard to notice but there is a box you can click on the site to choose between a sync splitter model or one without!

Image

Here's the instructions for mucking around with the sync separator model. It's a versatile little unit!


Thank you! Tried to make it as versatile as possible if you wanted to use the sync separator on RGBS as well as RGsB / SoG.

There's two jumpers inside. One is to select the input to the sync separator and disconnecting the jumper removes the input completely from the circuit. Second jumper is to select if you have the Sync line (composite video input) going to the buffer's outputs or the output from the sync separator.

I call this a "Buffer" because of how it works. In electronics a buffer is to have a copy of the input presented at the output. If it were "splitter" you'd only get part of the signal to each output, reducing brightness. Buffering means that we load up the input correctly and then boost the signal to create the correct type of video output that you need on both outputs. And we've done this using high bandwith amplifiers so as not to remove detail from the picture. You really can't tell the difference from a signal that's gone through the buffer to one which hasn't. This also means you don't get reflections of the signals up and down the leads.

One of my own frustrations is how poor some of the consumer electronics have been, and when I set up the company creating video converters it was with the intention to offer the highest quality electronics that you normally don't see in the home.


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 Post subject: Re: Limited run of 1:2 simultaneous output RGB Scart boxes
PostPosted: Mon Apr 06, 2020 12:07 am 


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Joined: 05 Nov 2019
Posts: 358
DrJohn wrote:
kitty666cats wrote:
There's a model without a sync splitter in it, it may be a bit hard to notice but there is a box you can click on the site to choose between a sync splitter model or one without!

Image

Here's the instructions for mucking around with the sync separator model. It's a versatile little unit!


Thank you! Tried to make it as versatile as possible if you wanted to use the sync separator on RGBS as well as RGsB / SoG.

There's two jumpers inside. One is to select the input to the sync separator and disconnecting the jumper removes the input completely from the circuit. Second jumper is to select if you have the Sync line (composite video input) going to the buffer's outputs or the output from the sync separator.

I call this a "Buffer" because of how it works. In electronics a buffer is to have a copy of the input presented at the output. If it were "splitter" you'd only get part of the signal to each output, reducing brightness. Buffering means that we load up the input correctly and then boost the signal to create the correct type of video output that you need on both outputs. And we've done this using high bandwith amplifiers so as not to remove detail from the picture. You really can't tell the difference from a signal that's gone through the buffer to one which hasn't. This also means you don't get reflections of the signals up and down the leads.

One of my own frustrations is how poor some of the consumer electronics have been, and when I set up the company creating video converters it was with the intention to offer the highest quality electronics that you normally don't see in the home.


Oh, missed this post! Hi there, John! Cool to see you've created an account :) I sent ya an e-mail with a quick question about your SCART to VGA scalar, thinking about scooping one up once my cash flow steadies (should be within the next couple weeks).

I'm a bit embarrassed since I'm exposing how green I am right here, but what should I do for physically moving/adjusting the jumpers? I opened up the box a little while back but wasn't certain, haha... didn't wanna end up breaking any tiny bits :shock:
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 Post subject: Re: Limited run of 1:2 simultaneous output RGB Scart boxes
PostPosted: Mon Apr 06, 2020 11:34 am 


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Joined: 03 Apr 2020
Posts: 3
Location: UK
kitty666cats wrote:

Oh, missed this post! Hi there, John! Cool to see you've created an account :) I sent ya an e-mail with a quick question about your SCART to VGA scalar, thinking about scooping one up once my cash flow steadies (should be within the next couple weeks).

I'm a bit embarrassed since I'm exposing how green I am right here, but what should I do for physically moving/adjusting the jumpers? I opened up the box a little while back but wasn't certain, haha... didn't wanna end up breaking any tiny bits :shock:


The jumpers can easily be moved by hand. They have a little tab on them (I went with those because they're easier to grip!) and you gently pull them off the headers and then fit the back on.

That's how you're supposed to do it! But I also find that sometimes with these small jumpers that they leave the connector part behind, so I tend to grip the whole jumper, putting your nail below the bottom of it, to remove it from the header.

No problem answering "green" questions. If you don't know, it's always ok to ask.


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 Post subject: Re: Limited run of 1:2 simultaneous output RGB Scart boxes
PostPosted: Sat Apr 18, 2020 12:48 am 


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Joined: 05 Nov 2019
Posts: 358
Image

I posted this goofy dongle-mess I made elsewhere on Shmups, but to be honest this is actually a cheap and really convenient way for someone to get the signal out to their Startech USB3HDCAP / Datapath capture card (via one of those DE-15 to DVI-I dongles).

Here's some more info on the tech used in the device, I'm not the most tech-savvy so I've been hitting up some outlets for retro gaming to see if they think this is a solid box for those who use SCART on many of their consoles, and would wanna rock this as a convenient box for those analog RGB capture cards / still displaying your gameplay on your CRT rather than watching the video capture on your computer (because when I initially reached out to John, I mentioned sync splitters/separators being a potential option, I know a heck-load of people use Sync Strikes and whatnot for USB3HDCAPs Datapaths etc) -

"The Ti chips seems to work best with the bandwidth limiter in, but that limiter would interfere with HD component. It’s also fixed gain, and that would make some uses we had with the op-amps impossible. Technically it is an op-amp too but pre-configured. They also have some additional parts added to the devices, which helps it work from a single supply, but what I didn’t say is that they would defeat some of the jobs we have for the regular op-amps. A good proportion of the Active SCART Splitter is getting two nice clean voltage lines to power the op-amps. That’s why we needed the +12V external supply because we’re inverting part of it, and that then becomes the required -5V to compliment the +5V we use.

The other part of amplifier design is that it’s very easy to create oscillators by accident. If there’s feedback to the input you risk getting that oscillating loop. As you go up in frequency the parasitics on the board have more and more of an influence, making it more risky to design with a device with exceptionally high bandwidth, hence why the Ti chip has the ability to limit to 15MHz. Unlimited it can do 150MHz, but that could create problems. The first prototype of the RGB to Component converter had an oscillator problem that needed fixed, even though the layout was good. Second prototype had no such issues, it was as quiet as you could get. This highlights how careful you have to be with any amplifier in a design."

This is in John's words in regards to questions on John's choice on using 'op-amps' rather than an 'all-in-one chip from TI' (not sure which that is, is that one of the THS's? I know there's the LM1881 but that's for sync stuff, not amp stuff). Lots of this stuff is beyond me, heh! I'm hyped there is a simple dual output SCART box readily available again for those who don't need a full-on switch or matrix, and John could accommodate the sync stuff needed for capture cards. I really just had primarily, like, analog RGB video capture / Twitch streaming in mind when dreaming this up and reaching out. And with a device that'll keep it in the original resolution! :P

Are those Datapath cards a lot more lax than the Startech USB3HDCAP when it comes to 240p RE: having the proper drivers for the card? And also, anyone here know of some male SCART to male DE-15 (or, hell, male SCART to male DVI-I O_O; if you wanted to cut the Startech's DE-15 to DVI-I dongle out of the mix) cables out there that are reliable and well-shielded? I don't mind this dongle mashup I have, myself... the Optoma thing is built like a tank, I think it's epoxy!

Anyhoo, hope anyone else from here who's picked one up so far has enjoyed theirs, would like to hear your thoughts! It's really so kickass that I could reach out to this AV company that's been around for ages and the head honcho entertained me idea and decided to make a run! Real cool stuff. I originally heard about 'em from older early 2000s posts on AVSforum / AVforums / what-have-you, and the good things people had to say def were on-base heh.

Image

Here's a pic of the PCB, for those who are savvy and interested! :D
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 Post subject: Re: Limited run of 1:2 simultaneous output RGB Scart boxes
PostPosted: Thu May 28, 2020 6:41 pm 


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Joined: 05 Nov 2019
Posts: 358
I think these went down in price? Just looked at the link and it says the normal one is £37.50 and the one with a sync separator is £43.33. I could just be forgetful, it's been a while. Anyone tried that Taxon switch with dual output / the new Tim Worthington one (if that's even out yet!)?
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