Jump to content
retrofez

Atari ST - VGA - Dell u2412m

Recommended Posts

Guys,

 

I really hope you learned clever clogs can help. I bought the vga cable from coolnovelties and I'm running a Dell u2412m. Arguably amongst the best monitors that still support 15Khz. 

 

Problem is when playing games I get these horrible lines in the image.

 

Any thoughts as to why?

 

I've tried another monitor and have the same issue. (identical monitor)

 

I'm wondering if the cable is just sub-par?

IMG_0279.jpg

Share this post


Link to post
Share on other sites

Thanks for getting back so fast! Really appreciate it. I've tried altering all the settings on the monitor. Can't get rid of these ugly lines :(

Share this post


Link to post
Share on other sites

That's usually associated with poor shielding in the cable, I made my own VGA cable by cutting one end

off a standard VGA cable and soldering the Atari plug on.  

  • Like 2

Share this post


Link to post
Share on other sites

I have the same monitor and took some photos for you as reference. You definitely can achieve better.

Mine is through ubeswitch and a cheap vga cable I had around. 

File_000.jpeg

File_001.jpeg

File_004.jpeg

File_005.jpeg

  • Thanks 1

Share this post


Link to post
Share on other sites

Where did you buy that? (realised yours is the ubeswitch)

 

I've found a couple with wildly different prices:

 

https://www.ataristsales.co.uk/shop/parts-and-spares/atari-st-parts-and-spares/atari-st-custom-upgrades/ubeswitch-mk6-v1-3-video-sound-adaptor-atari-st-computer-din-vga-colour-and-high-res-mono/

 

https://centuriontech.eu/product/st2vga-r4/

 

I've ordered the centurion tech one. I'l get back to you guys with the results when it arrives.

Apparently it's on back order. 

 

£60 for the ubeswitch seemed a bit steep by comparison.

Edited by retrofez
Updated with new info

Share this post


Link to post
Share on other sites

I notice even yours Robson, has faint lines. Why is it we can't get that absolutely flawless picture? I've got an RGB scarf cable and I think the picture on a crt looks better! Maybe pair that with an OSSC.

Share this post


Link to post
Share on other sites

I used a BEST Electronics VGA cable for a while with an NEC MultiSync LCD1970VX. Low resolution looked well enough, but medium resolution was mediocre at best. high resolution looked decent with enough adjustments. Now, though, I use an OSSC and I can use any HDMI compatible display that I want. I use a Cool Novelties RGB to SCART cable with the OSSC and low and medium resolution are picture perfect for me. Honestly, I rarely use high resolution.

 

The OSSC does a great job, but it's not cheap. Also, for anyone that might be considering that route, I'd definitely hold out a little longer for the OSSC Pro now.

 

 

Edited by bfollowell

Share this post


Link to post
Share on other sites
45 minutes ago, retrofez said:

Where did you buy that? (realised yours is the ubeswitch)

 

£60 for the ubeswitch seemed a bit steep by comparison.

 

I notice even yours Robson, has faint lines. Why is it we can't get that absolutely flawless picture? I've got an RGB scarf cable and I think the picture on a crt looks better! Maybe pair that with an OSSC.

I agree about pricing. I didn't buy it, since the sources are available I made a batch for myself and friends.

Yes, even on mine have those lines, this is why I took this many photos. I only showed my montior setup because it's the same model as yours but I don't use any STs with this at all. I have a smaller LCD TV (Syncmaster 940MW) with scart (or CM8833MK2)  if I want decent quality.

The thing is that something can display the signal, doesn't mean it's the right tool for the job. As you said proper signal conversion needed. But still might not give you the same crystal clean/sharp result you expect. I used scart - HDMI converter (then HDMI-DVI adapter to the monitor) before. I can try to dig out an image if you're interested in seeing that.

 

Edited by Robson
  • Like 1

Share this post


Link to post
Share on other sites

You've clearly done lot's of research into this. I'm interested in anything you have time to show to be honest.

 

I'm happy to return the favour when this adapters arrive. Although it has to be said, my instincts are telling me the best result will be from my trusty RGB smart cable and an OSSC.

Share this post


Link to post
Share on other sites

Just mentioned it as an alternative I used before, since it wasn't your original question. But worked for me keeping the VGA input for the falcon and the dvi for the ST, while the PC was on the display port. 

This was a scart to hdmi scaler and then I used an hdmi to dvi to the u2412m.  

DSC08749.JPG

20151014_212010.jpg

Edited by Robson

Share this post


Link to post
Share on other sites
On 1/14/2021 at 6:11 AM, bfollowell said:

The OSSC does a great job, but it's not cheap. Also, for anyone that might be considering that route, I'd definitely hold out a little longer for the OSSC Pro now.

 

I recently purchased a OSSC because I’m done buying old monitors to run my retro gear. I spent the morning setting it up.  I’m using a ubeswitch so I can display all three resolutions. The results are outstanding.

0CAE68CE-5671-4FEE-917C-A5D26E50EA8F.thumb.jpeg.cbf64b9406b9b70e8eb16fb030be4019.jpeg

 

BF2C6BEB-2D32-4B8A-8950-1DD25353CF0F.thumb.jpeg.f0f7b12f14499cdedad5b440c426c0b3.jpeg

Share this post


Link to post
Share on other sites
1 hour ago, mdivancic said:

I recently purchased a OSSC because I’m done buying old monitors to run my retro gear. I spent the morning setting it up.  I’m using a ubeswitch so I can display all three resolutions. The results are outstanding.

 

Nice images.

 

I don't have an ubswitch, though I may get one. I have one of BEST Electronics' Best V2 VGA cables with the built-in switch. It works OK, but medium resolution was never more than so-so and high was just OK, but not great either. I have a Cool Novelties RGB-SCART cable that I connect to my OSSC and low and medium resolutions are unbelievably clear and beautiful. I seriously doubt that I'll ever have a need or desire to use high resolution all that much, but I'd like to get an ubeswitch, just in case I ever want to. I think a decent ubeswitch and VGA cable will probably give a better high resolution image than the Best cable I'm using now.

 

Once I get my VBXE installed and running in my 1088XEL I have a Cool Novelties RGB-SCART cable for, so I'll be able to use my OSSC for my 8-bit as well.

 

Share this post


Link to post
Share on other sites

Hi Folks,

 

Updates as promised. While I'm waiting for my centuriontech.eu via adapter to arrive, I thought I'd try a different approach with a popular adapter I've seen doing the rounds on youtube. 

 

https://www.amazon.co.uk/gp/product/B00W9DJMNC/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

 

It's "branded" Flylink and is just called HD video converter. Takes RGB or composite (or hdmi) as an input and hdmi/co-axial and separate audio outputs. The results are IMPRESSIVE!

*** update: there is a slight bit of lag on the connection ***

 

https://www.amazon.co.uk/gp/product/B06WVSLSP3/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

 

Obviously my monitor didn't have hdmi inputs so I bought these digital dvi converters.

 

 

IMG_0308.thumb.jpg.b348aefc94cf3caeff38de4354f38773.jpg

 

Some audio interference lines but I think that might just be my messy setup and a really long budget cdmi lead that I'm using.

 

IMG_0306.thumb.jpg.5da35cd19ad99c2e4a007b5e2a3b3d0d.jpg

 

The device itself with a Retro Computer Shack RGB Smart lead. I only use these guys for cables.

 

IMG_0305.thumb.jpg.d5f03b210ee27175b3de7ebf609ac26c.jpgIMG_0304.thumb.jpg.bf8a2f0a6afc83e776241959df45f98d.jpg

 

This picture really doesn't do the output justice. Those diagonal lines aren't visible to the eye.

 

Honestly guys. I will send updates when the centurion tech ube adapter turns up because obviously it's switchable to hi-res and I want to compare results. But this setup now, I'm very pleased with! I might buy a couple more to be honest! It's a great solution for connecting anything composite/RGB to a modern display!

 

Tell me your thoughts.

 

 

 

 

Edited by retrofez

Share this post


Link to post
Share on other sites
On 1/16/2021 at 9:07 PM, mdivancic said:

I recently purchased a OSSC because I’m done buying old monitors to run my retro gear. I spent the morning setting it up.  I’m using a ubeswitch so I can display all three resolutions. The results are outstanding.

0CAE68CE-5671-4FEE-917C-A5D26E50EA8F.thumb.jpeg.cbf64b9406b9b70e8eb16fb030be4019.jpeg

 

BF2C6BEB-2D32-4B8A-8950-1DD25353CF0F.thumb.jpeg.f0f7b12f14499cdedad5b440c426c0b3.jpeg

 

They are the ultimate. And I'm overdue to pick one up, but boy oh boy they're dear!

 

Share this post


Link to post
Share on other sites

Forgot to show medium res mode. Not quite as clean as mdivancic's.

 

Also I forgot to mention a slight caveat with the HD video converter. There is a 'slight' but noticeable lag. I didn't realise until after the other post.

IMG_0309.jpg

Share this post


Link to post
Share on other sites
On 1/13/2021 at 2:57 PM, TGB1718 said:

That's usually associated with poor shielding in the cable, I made my own VGA cable by cutting one end

off a standard VGA cable and soldering the Atari plug on.  

Which monitor are you using? Are you using an upscaler or line doubler?

Share this post


Link to post
Share on other sites

Yet another update!

 

My NEC MultiSync LCD1970NXp arrived not much more than an hour later. Thought it would be rude not to include the differences!

 

IMG_0313.jpg

1: Connected with CoolNovelties VGA cable directly

 

IMG_0314.jpg

2: As you can see those lines similar to on the Dell u2412m are still present but nowhere near as noticeable. In fact the camera is making them look worse than they look in real life.

 

IMG_0316.jpg

3: Retro Computer Shack RGB scart Cable connected to Flylink HD Converter and a hdmi to dvi-d adapter. This looks REALLY crispy!

 

IMG_0317.jpg

4: I'm 90% satisfied with this. This monitor is pretty much bang on. The picture looked at it's sharpest upscaled to 1280x1024 at 60hz. This is a native resolution for the monitor and it's receiving it as a digital signal so you can't adjust the position.

Got the RGB set to sRGB here. Very bright, very colourful. If not for that damn lag. It's only small but it's there!

 

Edited by retrofez
typos

Share this post


Link to post
Share on other sites
2 hours ago, retrofez said:

Which monitor are you using? Are you using an upscaler or line doubler?

dell 1908fpc but only for Mono Hi Res

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...