Converting TV signal from Amiga to HDMI?

[mindprober]

Sorry to hear you are not having the same luck I am. I hope it inspires you to continue testing and possibly modifying one of these boxes to work natively.

I checked on another source for a well constructed RGB to SCART cable but the minimum cable length offered is 2m. That's a lot of unnecessary cable for my setup. I suppose I could build my own but not really wanting to take on too many projects at the moment.

[AmmoJammo]

Where did your current cable come from? How is it wired?

[mindprober]

AmigaKit. How is it wired?? That, I would not know. R,B, & G are definitely passing it through it. What happens with regard to sync.......your guess is as good as mine.  

Where did your current cable come from? How is it wired?

[danbeaver]

Ian Steadman's schematic has a 330 ohm resistor on the Csync with the RGB going straight thru

[djos]

Ian Steadman's schematic has a 330 ohm resistor on the Csync with the RGB going straight thru

His latest version had 220uF caps on each of the RGB lines Iirc.

[AmmoJammo]

I'm beginning to think that these issues actually have nothing to do with bi/tri level sync, but are rather the Amiga/Segas 15khz refresh rate rearing its ugly head again....

This TV has no issue with the scart to component adapter when connected to the RGB output of a Nintendo Gamecube....

It makes me wonder if the monochrome output of the Amiga 500 is actually 31Khz... or at least higher than 15khz...

I was reading that apparently it was intended for word processing on a monochrome screen, and apparently had less flicker in interlaced mode than the RGB output of the Amiga.....

Its all starting to make sense now isn't it?

[AmmoJammo]

I have a Dell 2405fpw that I figured would fail with the scart to component adapter... but it doesn't...

Although there's some jitter, it displays both the Megadrive and Master Systems fine, so I assume will also display the Amiga...

It reports the signal as being 240p or 288p depending if its 60Hz or 50Hz...

[danbeaver]

His latest version had 220uF caps on each of the RGB lines Iirc.

Oh, you mean the schematic that says, "Provisional design for trial use only?"

[djos]

Oh, you mean the schematic that says, "Provisional design for trial use only?"

yep.

[AmmoJammo]

Sony TV reports the sega as 480i...

The tv's I've had issues with are Kogan, and they seem to be horrible... they don't even display composite properly...

[AmmoJammo]

Both the Megadrive and Master system are outputting 15.6Khz horizontal, 49.7Hz vertical sync...

The plug in Tetris game, that will sync when connected to the "green" component outputs 15.6Khz, and 50Hz....

So, that answered nothing at all!

I'm about to test the Amiga 500's monochrome output, but have a feeling its going to be the same 15.6Khz and answer nothing!

Edit: Amiga 500, 15.6Khz/49.9Hz...

[danbeaver]

I love my new Framemeister!

[djos]

I love my new Framemeister!

And I love my Sony PVM14M4A Trinitron monitor.

[AmmoJammo]

Today I made a discovery...

This time a Super Nintendo!

The internet told me I needed to connect each of the R,G,B lines to ground, through 75 ohm resistors, but I decided to leave them out, and see what would happen...

TV reports "Not Supported" and this was a TV that had worked with everything before... (Amiga, MegaDrive, Master System, N64, Gamecube)

Stick the resistors in, works fine! SO I'm thinking the issue with the Kogan TV isn't a sync issue at all....

[mindprober]

(Activate Farnsworth voice)

Good neeeewwwwsss everyone!!!

As a matter of curiosity and because I was never really satisfied with my original cable I bought, I sought out a better RGB to SCART cable. I really liked the build quality I saw here:

http://www.ebay.co.uk/itm/Commodore-Amiga-A1200-All-Models-High-Quality-RGB-Scart-Lead-Cable-TV-Lead-/251044312902?pt=LH_DefaultDomain_3&hash=item3a73683746

So I made my purchase. The cable arrived today and, as expected, it worked just fine with the redirected cable arrangement. So,  just for sh*ts and giggles, I thought I would try it with all three cables connected to the converter....and guess what? It works!

So that either means my AmigaKit cable is not wired correctly or it is just wired to different standards. Can I make the case that it is *wrong* and I should ask for a return/exchange based on this new discovery? The wiring of these cables seems to vary from person to person, so who I am to say something is wrong? Is there a standard?

[djos]

Good work, Im gonna buy one and try it on my TV that doesnt currently like converted Amiga-RGB to Component.

PS, I have their C64 video cables and they are great.