RGB to VGA adaptor

[Stedy]

Sperret, that looks like the Gongbes unit, commonly sold on ebay. Here are the tech specs, sorry about the formatting, the website is down, this is taken from my Onenote book.

GONGBES
8220
The high definition converter GBS-8220 is a professional game& playstation display converter. Supported all games(Amusement. Play statioft Xbox. wii )convert to CRT monitors LCD monitor PDP monitor Auto scan CGA1EGAIYUV signal, VGA outputs, output high resolution signal.
Power
DC5V 2A ±1- 0.5v
P7 or P9
Input
signal
CGA/EGA
14.5-16.5K
23.5-25.5K
30.5-32.5K Auto scan P3 or P11 or PlO
RGBHV  30.5-32.5K  Auto scan PlO or P11
VGA
30.5-32.5K Auto scan PlO or P11
Ypbpr  
480p, 576p,720p, 1080p Auto scan P2
Ycbcr
480i,576i,720i, 1080i Auto scan P2
Output signal
VGA
640*480,800*600
1024*768,1360*768
P4 and P13

User control
Input Switch, Image Zoom, Image Position,
Output Resolution ,R\G\B gain adjust.
Menu Key
R\G\B VR
Dimensions
115*105*20mm

The main issue is that it will not be able to process the RGB video from the Amiga. It accepts YPbPr/YCbCr video but this is a different colourspace (the picture may work but will have incorrect colours).

You will need one of these to colourspace convert:
http://www.jaycar.co.uk/productView.asp?ID=KC5398&keywords=video+converter&form=KEYWORD

Ian

[Stedy]

Take a look at the updated website page here:
http://www.gonbes.com/en/product_detail.asp?menuid=95&id=23

The Amiga's video output is around 15 KHz horizontal scan rate. The only matching video mode listed directly is CGA/EGA. If you were to connect the Digital RGB pins (pins 7-9) and the digital intensity (pin 6)  of the Amiga to this adaptor via the P10 or P11 or RGBHV 15 way d-type, you will get an image but only in 16 colours.

The only other way to utilise this adaptor is to take the RGB output, use an Analogue RGB to YCbCr/YPbPr/YUV colour space converter and add an attenuated TTL CSYNC signal from the Amiga, to the Y video output. You could then use the 480i (NTSC) or 576i (PAL) modes that this device supports.

There is an Amiga RGB to component/YUV video adaptor currently in development, not by myself but I am aware of it and reviewed the design, that could be used with this interface adaptor.

Ian