RGB pattern generator

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kiks

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rgb pattern

Hi all

Does anyone have a circuit or link for a RGB pattern generator? This is for testing of monitors as used in arcade game machines. I do have a pattern generator for computer monitors. This does not work on the arcade game monitors. These monitors have inputs R. G, B, ground and synch. The synch is either composite, negative or positive. Most of these monitors work on 15.75Khz. All I require is colour bars and cross hatch.

If anyone is interested I have a pdf file complete with documentation, software and schematic of a video pattern generator for TV which is PIC based and works very well. This was designed by Marcello Maggi.
 

rgb pattern generator

I attached a file that contain some usesfull information about vga and rgb
 

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