What PCB do you use for monitor test patterns?

HMOON

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Ok guys, I am looking for a pcb for my monitor testing that will produce a grey scale or color scale in test mode for my bench setup. I don't have the room for large test equipment at this time and my WG pattern generator does not produce a color scale or grey scale. Is there a board someone here uses that lets you dial in colors well?
 
Ok guys, I am looking for a pcb for my monitor testing that will produce a grey scale or color scale in test mode for my bench setup. I don't have the room for large test equipment at this time and my WG pattern generator does not produce a color scale or grey scale. Is there a board someone here uses that lets you dial in colors well?

I use a cps2 game. Don't know if it has a grey scale though.
 
What resolution and framerate? And what HSYNC rate? (15.7 kHz I assume). And what kind of output are you looking for? If you want RGB, that's not too difficult to build one.
NTSC grayscale is easy too. (Color is evil though) Actual what kind of color test do you want? Patches? stripes? gradients? Only one color at a time or mixed?
 
I've been using Mortal Kombat. Just the main board, no sound board. It works well enough, and it has a DIP switch setting so it always comes up in test mode. It has solid color screens, a color bars/color scale, and crosshatch.

-Ian
 
Looking for CGA 15.7Khz and RGB output. Was just trying to avoid using converters to get my signal to RGB. Single color would be fine, but for grey it would be nice to have a stair case pattern.
 
Mortal Kombat sounds like a cheap solution for color scale. Can you post a pic of what it looks like in test mode for color scale?
 
You might rethink needing greyscale because you'll still end up readjusting it in the cabinet.

I've used a Crapcom Bowling PCB for years to smoke test JAMMA builds and test monitor rebuilds, and a Williams Stargate cab if I need to refine the convergence. William's test patterns coupled with the cab's built in reflector are wonderful.
 
I don't worry about greyscale. I use one of the cheap 48-in-1 boards and boot to the color grid. Red, green, blue, and white....
 
Here is what I currently use, but it doesn't have color scale. I bought it directly from WG years ago and for about half the price.

http://www.happcontrols.com/monitors/49073400.htm
Ouch! Expensive. Test equipment hurts me. For RGB, 15.7kHz you could do something pretty useful for much less. Grab a crystal and some TTL and a couple of EPROMs and you're all set. Oh...and some resistors for DACs. And a quad opamp if you want low impedance outputs. With a very basic circuit you could have all of the basic test patterns that you want.

If you want to roll your own, PM me.
 
I use a Sinistar boardset. It has the added bonus of being able to switch into game mode and be called a coward for a while :).

ken
 
Hey guys is this possible ?

I need to set the convergence on a Sanyo and they run at lower voltage so I can't put it in a Defender cab . Could I power the Sanyo in a Nintendo cab and take the Video cable from the Defender cab and run it into the Sanyo , with an inverter board of course . Is it not good to power two arcade cabs together like that ?
 
Is it not good to power two arcade cabs together like that ?

Nope - that's perfectly fine. A good troubleshooting tool is simply a long video extension cable. You can plug it into a known working game and then run it to the unknown monitor in another game (or vice versa) for testing.

-Ian
 
Nope - that's perfectly fine. A good troubleshooting tool is simply a long video extension cable. You can plug it into a known working game and then run it to the unknown monitor in another game (or vice versa) for testing.

-Ian

Awesome !

I've been wondering how the hell am I supposed to do the convergence on a Sanyo when it runs at lower voltage and I can't put it in another cab , now I know how !
 
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