JAMMA RGB on C= 1084s. Need Help

[carlosemandrade]

Hello all 

Is there any problem to wire directly the r,g,b,sync,gnd outputs of a jamma board (mvs or other standalone arcade board like double dragon, robocop, etc.) on a C= 1084S (DB 9 model, witch csync input) or some components are required between the boards and monitor ? 

Thanks

Carlos Andrade.

[NFG]

You can wire it straight up without trouble.  I've done it myself.

[carlosemandrade]

Ok, Thanks Lawrence 

[carlosemandrade]

Success 


Here´s the first test:


JAMMA PCB - Blood Warrior


R,G,B with 75 ohm resistors, Csync directly 

[RGB32E]

Success 

R,G,B with 75 ohm resistors, Csync directly 

That's cool!  Try using 150 ohm resistors instead of 75 ohm.  It looks like the signal is a bit strong on that monitor... 

[carlosemandrade]

It's the camera. The picture is very good, but i'll try 150 to compare results 

[RGB32E]

It's the camera. The picture is very good, but i'll try 150 to compare results 

I'm not familiar with that particular PCB, but with others (e.g. CPS2/3, ect), the output signal is way too strong for a non-arcade monitor, and 75 ohms will not be enough to lower the signal level, that's all.   Do you have the brightness and contrast settings turned down considerably on your 1084?

[carlosemandrade]

Brightness/contrast on monitor are at "default" level.
I'm planning to buy other boards, and considering using pots instead resistors to have better level control. i have some 1k pots