Re: Cinematronics on a oscilloscope

Yes, you need a DAC.
I bought a cine monitor main board on ebay, then I isolated the HV circuit (!) and connect the game PCB to the monitor pcb with a flat cable.
Referring to Rip Off manual on my site:
http://www.vernimark.com/arcade/archive/pdf/ripoff_manual.pdf
page 77 (monitor schematic)
X and Y signals of my scope are connected to the output of R109 and R209, just before amplification circuit: I supposed to see a clear image.

With my ATARI pcbs I see a very clear image connecting probes directly to XY outputs...

Please tell me if something I did was wrong ;-)

vernimark

---------- Initial Header -----------

>From : owner-vectorlist@vectorlist.org
To : vectorlist@vectorlist.org
Cc :
Date : Sun, 13 Feb 2005 20:03:56 EST
Subject : Re: VECTOR: Cinematronics on a oscilloscope

> I am confused. Isn't there a DAC on the chassis of the monitor which is
> needed to drive the deflection circuits? Apparently the digital signal coming
> off the game PCB is sufficient to drive the scope?
> Forgive my ignorance but hell we all gotta learn somehow :)
>
> Art
>

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Received on Mon Feb 14 06:53:05 2005