Atari 7800 Video Sniffed

I have been wanting to do this for awhile but have not gotten around to it. I took my Open Bench Logic Sniffer and sniffed the e (in picture from top to bottom) of the Atari 7800 MARIA chip. This is what the signal looks like before it goes into the video mod (D/A converter).

I am still learning how this translates into a picture on the screen. If anyone has any insight into this let me know.

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