Neo Geo MV-1C video output voltage?

[HDgaming42]

I recently got a really cool consolized kit for Neo Geo MV1C boards that uses SNES controllers:


https://www.tindie.com/products/chipnet ... herboards/

It works great, but the video seems hot. Is this similar to how dreamcast VGA seems to be overdriven?

Does anyone know the standard output voltage of a MV1C, and what it needs to be tamped down by to get it within spec? Thanks!

[Ryeno]

I recently got a really cool consolized kit for Neo Geo MV1C boards that uses SNES controllers:


https://www.tindie.com/products/chipnet ... herboards/

It works great, but the video seems hot. Is this similar to how dreamcast VGA seems to be overdriven?

Does anyone know the standard output voltage of a MV1C, and what it needs to be tamped down by to get it within spec? Thanks!

dreamcast isn't "that" overdriven. The real problem with dreamcast is the voltages not linear 0-100IRE.

[beharius]

To get the best possible video output you need our VGA16 scan-doubler or RGB16 video amplifier board. They are all optimized for the Neo Geo with impedance matching outputs.

https://www.beharbros.com/rgb16
https://www.beharbros.com/vga16-mvs

[Josh128]

I recently got a really cool consolized kit for Neo Geo MV1C boards that uses SNES controllers:


https://www.tindie.com/products/chipnet ... herboards/

It works great, but the video seems hot. Is this similar to how dreamcast VGA seems to be overdriven?

Does anyone know the standard output voltage of a MV1C, and what it needs to be tamped down by to get it within spec? Thanks!

What do you mean the output seems hot? Whats the peak to peak voltage on a full white screen?

[beharius]

It has only 220uf caps on the RGB lines.

[HDgaming42]

What do you mean the output seems hot? Whats the peak to peak voltage on a full white screen?

Is there a way I could determine this without dropping $400 on an oscilloscope? (the picture isn't of mine).

[HDgaming42]

To get the best possible video output you need our VGA16 scan-doubler or RGB16 video amplifier board. They are all optimized for the Neo Geo with impedance matching outputs.

https://www.beharbros.com/rgb16
https://www.beharbros.com/vga16-mvs

The RGB16 looks very interesting. Can't wait until it's out and has some reviews!

[L-Train]

I have 2 MV1Cs and measured the RGB output into 10K ohm loads. I got R/G/B peaks of 3.46/3.48/3.48V on one unit and 3.46/3.47/3.47V on the other. To get 0.7V a voltage divider of 7.87K/2K should do the trick.

Spoiler

R


G


B

[Josh128]

Nice, thanks for the info. I believe that most if not all JAMMA arcade boards use this TTL level RGB output.

[Josh128]

Nice, thanks for the info. I believe that most if not all JAMMA arcade boards use this TTL level RGB output.

[HDgaming42]

I have 2 MV1Cs and measured the RGB output into 10K ohm loads. I got R/G/B peaks of 3.46/3.48/3.48V on one unit and 3.46/3.47/3.47V on the other. To get 0.7V a voltage divider of 7.87K/2K should do the trick.

Spoiler

R


G


B

Thanks so much for taking the time to test this and post the results! Saves me buying an oscilloscope!