DDR Machine Video Info
DDR Machines offer an external monitor output on the back of each machine. To the untrained eye, it may seem like a normal VGA port that you can stick any PC monitor into. Unfortunately, this is not the case.
If you take a look inside the machine itself, you'll see that there are 2 sets of video signals leaving the Jamma loom. One heading to the arcade monitor itself, and the other, heads towards that external back plate towards the bottom right of the machine. Each of this signals are one of the same and carry the same signal frequency to it's destination.
DDR Machine External Output (from backplane of bottom-right)
Video Connector Type: DSUB 9-Pin
Video Signal: 15khz RGB Signal
Audio Output: RCA LR audio line-out
How to Connect a VGA PC Monitor to the External Socket
The standard frequency for a VGA PC Monitor is 31khz. You will need a small card which converts the 15khz RGB signal to a 31khz VGA signal. You can purchase these cards for roughly $25 on eBay. Simply connect the card to the back of the machine, then the cards output VGA port to a PC Monitor!
These converter cards can typically handle the following tasks:
Latest & official HD9800V.4 HD-Converter Board use SAMSUNG IC.
Supports CGA/EGA/VGA/YUV Component Signal Input
Supports VGA Output (640 x 480, 800 x 600, 1024 x 768, 1360 x 768)
CGA/EGA/VGA signal auto scan (15KHz, 24KHz, 31KHz)
YUV Component signal auto scan (480i, 576i, 720i, 1080i, 480p, 576p, 720p, 1080p)
On Screen Display (English and Chinese)
Supports image position control & image zoom control
True digital 24-bit A/D converter for true 16.7-million color conversion.
Supports ALL types of VGA monitors (CRT, LCD, PDP, Projector, etc)
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