Hello All 
I have tried to convert my Virtua Fighter 2 cabinet to a Jamma, but has stumbled on this problem 
On my screen wires must be installed like this 
GND SYNC B G R 
DEM DEM   AC AC 
DEM to be connected only with SW 
1. The top line is no problem, but is there anyone ho can explain to me what the DEM and SW means? 
2. AC and AC are just ordinary. phase and zero? 
3. Where on the screen can you see how many volts it takes? 
Hope you can help me
Regards 
Peder