There is no V0 pin just VOUT
Well, you did not provide much of information, but what i see from http://wenku.baidu.com/view/ebf9d797daef5ef7ba0d3c0b.html, i would say that there IS a "V0".
0v->0v
maybe this should be
V0->var. pot 
Oliver
There is no V0 pin just VOUT
Well, you did not provide much of information, but what i see from http://wenku.baidu.com/view/ebf9d797daef5ef7ba0d3c0b.html, i would say that there IS a "V0".
0v->0v
maybe this should be
V0->var. pot
Oliver