I have a zoom controller I bought from foxtech that converts a 3 way servo signal into a zoom control signal.

The way I think it should work is when the Zoom controller receives a positive axis signal an led on the board lights up green and the output is about 5v dc.

When you feed it a negative axis signal the board lights up red and should put out a -5 v dc signal.

My "Zoom cam controller" does not put out anything at all when I supply a negative signal but the red light comes on.

i contacted foxtech and they told me to return it and i did and they sent it back but it still does not work!

I even made a you tube video to show the problem.

If anyone has the zoom cam controller can you measure the output when the light is red?