flashcut signal generator power supply

Hi,

Tried to view/download Flashcutcnc manual for their signal generator,
but browser keep telling me: HTTP 404 - File not found

http://www.flashcutcnc.com/downloads/SignalGeneratorHardwareGuide/*.*

I just need to know the voltage for its DC power supply and the
polarity of the jack (inside pin positive, outside negative or the
otherway round). Created smoke once when I connected the wrong AC
adaptor (wrong polarity) so being more careful now.

Hope Chris is logged in.

Thanks in advance.

Peter