I have a power controller here and I try shorting these two prongs but it doesn't turn on and give me 12 volts. I'm new to electronic engineering so does the 10 vdc on the manual mean that I have to apply 10 volts dc to the prongs in order for the power supply to turn on?

Here's a pic

For reference, the manual is here (PDF). The connectors are shown by the figure at the top of page 5.