Question:

What is the function of the coarse adjustment and how do I use it?

Answer:

The coarse adjustment is used to help clear digital noise from the screen and help clear the picture.

Think of the coarse adjustment on a microscope.

Adjusting this option you will see changes from one side of the spectrum to the other.

Use the coarse adjustment to get close to being the clearest it can be, and then use the Fine adjustment to make the small adjustments.

After selecting the coarse option use the left and right arrow buttons to make adjustments.

After making your major adjustments press the down arrow to move to the Fine adjustment.