To Key in the Distance to Move the Display Depth

Do one of the following:

Key in SET DDEPTH RELATIVE front,back.

or
Key in DD= front,back.

Front and back are the distances, in working units, to move the front and back clipping planes, respectively.
Select the view(s).
If the Active Depth is not within the range specified by the Display Depth, the Active Depth is automatically changed to the front clipping plane.