HP 5528A User Manual

Model SS28A
Squareness Mea s urement s (In A Horizontal Plane)
12 -8
Figure 12-4. M ounting of Oplical Square
5. Po s ition the Straightness Int erferometer relative to the Optical Square.
• Bring the Interferometer close enough to the Opti ca l Square to line up the
I nterferometer with the ce nter of the Optical Square's slot. Be sure it is centered in
both axes i up-and-down , and side-to-side).
• This is a very important step. If the Op ti cs are not physically lined up at this point,
aligning
along the travel axis will be impossible.
•
Be sure this establishes the " near end of travel", I.e., that any later movement of the
machine can only incr ease the distan ce between the Opti cs.

HP 5528A Specifications

General

Brand	HP
Model	5528A
Category	Measuring Instruments
Language	English