HP 5528A User Manual

Madej 5528A
Squareness Measurements
(In A Horizontal Plane)
, 2-14
1 7. Translate the laser Head vertically and horizontally to keep the laser beam from being
clipped by the alignment ring on the Slraightness Re lro reflector.
Check this by
making sure you can't see the beam on the Int erferometer surface Ihal fa ces
the Relror eflector .
Any translation o f the laser Head
wi ll cause the two dots to move from their position on the
Optical Square, so you will again have to rOlate and translate the laser Head ( Le ., repeat step
"16" and step "17" several times) before you are done.
You are finished with this procedure when thc beam goes through the Interferometer
with
ou t being clipped, and the two dots are symmetrical aboulthe Optical Square's slotted
opening and in line with the scribed line al the center of the slot. ( Sec Figure 12 -6.)
Pro ce dure For Inslalling Ihe Straightness Refleclor
1. Se lect the small aperture for the exit port on the laser Head. (You can also use Ihe large
aperture
.)
2. Make sure the Int erferometer bezel's sc ribe line is oriented 90 degrees relative 10 the si al in
thc Optical Square.
3. Move the Optics back to the near end of travel, 50 thaI th ey almost touch, and close enough
togcther to gct both dots to go through the Optical Squa re 's first slot without being clipped.
4.
Position the S tr aishtness Reflector at the end of the second measurement axis and center the
tWO daIS on the jun cti on bel ween its mirrors and symmclrical about its slotted opening.
Be sure to orient the RcfleClOr to make a horizontal straightness measurement.
If you can not get tw o dots to strike the surface of the Reflector, remove Ihe Interferometer
fr
om the la se r beam path and repeat thi s step with only one dol.
5. Secu re the Straightness Reflector to the machine after making sure it is as square as possible
to the
incoming beam.
Final Adjuslments (After Aligning)
1. Turn the laser Head 's turret ring to "OTHER", if it 's not already there.
2. Select the Exit port 's small aperture.
3. Rotate the bezel until its sc ribed - line is parallcl to thc slot in the Optical Square.
4. look at the side of the Optical Square fa cing the Reflector. If you don't sec two dots, adjust
the Reflector
Mount's micrometer head that co nlrol s verlical motion until both dots appear
on the side of the Optical Square.
a. Turn the
Int er ferometer bezel until the dot s line up p.uall elto the slot in the Optical
Square.
b. Adjust the Reflector Mount 's horizontal motion micrometer until both dots arc
symmetrical about the scibed line at the center of the Optical Square's sial. (Sec
Fjgure 12 -9.)

HP 5528A Specifications

General

Brand	HP
Model	5528A
Category	Measuring Instruments
Language	English