HP 5528A User Manual

Model S528A
Square ne ss Mea surements (In a Vertical Plane)
13 · 16
c. If one dot is brigh t er than the other, rai se or lower the Re {1e ctor Mount until both do ts
are of equal intensity, and then rep ea t step " b" abo ve .
d. Adjust the Reflec tor Mount's hori zontal motion micrometer until both dot s d isa ppear
into the Opt ical Square's slot.
Figure 13~11 . Result of Verticaf Motion Adjustment to the Straightness Reflector.
5. look at the l ase r H ea d. You s hould see two dot s. If you don 't see the dot s -
a. look at the si de of the I nterfer omet er facing the Op ti ca l Square.
b. You sho uld see either one or t wo clo se ly s pa ce d dots on the Interferometer.
c. Adjust the Reflec tor Mount 's micrometers until the dot (s ) disappear into the I nter~
ferometcr.
d. l oo k at the la se r Head. You sho uld now see the dOl (s) on the frO llt of the la se r He ad .
6. Turn th e Interf e romet er bezel until the dots overlap.
7. Adjust the Reflec tor Mount's micrometer s ulltil the overlapping dots are centered on the exit
port , and '; h" l o" the sma ll aperture.
8. Se lect the large aperture f or the la se r Head's exit port.
9. Turn the I nterferometer bezel slightly until the laser Head 's "SI GNAL" light comes on and
the BEAM STRENGTH meier indi ca ti on is in the green area .
NOTE
Onl y a slight adjustment of the bezel is ne cess ar y to do this.

HP 5528A Specifications

General

Brand	HP
Model	5528A
Category	Measuring Instruments
Language	English