Model
5528A
Squareness
Measurement
s (In a Vertic
al
Plane)
13-6
install
the
Straightness Reflector. Third, you will make final adjustments to
the
tilt of
the
Reflector
to maximize Beam
Strength.
1. Installation
and
Alignment of
the
I
nterferometer
/ Relroreflector assembly and
the
Optical
Square.
You
will use
pro
ce
dure
s similar to
those
in
Sectior,
11
of t
his
User's Guide to
dothi
s.
You
will
set
up
and
align these Optics just
as
if
the
Optical Squilre
were
the
Straightness Reflector.
2.
Installation
of
the
Straight
ne
ss
Reflector
After
the
Optical Square
and
the
Interferometer
ha
ve
been
inSialled and aligned you
will
us
e
the
la
ser
beam
to position the Reflector.
3. Final Adjust
ment
s
You
wi
ll use a special t
echnique
to adjust the Reflec
tor
to bring the beams back 10 the laser
Head
and
provide
sufficient
beam
strength.
Pro
cedure For Installation and Alignment of Interferometer and Optical Square
1. Align
the
la
se
r H
ead
to
the
horizonal axis using
the
most
co
nve
ni
e
nt
method:
a. Autoreflection
b.
Gunsight (target
s)
c. Overlapping
dot
s
NOT
E
Di
stan
ce
optics must
be
u
sed
with the overlapping dots
method
.
2.
A
tt
ac
h the Optical Square to
it
s
mount
, as shown
in
Figure 13-4.
3.
AHa
ch the Turning Mirror's base to
the
side of
the
Optical Square,
as
shown
in
Figure
13-5.
4. Identify the axes yo u are going
to
meas
ure
to make your Squilreness measurement.
5.
Po
sition
the
Opti
c
al
Square so thai
its
top slot lines
up
with your vertical
axis
and
its
side slot
faces along the
seco
nd
meas
urement
axi
s.
NOT
E
The
Op
tical Square must be square relative
to
the
machi
ne
. Use
parallel bars in the machin
e's
T
-s
lots
or
other
ma
chine features
to
align
the
Optical Square relative
to
the
ma
chine. (The Optical
S
quare
must be s
quare
relative to the
in
coming laser beam
within
minutes of a
degree
or measurement errors
wilt
be
indu
ce
d
.l
6.
Mount
the Turning Mirror
on
its
base, using
ils
ca
ptive screw
s,
such th
at
one
opening
faces
where
the laser Head w
ill
be located,
and
the
other
fa
ces upward.
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