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Model 5528A
Squareness Mcasurcmenls (In a Vertical
Plane)
13·12
c.
Remove
the
Interfer ometer
from
the Re
lrorefJector.
d.
Place
the
gageblo('k over
the
Optical Square's
top slot
(see
Figure
13·6;,).
The beam
should
st
rike the
gageblock and be
reftected
back towards
the
laser Head
.
e.
Adjust
the
Turning Mirror
so
that
the refleded
beam
strikes
the
l
aser
Head
and is
ce
ntered
on
its
exit port.
NOTE
If
you
cannot position
the Turning
Mirror using the
reflected
beam.
con
tinue
with
sleps "f",
"g"
and
"
h",
and skip
step
"i".
took
at the top of the Optical Square, and adjust
the Turning
Mirror
so
thaI
the two
dots arc in
line
with the
scribed
line
and
symmenical within
the
opening (see
Figure
13~8
).
f.
Remove the
gilgeblock.
g.
Screw
the Interferomet
e
r into
the
Re
lrorefleclor.
h.
Rotate the Interferometer
bezel
until
ilsscribed line is oriented 90
degrees
relative
10
the
Optical Square's
slot.
i.
look
at
the lap
of the Optical Square.
;:md
translate
the
laser Head unlilthe two
dots
are
in line
with
the scribed line
and
symmetrical
within
the
opening.
(See
figure
13-8.)
If
Ihe Optics arc
very
dose together, you
shou
ld
insert
a piece of
paper
to
see
the
dots.
NOTE
This
process
will
be impossible
if
the
Optics were
not
positioned
well enough
in step
"11".
If
you
have
problems with
this
step, go
back
\0
step
"11"
and redo
h.
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