Model
5526A
Squarenes5
Measurement
s (In a Verti
ca
l Plane)
13-4
REFERENC
E
MATERIAL
Physical Setup
of
the
la
se
r Head and Tripod
Section 4
I
nter
co
nne
c
tion
s,
Turn-
on
......................
• .
•.
.........
•. •
......
Section 5
Straightness Measurements (
Hori
zontal Axis)
..........................
Section
10
Straightness Measurements (Using the Straightne
ss
Re
lr
oreflector)
......
Section
11
Alignment
Te
c
hnique
s
..............................................
Section
15
FIRST
-
AXIS
MEASUREMENT
(Vertical
Axi
s Us
in
g an Optic
al
Square)
The first-axis measurement
is
a verti
ca
l Straightness meas
urement
along a vertical
axi
s.
It
will be
s
imilar
to the Straightness measurement along a vertical axis de
sc
ribed in Section
11
, except you
will use
an
Opti
c
al
Square, and the Straightness Reflector will be oriented along a horizontal
axis
rather than along the vertical axi
s.
(
See
Figure
13-3.
)
Except
for
information
about instal
lation
and alignment
of
Optics, the instruc
tion
s presented
In
this User
's
Guide
Section
will
high
light the additional things you must
do
beyond the instruc
tion
s
given in
Section
11
. Installation and
alignment
instructions are given in
their
entirety below.
In
stallation
and
Alignment of Optics
Impo
rt
ant Considerati
on
s
1.
See
" I
MPORTANT
CONSIDERATI
ONS"
in
Sec
tion
11
.
2.
The
se
quen
ce
of
Optics along the laser beam is -
•
la
ser Head
•
Turning
Mirror
• Straightness Rel
rorefle
c
tor
•
Interferometer
• Optical Square
•
Reflec
tor
3.
Try
to
manually
remove
as
much
"s
lope
"
as
p
oss
ible,
once
your
se
tup
is aligned. This will
make
your
seco
nd
-axis
alignment
easier.
DE
SCRIPTION
For the meas
urement
of
the
first axis you will install and align the
Opti
cs
in three distinct steps.
First, you
will
In
sta
ll the
Optical
S
quare
, the
Interfer
ometer, and the Retroreflec
tor
, and align the
la
se
r Head to the path traveled by
the
Interferometer
and the Optical Square. Second, you will
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