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Model
5528A
SquareneS5
Measurements (In
A
Horizonta
l
Plane)
12-4
REFERENCE MATERIAL
Physica
l
Setup o
f
the
laser
Head and Tripod
Sect
ion 4
Interconnections,
Turn-on
...............................
.
..
•
.•
.......
Section
5
Straightness
Measurements
(Horizontal
Axis) ............................ Section
10
Straightness
Measurements
(Using
the
Straightness
Retroreflector)
......... Section
11
Align
ment Techniques
..............
.
..............................
...
Section 15
FIRST-AXIS MEASUREMENT (Using an Optical Square)
The first
-:lxis
measurement Is
:I
horizonta
l
Straightness
measurement along a horizonta
l
axis using
an Optica
l
Square. (See Figure 12-3.
)
This
axis should
be perpendicu larto the Straightness
Refl
ector.
The instructions presented in this
User's
Gu
ide
Section
(Section
12)
will high light the
additional
things
you
need to know (beyond the information presented in
Section
10 and in
Section
11
)
in
order
to make
this
Squareness measurement.
Installation and Alignment of Optics
Important
Considerations
1.
See "
Imporlant
Considerations"
in bot
h
Section
10
and Scclion
11.
2.
Try to manually remove as much slope as possib
le
once
you
are
aligned.
This will make
your
second
axis alignment much easier.
3.
I
f
you can
move t he Interferometer along
one
of the axC5
,
it may be possible for
you
to make
both Straightness
measurements from
one
laser Head posi tion. One
StraightnC5s
measure-
ment
would
be made with the Inte
rferometer
between the
St raigh
tness Reflector and the
Optical
Square,
and the
second
measurement is made
with
the
Interferometer
between the
Optica
l
Square
and t
he
laser head. To do
this,
make
you
r
fi
rst axis
be the
axis
that the
Interferometer
can't
travel
along.
Description
For the measurement of the first axis
you will
install
and
align the Optics in th
ree
distinct steps.
First
.
you
wi
ll
insta
ll
the Optical
Square,
the
Interferometer,
ilnd
the Retroreflector
(if
required
)
and
align the laser Head
to
the path trave
led
by the
Interferometer
and the Opticil
l
Square.
Second, you
will insta
ll
the
Straightness
Re flector.
Third,
you will
make fina
l
adjustments
to the
tilt
of
the Reflector to maximize BeC1m
St
rength.
1.
Insta
ll
ation and
Alignment of
the Interferometer
and
the Optical
Square.
The procedures
below
arc
sim
il
ar to those
found
in
Section
10 and
Section
11
of
thiS User's
Guide, except
that the
Straightness
Reflector is rep
laced
with the Optica
l
Squa re.
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