Model
5528A
SquareneS5 Measurements (In A
Horizonta
l Plane)
12-4
REFERENCE
MATERIAL
Physical Setup of
the
laser Head and Tripod
Sect
ion 4
Inte
rconnections, Turn-on
...............................
.
..
•
.•
.......
Section 5
Straightness Measurements (
Horizonta
l
Axis)
............................
Section
10
Straightness Measurements (Using the Straightness Re
tr
oreflector)
.........
Section
11
Alignment Techniques
..............
.
..............................
...
Section 15
FIRST-AXIS
MEASUREMENT
(Using an Optical Square)
The first-:lxis measurement
Is
:I horizontal Straightn
ess
measurement along a horizontal
axis
using
an
Optical Square.
(S
ee Figure
12
-
3.
) This
ax
is should be perpendicul
arto
the Straigh
tness
Re
fl
ector.
The instructions presented in this
Use
r
's
Guide Section
(S
ection 1
2)
will highlight the
additi
onal
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 Considerati
on
s
1.
See
" I
mporlant
Considerations"
in
bot
h Section
10
and Scclion
11.
2.
Try to manually remove
as
much
sl
ope
as
possible
once
you are aligned. This
will
make
your
second axis
alignment
much easier.
3.
If you can
move
the I
nterferometer
al
ong
one
of
the
axC5
, it may
be
possible
for
you to make
both
Straightness measurements
from
one
la
ser Head position.
One
StraightnC5s measure-
ment
would
be made
with
the I
nte
rfer
ometer
between the
St
raight
ness
Reflec
tor
and the
Optical
Square, and the second measurement
is
made
with
the Interfer
ometer
between the
Opti
ca
l Square and the laser head. To
do
this, make your fir
st
axis
be the
axis
that the
Interferometer
can't travel along.
De
scription
For the measurement
of
the
fir
st
axis
you
will
install and align the Optics in three distinct st
eps.
First . you will insta
ll
the
Op
tical Square, the Interferometer, ilnd the Re
tr
oreflector
(
if
required)
and align the
laser
Head to the path traveled by the
Interferome
ter and the
Opticil
l Square.
Second, you
will
insta
ll
the Straightness
Re
flector. Third, you will make final adjustments to the
tilt
of
the Reflector
to
maximize
BeC1m
Strength.
1.
Install
ation
and
Alignment
of
the I
nterferometer
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
replaced
with
the
Optica
l
Squa
r
e.
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