Mode
l 5528A
Alignment
Techniques
The
only
alignment methods that can be used for all measurement types are
"GUNSIGHT"
and
"AUTOREFLECTI
ON
".
The "OVERLAPPING DOTS" and "
MAXIMUM
MEASUREMENT
READ
I
NG"
alignment methods are used for Distance and Velodty measurements only.
TRANSLATING AND TURNING
THE
LASER
HEAD
Each
alignment
method
requires translational and
turning
movements
of
the
Laser
Head. It
is
easiest to separate these
motions
into
vertical and horizontal components. You will
use
these
adjustments over and over again,
so
you should become familiar with them
now
, If you haven't
already. This
Information
is
presented in Seclion 4, with Figure
4-3
and Figure 4-4.
GUNSIGHT METHOD
This
method
can
be used for any measurement.
Procedure
1. Attach targets
to
the Optics
as
instructed in each measurement type
's
" In
st
allation and
Al
ignment
of
Optics" section. Both Optics must be
at
the " ncaf end
of
travel" and already
adjusted around the laser beam.
2.
Move
the
Retroreflector
or
Reflector (depending
on
the type
of
measurement you're
making) away
from
the
Laser.
Stop movement when the laser beam
is
about
10
move
off
the
Retroreflector's
or
Reflector
's
target surface,
or
when
Ihe
Oplics reach the end
of
travel.
3.
Now
make a
se
ries
of
adjustments
to
the
Laser
Head
untillhe
beam returns to where it
origina
ll
y
was
on
the reflecting
Opti
c
or
ils larget. (This process
is
illustrated in Figure 15-1
.)
a.
Ro
lal
e (
turn
)
The
I.a
se
r Head to move the beam back toward the crosshairs
or
etched line
on
your
reflecting
Optic
. (
See
step
"2"
in Figure 15-1. )
As
soon
as
you
do
this, the
La
se
r beam will be partially
or
fully blocked by the
I
nterferometer's
target
hole
.
b.
Translate the
Laser
Head vertically and horizontally
unTil
the beam again goes through
the
hole
in the Interferometer's
largeT
(
See
step
"3"
in Figure 15-1.)
If
the
Laser
beam is nOI
now
hilling
the correct
point
on
the reflecting
Optic,
perform
again the process
of
turning
and translating the
La
se
r Head,
4.
Continue
this process
of
moving
the Reflecting
Optic
and then adjusting the
Laser
Head
as
many times
as
necessary
until
the
end
of
travel
Is
reached. At this point, the laser
will
be
aligned to the table and
to
the optics.
Summary
1. Translate the laser Head
or
move the optics
to
initially position the optics around the laser
beam according
to
instructions given
in
each measurement section.
2.
After
mo
ve
ment
of
one
optic:
a.
Rotate (
tilt
or
turn
) the
Laser
Head
any
time the
Laser's
beam doesn't hit the
Retrorefleclor's target.
b. Translate
the
laser Head linearly (
up
/
down
or
left/ right) any time the
la
ser beam
doe
s
n't
go
through
the
Interferometer'
s target hole.
To Next Page
Loading...
Need help?
General
