Model
5528A
Straightness
Measurements
8.
Furth
er
adjust the Reflector
Moun
t
's
mic
rome
ters until
the
BEAM
STRENGTH
meter
indication is at a maximum.
Checking Alignment for Beam Strength
Move
the
machine
over
its
full
travel
range
, making
sure
that
BEAM
ST
RENGTH
is
adequate
(in
the
green
area)
at
all
po
si
tions.
If
beam
strength decreases
at
any point
,-
a. Check for
dipping
of the
beam
by
the
Optics. Reposition
the
Optics,
if
necessary,
and
then
re-check.
b.
If
you s
ee
part of the return
beam
on
the
edge
of
the
Exit
(
top
) port,
ro
t
ate
t
he
laser
H
ead
until the return beam disappears.
If this didn't
co
rrect
the
"redu
ce
d
beam
strength"
problem
, refer to
the
" MANUAL
REMOVAL
OF
SLOPE"
informati
on
be
low.
NOTE
If the
BEAM
STRENGT
H indication never
reaches
the
right-
hand
half of the
meter
's range, al any point along
the
Op
tics'
fu
ll
travel
distance. you r Optics may
need
cleaning.
Thorough
ly
dean
a
ll
optical surfaces,
as
described
in
Section
20
of this User's Guide.
Checking for Mis-Alignment Between
the
Reflector's Reference
Bisector and the
Optics Travel Path ("Slope")
1. Press the Meas
urement
Display unit's " LONG"
or
"SHORT"
STRAIGHTNESS
key
corres-
ponding
to the length of your measurelllent.
2.
Press the
RESET
key.
3.
Again, move
the
machine over
il
s full travel range, this
time
checking
the
Mea
s
urement
Display unil
lO
see
if
there
is
a steady ch
ange
in
the
number
displayed,
rather
than
either
a
random
scattering of
numbers
or a
co
nstant
number
.
A steady
change
of
numbers
indicates
mi
sa
lignment
be
t
ween
the
mac
hine
's travel
ax
is
and
the
la
ser
beam
.
Thi
s
error
is
called "sl
ope",
and
you must
remo
ve
it
-
either
manually
or
automa
tically (using a Calculator). See "WHAT
AFFECTS
ACCURACY?" information,
below
.
Manual Removal of Slope
Description
1.
AI
the
far
end
of tra
ve
l (
Le
., Optics
are
as far apart
as
possible), you
will
t
il
t
the
Straightness
Reflector to change the
di
spla
ye
d meas
urement
val
ue
to a newly-calculated
va
l
ue
"VN".
Tilting
the Reflector
in
this
way
moves
its
reference
bi
sedo
r toward the Oplic's travel path (
see
Figure 11-10 ).
11
-17
To Next Page
Loading...
Need help?
General
