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M od el 5528A
S quareness
M
easurements
(In
a
Verti cal Pl ane
l
10.
Further adjust
the
Reflector M ount
's
m
icrometers
um
il
the
Beam Strength
meter indica tio
n
is
at
a
ma
ximum.
Checking
Alignment For Beam
Strength
Move the ma
chine over its
full
travel range,
makin
g sure
Ihal BEAM STR ENGTH
is
adequat
e
(in
the
green
areal
al all
posilions.
If
beam
s
tl
e
n
~
lh
decreases
al
any
point
,
-
a.
Check
(or
cl
ipping o
f
the bea
m b
y Ihe Optics.
Rep
ositio
n
Ih
e
Optics,
if
necessa
ry,
and
then
re·check
.
b.
If
you
see
part
o
f th
e
return beam
o
n th
e edge
of the
Ex
it
(top)
p
ort, rotate
th
e
laser Head
unlil Ih
e
return beam di
sappears.
If
this
didn 't
correct the
"redu ced
bea
m strength
" pro blem,
refer 1
0 t he "
Manual
Remova
l
o
f
Slope"
in
format io
n
below.
NOTE
If
the
BEAM
S
TRENGTH ind ication
never reaches the
right·hand
half
o
f
the meter's range,a
t
any
point
along the Optics'
full travel
distance,
your Opt
ic. .. may
need
cleaning.
Thoroughl
y
cl
ea
n all
optical surfa
ces
,
as
described in
Sectio
n 20
o
f
this User's Guide.
Checking For
Mis-
Alignment
Betwee
n the
Lase
r Beam
and
the
Optics
Travel Path
("Slope")
Follow the inst ruct ions
given
under this
head
ing in
Section
11.
Manual Removal
of Slope
Follow the
In structi
ons
gi ven und er
this
headin
g il'
Section '1
. Try to remove as
mu ch
slo
pe
as
possible
; this w
ill
help
make
il easier
to
get adequat
e
beam strength when you
measure
th
e
second
axis.
Measure
ment Display Settings
1. Use
th
c
instru
ctions
given in
Sectio
n
10 o
f
(his
User's
Guide.
2.
Wh en ent
er ing valucs
for [he SET UP
keys.
b
e sure yo
u
choose the co
rrecl
sign
co
nventi on for
DIR SEN
SE. The
sign
conventio
n
is
crili cal il' a Squ
areness
measurement. Use th
e
instruction
s
gi ven in
Section
21 of
this User's
Guid
e.
under the
heading o
f "Squ
areness
Sign
Conve
nti
ons"
.
Making A Measurement
System Checks
1. Use
th
e
instru
ctions
in Secti
on
10
fo
r "SYSTEM
CHECKS"
,
under "
M
A
KI
NG A MEASU
RE-
M ENT
"
.
13·17
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