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M
odel 5526A
First
loo
k
2-24
16.
Change the
M ater
ia
l
Temperature va lue to
25
D
C
by
pressing -
00
~
~
Note the new readi
ng.
Th is shows the importance o
f
havi ng
th
e correct Material
Temperature an
d
Expansio
n
CoeHicien
t val
ues when
you
are maki ng
a
d istance
measure·
men\.
19. Change
th
e units o
f measurement
by sw
it chin
g
the
rc
ar·
panel ENGLI
SH/
MET
RI
C
switch
to
its
ENGLI SH
posll ion.
CA
UTION
This
switch
has a
lack
to
keep it
from
accide ntally being
moved.
To
avoid
damaging the switch.
pull
its handle "oul" while you
arc
moving
it from
one
position
to the other. Releas ing
the
handle
allows
it
to
lock In
lis
new position.
Note
th at th
e values have
chan
ged fro
m
metric to
English un
its,
w
hen
yo
u
press
th
e
followin
g
keys
-
[RESO
j
~
~
~
U
Reso
luti on
wi
ll
now be
f
ive
places,
ins
tead
of fou
r.
Material Tem perature w
ill
now be 75.97
D
F.
The ex pansio
n
coefficient
will
now be 55.6
(times 10 e
in
ch/
degree
F).
Making an Angular Measurement
1.
Replace
th
e
linear
Retroref
lector
w
ith
the
Angul
ar Refledor, by unscrewing the two long
screws
on
the
Height
Adj
uster.
Pos
iti on t
he A
ngular Refl ector
so its
label
is on
top and
its Retrore flectors face
th
e Lase
r
Head.
Be sure
you
do not move the Heigh
t
Adj
uster
ar the Base wh ile
you
are making
thisch
angeof
O
pti
cs.
2.
Repl
ace the linea
r Int
erferometer
with t
he Angu
lar
Interferometer by unscrewing the two
lon
g screws o
n
the Heig
ht
Adjuster.
Posit ion
the
Angular
Interferomete
r
so the side wit
h
two
openi
ngs faces the
Angular
Reflector,
and the side
wit
h one
openi
ng faces the l.aser Hea
d.
Be sure
you
do
not
move
th
e
Height Adjuster or th
e Base while you are maki ng this
ch
ange of
O
ptics.
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