Model 5528A
Measurements Using a
Plane
Mirror
Interlerometer
APPENDIX
D
MEASUREMENTS
USING
AN
HP 10706A
PLANE
MIRROR
INTERFEROMETER
CONTENTS
I
NTRODUCTION
OPERAT
I
NG
S
PECifiCATION
S
HARDWARE
REQUIRED
OPT
I
ONAL
HARDWARE
REFEREN
CE
MATERIAL
Sm
-ING
5S0BA
MEASUREMEN
r DIS
PLAY
I
NTERNAL
SW
IT
CH
ASSEMBLY
Of
OPTICS
IN
STA
LLATION
AND
ALIGNMENT
OF
OPTICS
DISTANCE
MEASUREMENT
S
VELOCITY
MEASUREMENTS
INTRODualON
This User's GUide appendix provkies instructions for making distance and vel
ocity
measure-
ments
with
a plane mirror interferometer such
as
th
e
liP
10706A.
Al
though any
HP
5528A
sys-
tem can be u
se
d to make m
eas
urements
with
it
plane mirror interferometer,
on
ly tho
se
sys
tems
with
an
HI'
5508A
Measurement Displaywith
se
rial prefix of2732A
or
above,
or
units upgraded
to this standard with
EPROM
Upgrade Kit pi n 05508-60211, will give the correct measurement
on
the display. Previous units must have the di
sp
layed distan
ce
or
vciocity value divided
by
2
to
ge
l
Ih
e
co
rr
ec
t
an
swer.
The distan
ce
and
ve
lOcity measurements are made by measuring the change in position
of
one
of
the optics while
th
e other optic
is
held stationary.
See
Appendix A for a description
of
the
principles on which this measurement
is
based.
To
make a velocity measurement, begin
as
if you were making a dist
..
m
ce
measurement. Most
instructions for the
velocity measurement arc identical
to
tho
se
for a distance measurement.
Values for
se
t-
up
keys will
be
different, and you'll have
to
push the VELOCITY key instead
of
the DISTANCE key. Details are in Section
7,
Velocity Measurements.
OPERATING SPECIFICATIONS
Distance
Accuracy:
SERIES 2732A
Distance measurements are accurate within the following toleran
ces
depending on the velocity ofUght compensation
method
and operat·
ing temperature. Values shown apply at a known material tempera-
ture with a known coefficient
of
exp,1nslon.
D·'
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