Table of Contents
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1.9
5501A
LASER
TRANSDUCER
SYSTEM
SPECIFICATIONS
The
5501A
Laser
Transducer
System
specifications
are
listed
in
Table
7-7.
Table
7-7.
5507A
, '
ier
Transducer
System
Specifications
plane
mirror
interferometer,
ENVIRONMENTAL
(non-operatin
For
systems
with
107648,
O ° C
to
40°C
(32OF
to
104OF).
0%
to
95%
relative
humiditv.
RESOLUTION:
0.16
micrometers
(6
microinches)
or
0.08
micrometers
(3
microinches)
using
plane
mirror
interferometer
(10706A).
NOTE
l
ncreased
resolution
available
via
-40°C
to
7S°C
(-40°F
to
+167OF)
resolution
extension.
0%
to
95%
relative
humidity.
ACCURACY:
ENVIRONMENTAL
(operating):
33.5
parts
per
million.
O°C
to
55OC
(32OF
to
13OoF).
RANGE:
Up
to
60
meters
(200
feet)
depending
on
con-
- - - - -
ditions
(sum
of
axes
for
multiaxis
configu-
rations).
ENVIRONMENTAL
(extreme
tests):
I
NUMBER
O F
AXES:
All
system
modules
have
been
tested
to
Up
to
6
depending
on
system
configuration
I
and
environmental
conditions.
-
----
,
inch)
peak-to-peak
excursion
on
all
M A X I M U M
ALLOWABLE
LASER
BEAM
three
orthogonal
axes.
ATTENUATION:
13
dB
(95%).
M A X I M U M ALLOWABLE
LASER
BEAM
LATERAL
OFFSET:
+5
mm
(33.2
inch).
An
interferometer
or
retroreflector
may
be
offset
by
a
maximum
of
k2.5
mm
(S.1
inch)
since
the
reflected
beam
is
displaced
by
twice
the
retroreflector
displacement.
4
I
withsiand
the
following
extreme
conditions:
Vibration:
10
to
55
Hz
at
0.25
mm
10.010
I
Shock:
30
G
for
11
milliseconds.
I
Electromagnetic
Compatability
(EMC):
MIL-16181D
for
interference,
suscepti-
bility,
magnetic
conditions.
Power
Excursions:
10
microsecond
spikes
of
100
volts
positioned
fr
to
360°
of
power
line
phase.
1.10
5501A
LASER
TRANSDUCER
SYSTEM
THEORY
O F OPERATION
The 5501A Laser Transducer System is an ac laser interferometer consisting of a two-
frequency Zeeman laser, the necessary optics to route the laser beam to the photodetectors
(receivers), and some method of converting the relative motion of the retroreflectors to elec-
tronic pulses. One of the simpler methods of accomplishing this is illustrated and commented
in Figure 7-3.
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