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1. AlPHA·NU
MERIC DISPLAY: lED
indicators
used to display numeri
c
data readout
s
or
alpha·character status
information.
2.
BEAM
STRENGT
H
Meter: Indicates the re lative strength
of
the laser
beam measuremen
t
signal.
The
meter
reading
ciln
be used to i1id in
optirnizing
Iht!
optica
l
alignment of the
laser and
measurement
optics.
Oeam strength indications within the
green
area
of
the meter
arc
required for proper
operation.
3.
lASER
ON
Indicator:
Indicates that powe
r
is
being provided to th(·
Lilscr Head, and that
the
Laser tube is
activated
and
emitting
a
lase
r
beam
.
This
indicator
is
connected
in
pa
rallel
with
Ihe LASER
ON
indicators
on
the Laser
Head.
All
of these
indicators
shou ld be lightcd
at the same
time.
4
.
RESET Key
:
Erdses
all
measurement da ta tak
en
up
10
the time it
was
pre .. sed.
Releases
Lase
r Measurement
System
from
Hp·
IB
control
(if
it
was operating under
HP·IB
co
nlrol
). Clears error
message, if
one
is
being displayed
.
Returns Laser Measuremenl
System
to fIlost·rcccnt
ly·
chosen
mea
su
rement
mode.
NOTE
The RESET
key
dears
o
nly
the mt'a!ouremen
t
da
ta.
A value
entered via an ENTRY
key
will
not be
changed
by RESET.
Addi tional inform.uion
aboullhe
RE
SET
key
is
presented
in
text
outSide
this
figure.
5.
DISTANCE Key
:
Programs
the LdSer Measurement System
fur
d
Distance
Measureme
nt.
Distann' Measurements are
described
in
Section 6 of
this
Users Guide.
6.
VElOCITY Key
:
Prog
r
am~
the
I.a~er Me<l~uremen
t
System
for
a VelOcity
Measurement. Velocity Mea
su
reml'nl
s
are described in
Section 7 of
this User's Guide.
7.
ANG
LE
Key
:
Program
s
Ihe
I.aser MeaSurement System
fo
r
an Angular
Measurement.
An~ular
Measureme
nt
s
are described in
Section
8
of
this
Users Guide.
8.
STRA
IGHTNESS
Keys:
Either
of
these
keys
programs the
Laser
Measure-
menl
System for
a
Straightness
me.lSurement
.
Straightness
measurements
are
described
in Section
10 and Section
11 of
this
User's
Guide.
The LONG
STRAIGHTNESS key
is
used for
a
measuremen
t
in
the
range from
1000 mm
to 30,000 mm (39.37
inches
to 1200
inches).
The
SHORT STRAIGHTNESS
key is used for
iI
measurement in the
range
100 nun
to
3000 mm (3.94
inches
to 120
inches).
9.
AUTO
RECORD Key
:
This key provides
a way for you
to record data on
an
external
device,
automatically, at a
fate
you
choose.
Additional information about the AUTO RECORD key
is
presented in
text
outside
this figure.
10.
PRESET Key:
Selects a
function depending
on
the
current
measurement
mode.
Offset
values
Gill
be preset in the distance and velocity
modes.
Mul tiplication fa
ctors
ca
n be
preset
in the angular
and straightness
modes.
The
default
value~
are
"0"
for Distance
dnd
Velocity,
and
"1"
for Angu lar
and
Straightness.
The PRESET
key
can
be used any lime without
loss
of
measurement
data.
Changing a
preset value in anyone
particular modI'
does
not affed the presct
values of
the
other
modes.
Additional information
about
the
PRESET
key is presented in
tCOICt
outsidco
this
figure.
11.
MATL
TEMP
Key:
The
Ma
terial
Temperature
Sensor(s)
are used
to
compensate
fOf
thermal
ex
pansion
or
contradion
o
f
the material
being
medsured
by the Laser Me.lsu rement
System.
The MATl
TEMP key
can be
used
any
time
without
Ims
of
measurement da
ta.
The
MATL
TEMP
key
can
be
used
10:
a.
display
the
averagt'
ternperaturf>
of ilil
sensors connected, -
Model
5S2GA
Controls. Connectors,
Indicators
b.
display the
temperature of
each individual sensor
connected, -
c.
display the
default
average temperature value
(20<lC
or
68°
f
)
if
all
~e
n
so
r~
are disconncdcd. -
d.
enter
dll
aver.lge workpiC'Ce temperature when
all
sensors are
disconnected.
Additional
information
about the
MAll TEMP
key
is
prescnted in text
outSide
this figure.
12. V.O.l.
Key
:
The
V.O.l.
key
can
be used to display
or select the
Velocity· of·
light
Compensation
number.
Addi tiona
l
Information
about the V.O.l. key
is
presented in text
outside
this
figure.
13.
RESOL Key
:
Selects or
displays
the
number
of
significant decimal
places
displayed
on
the
Measurement
Display
unit
during measurements. This
key
also
sets
the
smoothing
function on
or
off.
The RESOl key
C
dn he used
any time
without
loss
of
measurement
data.
Addi tional
inform.ltion
about the RESOL key
is
presented in text outside
this
figure.
14.
EXP COEff
Key
:
Used to enter
or display the expansion
cocfficien
t
of
the
material
being measu red.
Additional information about
the EXP
COEFF
key is prcsented
in
tcoxt
outside thiS
figure.
15.
OIR
SENSE
Key
:
Reverses the
sense
of the measurement. For
example,
if
the
optics
are moving apart and the display indicates
an
incredsing positive
displacement.
pressing the
DIR
SENSE
key wil
l result
in the
same
movement
ca
using
an
increasing
negative displacement
or
a
decre,
,~i
n
!:l
positive displacernent
.
The OIR
SENSE
key may
be
pressed at any time
without losing:
the
current
dat.!
.
Also, this
key rcofleets
the
current
position
about
Ihe preset va
lue.
For
ex.!mple,
if the preset
value is
5.00000
and
the di splay
reads
7.00000.
pressing
Ihe DIR
SENSE
key will
result in
a display
of
3.()()()()().
16.
ENTRY Keys.
The ENTRY keys allow the user
to
assign
values
to certain
parameters
as
described
ilbove. No
measuremen
t
information
is
lost
when
entering
numbers
into the Measurement
Display.
17.
lIN[
Switch.
When
sel to
ON
.
power
is applied to
the
Measurement
Display
unil.
the
laser Head.
and any sensor'i
Ih"t
art!
ronneded
to
the
Me<lsurement Display unit
.
The
lASER ON
indicators
illuminate and the
laser tube
is powered. Also
upon
application of
power. the
system starb
in
to
d
warm-up period
during
which
a
self·test diagnostic
routine
is
eXPorted.
Figure
·
' 6·
·
'
.
550BA
Mea.
\ urf-'lIlenl
Di\play
_
I
roor
Panc/
16-3
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