HP 5528A User Manual page 104

Laser measurement system
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Model
5528A
Distance Measurements
NOTE
Be
sure
the Measurement Display unit's rear-panel
ENGlISH
/
METRIC swi
tch is
set
tothe
system
you
will be using,
and
that
you
enter your
value
in the appropriate
units.
Determine
the
resolution
you
need from the accuracy
you want.
Enter the
number of places
you
want, and
then press
this key. Resolution
extends
to
five places (0.00001
)
for millimetres
,
and
to
six
p laces (O.OOOOOl
)
for inches
.
This key
also
allows
you
to
"
smooth
"
your
data by
cntcring
a positive
number.
A
negative resolution
number w
ill
remove any
smoothing.
Smooth-
ing
reduces the
effects
of
vibration.
Measurement Display Settings
(without
Sensors)
Measurement Mode
Keys
DISTANCE
Setup
Keys
EJ
Push the DISTANCE key.
NOTES
1.
Making a measurement without using the
au
tomati
c sensors
is practical
only
when the measurement environment
is
not
changing,
since
it is difficult to
continually
update
your com-
pensation data manually
while
the measurement is
running.
2.
To
enter a value for any
key
-
a.
Use
the ENTRY keys to
specify
the numeric
value,
then
-
b.
Prcss the key to
assign
the
va
lue
to that
key.
3.
To check the
current
status
of
any
of these
keys,
just
press the
key. Then
press
the key again,
to return to
the
mode
you
selected earlier.
4. More information about
each
key is
avai lable
in Section 16
of
this
User's Gu ide.
a.
You
must
calcula te th
e
V.D
.l.
compensation number using Section
19
of
this
User's Guide.
You wi
ll need to
determine
Ihe air pressure
and
the
air
temperature
to de-
termine
the Compensation values
shown in
Section
19.
6-21

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