HP 5528A User Manual page 176

Laser measurement system
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Model 5528A
Straight ness
Measurements (Along A
H
orizonta
l
Axis
)
Measurements
at Specific
Physical
Locations
To have your
laser
Measurement
System
make measurements
on ly
at
specific
physical lo-
cations -
1.
Push the RESET key. (You
can
also RESET from the Remote
Control Uni!.
)
2.
Move
one of
the
optics
a predetermined distance.
3.
Press the RECORD button
on
the Remote
Control
Unit connected to the Measurement
Display. One measurement is made each time
you
press
this
button.
Measurements
at
Specified
Time
Intervals
To
have your
laser Measurement
System
make measurements at
specific
time intervals
(i.e., "on-
the-fly") -
1.
Push the RESET
key.
(You
can
also RESET from the Remote
Cont ro
l
Uni!.
)
2.
Enter the tirne interval
you
want between measurements
(0.05
to 12 seconds ).
3.
Press the AUTO
RECORD
key. This
will
sta
rt
the automatic taking
of
data
.
(See Section
16 for
more information about using this key.
)
4.
Move
one optic along
the full measurement path. A meaSlJrement is made
automatically
every
so
many
seconds
until
you
press the AUTO RECORD key again.
5.
Press the AUTO RECORD key when the end
of
travel
is
rea
ched.
This will turn
off
the AUTO
RECORD mode, and
end
the recording of measurements.
NOTES
Make
sure
the frequency at
w
hi
ch you
want
10
lake
measure-
ments isn't
greater
than
the
rate at which the Measurement
Display unit
can
updale measurements for the
reso
lution
you
have requested. (The update rate decreases as resolution in-
creases).
If you
exceed
the update rate for a
given
resolu
tion,
"Sr
Error" will be displayed.
Update rates are
given
in the laser Measurement
System's
Service
Manual.
If
an
HP
Personal Computer
or
an
HP-Ifj
Printer is not
con-
nected to the Measurement Display unit, pressing RECORD
or
AUTO RECORD will
cause
the message
"l
r
Error"
10
be
displayed.
WHAT AFFECTS ACCURACY?
Potential
Straightness
measurernent
errors
are unlike those for either Distance or Angular
measurernents.
10-21

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