Table of Contents
Advertisement
Model
5528A
Velocity
Measurements
7-6
3.
The laser Head's
" READY"
indiccllor must
be
lighted
steadily (i.e.,
not
blinking).
4.
Make
sure you
arc properly
interfaced with other
instruments as needed to record
your
data.
a.
If
you
record
your
data
manually,
no interf"dng is
necessary.
b.
If
you want
to record
your
data
automatically,
but
you
aren't using the HP Dimensional
Metrology Analysis
System or another
Hp·IB
controller, you
must have an Hp·IB
compatible
printer
conneded
to Ihe Measurement Display unil
,
via
the rear
panel
Hp·1B
connector.
You must
also
make
sure
the Measurement
Display
is
set
up to
output
to
a
printer
via
Hp·IB.
See Section
18
and
follow the instructions for
"Data
Transfer
without
an
HP-IB
Controller",
c.
For formatted
automatic
records,
you shou
ld have the HP Dimensional Metrology
Analysis
System or an
Hp·HJ
controller
with
your own
programs 10 make it work
with
the laser
Measurement System. The HP
Analys is System comes
with an HP Personal
Computer and
programs
to make it
work with
the laser Measurement
System.
The operating
milnual for
the
Analysis
System will
cICplain how 10 use it. In either
case,
you
must first make sure the
Measurement Display
is
set
up 10
accept a controller via
HP-IB.
See Section
18 and follow
the instructions for
"Data
Transfer with an I-JP·IB
Contro ller".
Procedure
1.
Press the RESET key
on
the Measurement
Display
unit,
or
the Remote
Control
unit's RESET
key
.
(Remembcr to do this on
ly when
the Optics are as
close together as
possible to prevent
"
deadpalh
error".)
2.
Set
up the Measurement Display to make measurements at
specific
time intervals
(I.e.,
"on
the
fly").
(If
you
are interfacing to
a
controller,
you should
probably do this through its
programs.)
a.
Enter
the lime interval
you
want between measurements (0.05
to
12
seconds
).
b.
Push
the
AUTO RECORD
key. This wi
ll
start the
automatic taking
of
data.
(See Section
16
for more information
about using this
key.)
3.
Move one optic along
the full measurcment
path.
A
measurement is
made automatically
every so
many
seconds
until
you
press the
AUTORECORD key
again
,
4.
Press the
AUTORECORD
key when thc end
of
travel
is reached. This will turn
off the
AUTO
RECORD,
and stop
the recording
of
measurements.
I
f
an
HP Personal
Computer or
an HP·IB Printer is not
connected to
the Measurement Display
unit, pressing RECORD
or
AUTORECORD wil
l
cause
the message
"
lr
Error"
to be displayed.
WHAT AFFECTS ACCURACYl
The
laser
Measurement
System's Velocity
measuring
accuracy depends on
the
System's
ability
10
adjust
for
environmental changes and on your
ability 10
set
up
and operate
the
system
properly.
In
the neICI
few
pages
we
will describe
some
potential measurement
errors, examine
how they affect
Velocity measurements, and what can
be done about thcm to maximize measurement accuracy.
Advertisement
Table of Contents
