Table of Contents
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Model 5528A
Angular
Measurements
8-16
MEASUREMENT DISPLAY SETTINGS
Measurement Units
Your Angular measurements
are
displayed in units
of
"arc·seconds" ("
ARC·SEC"),
regardless
of
the
selling of the
Measurement Display's rear·panel
"English/Metric" swilch.
"Arcseconds"
is a short way
of saying "seconds of
arc". One arcsecond equals
113600
of
one
degree.
Another
way
to
visualize
an
arcsecond
is
that it is
equivalent
to 0.000005 mm (or
inches)
for
every
mm (or
inch)
from
your
measurement
axis.
(This is
Ihe same as
0.5
mm in 100
metres,
or about
114-
inch in
abom
4000
feet.)
NOTE
Measurement Display
se
llin
gs
are the
same
with
or
without
sensors.
Measurement Mode Keys
ANGLE
o
Push the ANGLE
key.
Set-up
Keys
t RESEj
Io;;;j
~
NOTE
1. To
enler a
number for any key
-
a.
Use
Ihe ENTRY keys 10
speci
fy the
numeric
value
then-
b.
Press
the selected SET UP
to assign
the val ue
to
Ihal key
.
2.
To
check
the
current
statu
s of
any of these keys, just press
th
e
key. Then press Ihe key
again
to
return to
you
r
previous
mode.
3.
More information about
each
key
is
available in
Section
16
o
f
this
User's
Guide.
Your measurement dala can be multiplied by a
va
lu
e
from
"0"10 "2"
before it is
displayed. This key allows
you
to
specify
what the multiplier
value
will be. One
use of this
capabil ity
is 10 allow
you to
extend Angular measurement accuracy,
described
in
the
"WHAT
AFFECTS ACCURACn"
section,
below.
If
you
do not
specify some
olher
value,
"1.0" will
automalically be
used
as the multiplier
here.
Determine which tilt direction
you
want to be
"
positive" and use this bulton to
make
sure
it
happens.
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