2.
Set
the
frequency
span.
Press
4
SP
AN
5.
Note
that
SPAN
is
no
w
display
ed
in
the
active
function
blo
c
k,
iden
tifying
it
as
the
curren
t
active
function.
T
o
reduce
the
frequency
span|for
example,
to
20
MHz|either
k
ey
in
20
MHz,
or
use
the
STEP
4
+
5
k
ey
to
\step
do
wn"
to
this
v
alue.
(Lik
e
data
k
eys,
step
k
eys
can
also
b e
used
to
c
hange
the
n
umeric
v
alue
of
the
active
function.)
The
resulting
display
is
sho
wn
in
Figure
2-2 .
Note
that
the
resolution
and
video
bandwidths
are
coupled
to
the
frequency
span;
they
are
automatically
adjusted
to
appropriate
v
alues
for
a
given
span.
Sw
eep
time
is
a
coupled
function
also.
Figure
2-2.
20
MHz
Frequency
Span
Making
a
Basic
Measurement
2-3
Summary of Contents for 8560 E-Series
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