Using
the
Marker
to
Tune
the
Receiver
The
marker
function
has
two
modes
of
operation.
In
tune
mode
,
the
receiver
retunes
the
center
frequency
while
maintaining
the
current
span
when
the
marker
is
moved
to
either
edge
of
the
display
.
This
is
the
default
mode
.
In
span
mode
,
the
receiver
will
not
retune
the
receiver
when
the
marker
is
moved
to
either
the
start
or
stop
frequency
of
the
current
span.
1.
T
o
see
how
the
tune
and
span
modes
work,
set
the
receiver
to
a
known
state
by
pressing:
4
PRESET
5
2.
T
o
use
the
internal
calibrator
as
the
test
signal,
press:
4
INPUT
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
VIEW
CAL
ON
OFF
ON
3.
Use
the
marker
to
point
to
the
300
MHz
calibrator
signal
by
pressing:
4
TEST
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
MARKER
TUNE
SPN
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300
MHz
4.
Turn
the
windows
display
mode
on
by
pressing:
4
CTRL
5
The
300
MHz
calibrator
signal
is
displayed
in
the
center
of
the
lower
window
.
The
frequency
span
is
80
MHz.
5.
Select
the
marker
tune
mode
by
pressing:
4
TEST
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
MARKER
TUNE
SPN
TUNE
6.
Rotate
the
knob
clockwise
until
the
marker
reaches
the
right
side
of
the
window
.
As
you
continue
to
rotate
the
knob
the
receiver
changes
frequencies
.
The
zone
marker
is
also
moving
in
the
upper
overview
window
indicating
the
frequency
range
being
displayed.
7.
Continue
rotating
the
knob
until
the
600
MHz
calibrator
signal
is
located
in
the
center
of
the
display
.
8.
Press
the
up-arrow
(4
*
5 )
step
key
.
The
marker
moves
to
the
right
edge
of
the
display
.
9.
Press
the
up-arrow
(4
*
5 )
step
key
,
again.
The
receiver
retunes
and
the
marker
moves
to
the
left
edge
of
the
display
.
10.
Continue
pressing
the
up-arrow
(4
*
5 )
step
key
until
the
900
MHz
calibrator
signal
is
displayed
on
the
screen.
11.
T
o
change
the
marker
mode
to
span,
press:
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
MARKER
TUNE
SPN
SPN
Note
that
when
the
knob
is
rotated
counter-clockwise
the
receiver
does
not
retune
when
the
marker
reaches
the
edge
of
the
display
.
Making
Compliance
Measurements
3-15