Agilent Technologies Agilent 4396B User Manual
Page 81
Figure
4-14.
Wide
Band
FM
Signal
Measurement
The
frequency
deviation
(1f
peak
)
can
be
derived
from
the
following
equation:
1f
peak
=
j 1M
k
r j
2
where
1Mkr
is
the
marker
sweep
parameter
value
shown
in
Figure
4-14.
In
this
example
,
the
frequency
deviation
is
about
981
kHz.
Press
4
Ma
rk
er
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
PRESET
MKRS
when
you
are
nished
with
this
measurement.
Carrier
Level
and
Modulating
Frequency
The
carrier
level
and
modulating
frequency
can
be
derived
using
a
method
similar
to
the
AM
signal
measurement.
In
this
example
,
the
zooming
function
is
used
to
measure
the
carrier
and
the
adjacent
signal.
4.
Press
4
Displa
y
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DUAL
CHAN
on
OFF
to
NNNNNNNNNNNNNNNNNNNN
ON
off
.
5.
Press
4
Ma
rk
er
5
to
put
the
maker
on
the
carrier
frequency
.
6.
Press
4
Ma
rk
er !
5
NNNNNNNNNNNNNN
MORE
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
ZOOMING
APERTURE
0.2
4
21
5
.
7.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
CROSS
CHAN
on
OFF
to
NNNNNNNNNNNNNNNNNNNN
ON
off
.
8.
Press
NNNNNNNNNNNNNNNNNNNN
RETURN
NNNNNNNNNNNNNNNNNNNNNNNNNN
MKR
ZOOM
to
zoom
up
to
the
carrier
signal.
9.
Press
4
Chan
2
5 .
10.
Press
4
Scale
Ref
5
and
enter
reference
vale
if
the
trace
needs
to
be
rescaled.
11.
Press
4
Ma
rk
er
5
100
4
M/
5
to
move
the
marker
to
the
career
frequency
.
The
carrier
amplitude
can
be
read
as
the
marker
value
.
12.
Press
4
Ma
rk
er
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
1MODE
MENU
NNNNNNNNNNNNNN
1MKR
to
put
the
1maker
on
the
carrier
.
13.
Press
4
Search
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SEARCH:PEAK
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
LEFT
PEAK
(or
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
RIGHT
PEAK
)
to
move
the
marker
to
the
sideband.
Spectrum
Measurement
Examples
4-13