Agilent Technologies 4395A - AM Signal Measurement (SA)

AM
Signal
Measurement
(SA)
AM Signal
Measurement (S
A)
In
this
example
,
the following
parameters for
AM signal
measurement are
derived:
Carrier
amplitude
(
E
c
)
and
frequency
(
f
c
)
Modulating
frequency
(
f
m
)
and
modulation
index
( m
)
T
est Signal
The
following test
signal is
used in
this
example:
AM
Signal
Frequency
( f
c
):
100 MHz
Modulating
signal frequency
(
f
m
):
10 kHz
Measurement
Setup
Connection
Connect
the
test
signal
source to
the
R
input
port.
Analyzer
Settings
Press
4
Preset
5
.
Then
set
the 4395A
's controls
as
follows:
Desired
Setting
K
ey Strokes
MEASUREMENT
block
Select
Spectrum
Analyzer
4
Meas
5
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
FF
F
F
F
F
F
F
F
F
F
F
F
F
F
ANALYZER
TYPE
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
FF
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
SPECTRUM
ANALYZER
A
CTIVE
CHANNEL
block
Select
channel
1
4
Chan
1
5
(default)
MEASUREMENT
block
Select
R
input
port
4
Meas
5
F
F
F
F
F
F
FF
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
SPECTRUM:
R
(default)
SWEEP
block
Center
frequency
100
MHz
4
Center
5
4
1
5
4
0
5
4
0
5
4
M/

5
Span
frequency
200
kHz
4
Span
5
4
2
5
4
0
5
4
0
5
4
k/m
5
Carrier
Amplitude
and
Frequency
Measurement
Using
the
Marker
Press
4
Scale
Ref
5
and enter
the reference
value if
the trace
needs
rescaling.
1.
Press 4
Sea
rch
5
to turn
the marker
on.
2.
Press
N
N
N
NN
N
N
N
N
N
N
MAX
to
search
for
the
carrier
signal.
The
carrier
amplitude
and
frequency
are
displayed in the upper right
corner as shown in Figure 10-17 .
10-18 Examples of Applications