Agilent Technologies Agilent 4396B User Manual
Page 113
![background image](/manuals/44282/113/background.png)
Absolute
Output
Level
Measurement
The
analyzer
can
show
the
characteristics
input
level
versus
output
level
by
using
the
absolute
measurement
capability
in
the
network
analyzer
mode
.
1.
Press
4
Sw
eep
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
CHAN
COUP
on
OFF
to
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
CHAN
COUP
ON
off
to
couple
the
sweep
parameters
of
both
channels
.
2.
Press
4
Ma
rk
er
5
N
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
MKR
COUP
on
OFF
to
N
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
MKR
COUP
ON
off
to
couple
the
marker
between
both
channels
.
3.
Press
4
Chan
2
5
4
Meas
5
NNNNN
B
to
select
the
absolute
measurement
at
the
B
input.
4.
Press
4
Displa
y
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DATA
MATH
[DATA]
NNNNNNNNNNNNNNNNNNNN
OFFSET
.
Then
input
the
value
of
the
attenuator
that
is
connected
between
the
DUT
and
the
B
input.
In
this
example
measurement,
a
30
dB
attenuator
is
used.
Therefore
,
enter
30
4
21
5 .
5.
Press
4
Scale
Ref
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
AUTO
SCALE
if
the
trace
needs
to
be
rescaled.
6.
The
analyzer
displays
the
input
versus
output
power
levels
.
The
marker
shows
the
input
and
output
power
levels
at
the
01
dB
gain
compression
point.
7.
Press
4
Displa
y
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DUAL
CHAN
on
OFF
to
NNNNNNNNNNNNNNNNNNNN
ON
off
to
display
both
channel
(see
Figure
5-24).
Note
that
you
must
subtract
3
dB
from
the
input
value
readout.
This
is
necessary
because
the
input
signal
is
attenuated
by
the
power
splitter
that
is
between
the
RF
OUT
and
the
DUT
.
Figure
5-24.
Input
vs
.
Output
P
ower
Level
at
the
01
dB
Gain
Compression
P
oint
Network
Measurement
Examples
5-27