Agilent Technologies 4395A - Improving Dynamic Range (NA Mode)

Improving
Dynamic
Range
(NA Mode)
Improving Dynamic
Range (NA
Mode)
This
section
introduces
you
two techniques
for enhancing
the dynamic
range of
4395A.
These
are:
A
djusting
the
IF
Bandwidth
Using
List
Sweep
Y
ou
can
increase
the dynamic
range by
applying the
highest allowable
power
.
The
output
power
can
be
set
by
pressing
4
Source
5
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
POWER
.
A
veraging
can
also
enhance
the
dynamic
range
.
See
\T
o
Use
the
A
veraging Function
"for
further
information.
A
djusting the
IF Bandwidth
A
djusting the
IF bandwidth
can lower
the
noise
ower
.
F
or
example
,
if
you
changed
the
IF
bandwidth
to 1/10
of the
current
setting
(say
,
100
Hz
instead
of
1
kHz),
the
measurement
noise
oor
would lower
by
approximately
10
dB
.
This
technique
increases
the
dynamic
range
,
but
slows
down
the
sweep
process.
1.
Press
4
Bw/Avg
5
.
2.
Press
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
IF BW
.
3.
Press
4
*
5
or
4
+
5
,
or
enter
an
IF
bandwidth
value directly
from the
numeric
keypad.
IF Bandwidth 30 kHz
IF Bandwidth 100 Hz
Figure 9-4. Setting IF Bandwidth (IFB
W)
9-6 Advanced Techniques for Optimizing Measurements