Agilent Technologies 4395A - Page 55

7.
RECEIVER NOISE
LEVEL TEST
(NA)
Description
This test
measures the
4395A receiv
er noise
levels
(noise
o
or)
in
the
net
w
ork
analyzer
mo
de
at
IF
BW
10
Hz.
This
measures
the
noise
lev
el
using
the
mark
er
statistics
function (mean)
when
the
inputs
are
terminated.
In
this
test,
the
noise
lev
el (trace
mean v
alue) is
measured in
linear
format
[Unit].
Then
the
measured
values
are con
v
erted
to
log
magnitude
format
[dBm].
This
is
done
to
a
v
oid
sk
ewing
the
data
with
the
mark
er
statistics
function.
Specification
Noise
lev
el
Noise
Lev
el
F
requency @IFBW=10
Hz
100

freq.
<
100
kHz
<
0
85
dBm
100
kHz
 freq.
< [
0 115
+
f
1
/100
]
dBm
1:
f
is
measuremen
t
frequency
(MHz).
T
est
Equipment
50
T
ermination
(three
required)
:
::
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
909C
Opt.
012 or
part
of
85032B
Procedure
1.
Connect
the test
equipment
as
sho
wn
in
Figure
2-9
.
Figure 2-9. Receiver Noise Level Test Setup
Performance Tests 2-21