Evaluation
of
a
Varactor
Diode -
DC Bias
Sweep Using
List Sweep
Function (ZA
Mode)
7.
Choose
N
NN
NN
NN
NN
NN
NN
N
MORE
N
NN
NN
NN
NN
NN
NN
N
N
N
N
POWER
and press
4
0
5
4
1
5
4
3
5
4
2
1
5
to set
the power
for segment
1to
0
13
dBm.
8.
Choose
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
NN
DC
VOLTAGE
and
press
4
0
5
4
2
5
4
8
5
4
2
1
5
to set
the DC
bias
voltage
for
segment
1
to
0
28 V
.
9.
Choose
N
NN
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
RETURN
NN
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
SEGMENT
DONE
to
nish
dening
segment
1.
10.
Repeat
steps
4
through
8above
for each
of segments
2 through
15,
increasing
the
DC
bias
voltage
in
2
V
increments
from one
segment to
another.
Note that,
when
you
add
a
new
segment
by
choosing
N
N
N
N
N
N
N
N
N
N
N
ADD
,
the
new
segment
inherits
the
denitions
for the
immediately
preceding
segment.
Therefore
,
you
can
create
the
sweep
list
by
just
changing
the
DC
SOURCE
setting
for
each
subsequent
segment.
T
able
10-1.
Sweep
List
for
Evaluating
a
V
aractor
Diode
Segment
Number
Start
Frequency
Stop
Frequency
Measuring
P
oint
P
ower
IF
Bandwidth
DC
Bias
V
oltage
1 300 MHz 300 MHz 2
0
13
dBm
2Hz
0
28
V
2 300
MHz
300
MHz
2
0
13
dBm
2
Hz
0
26
V
3 300
MHz
300
MHz
2
0
13 dBm
2
Hz
0
24 V
4 300
MHz
300
MHz
2
0
13 dBm
2
Hz
0
22 V
5 300
MHz
300
MHz
2
0
13
dBm
2
Hz
0
20
V
6 300
MHz
300
MHz
2
0
13
dBm
2
Hz
0
18
V
7 300
MHz
300
MHz
2
0
13
dBm
2
Hz
0
16
V
8 300
MHz
300
MHz
2
0
13
dBm
2
Hz
0
14
V
9 300
MHz
300
MHz
2
0
13
dBm
2
Hz
0
12
V
10 300
MHz
300
MHz
2
0
13
dBm
2
Hz
0
10
V
11 300
MHz
300
MHz
2
0
13
dBm
2
Hz
0
8
V
12 300
MHz
300
MHz
2
0
13
dBm
2
Hz
0
6
V
13 300
MHz
300
MHz
2
0
13
dBm
2
Hz
0
4
V
14 300 MHz 300 MHz 2
0
13
dBm
2Hz
0
2
V
15 300
MHz
300
MHz
2
0
13
dBm
2
Hz
0
0
V
11.
When you
have nished
dening segment
15,
choose
N
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
LIST
DONE
to
exit from
edit mode
.
12.
Choose
N
NNNNNNNNNNNNNNNNNNNNNNNNN
NNN
LIST FREQ
to set the sweep mode to list sweep
.
Calibration
Calibrate the 4395A as described in \Evaluation of a Chip Capacitor
(ZA Mode)".
Caution
Do not attempt to perform
calibration or xture compensation while the 4395A
is applying external DC bias
.
Doing so could damage the calibration or xture
compensation standard.
Examples of Applications 10-37
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