Figure
2-28.
Third
Order
Intermodulation
Distortion
T
est
Setup
2.
Initialize
b
oth
signal
generators.
Then
set
their
con
trols
as
follo
ws:
Con
trols Settings
Mo
dulation
OFF
Amplitude
0
10
dBm
RF
Signal
OFF
3. Press
4
Meas
5
,
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
ANALYZER TYPE
,
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
SPECTRUM ANALYZER
,
4
Preset
5
to
initialize the
4395A.
Then
set
the
con
trols
as
follo
ws:
Control Settings
Key Strok
es
Input P
ort: R
4
Meas
5
NNNNN
R
Center F
requency: 100.25 MHz
4
Center
54
1
5
,
4
0
5
,
4
0
5
,
4
.
5
,
4
2
5
,
4
5
5
,
4
M/

5
Frequency Span: 400 kHz
4
Span
5
,
4
4
5
,
4
0
5
,
4
0
5
,
4
k/m
5
RBW: 1 kHz
4
Bw/Avg
5
,
NNNNNNNNNNNNNNNNNNNN
RES
BW
,
4
1
5
,
4
k/m
5
Video BW: 1 kHz
4
Bw/Avg
5
,
NNNNNNNNN
NNNNNNNNNNNNNNNNN
VIDEO BW
,
4
1
5
,
4
k/m
5
Reference Level:
0
10 dBm
4
Scale Ref
5
,
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
REFERENCE VALUE
,
4
-
5
,
4
1
5
,
4
0
5
,
4
x1
5
Input Attenuator R: 10 dB
4
Scale Ref
5
,
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
ATTENUATOR MENU
,
NNNNNNNNNNNNNNNNNNNNNNN
ATTEN R
,
4
1
5
,
4
0
5
,
4
x1
5
4. On signal generator 1, set the frequency to 100.2 MHz.
5. On signal generator 2, set the frequency to 100.3 MHz.
2-74 Performance Tests