HP 4395A - Page 102

Figure 2-28. Third Order Intermodulation Distortion Test Setup
2. Initialize both signal generators. Then set their controls as follows:
Controls Settings
Modulation OFF
Amplitude 0 10 dBm
RF Signal OFF
3. Press 4
Meas
5 ,
N
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
ANALYZER TYPE ,
N
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SPECTRUM ANALYZER , 4
Preset
5 to initialize the HP 4395A. Then
set the controls as follows:
Control Settings Key Strokes
Input Port: R
4
Meas
5
NNNNN
R
Center Frequency: 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 ,
NNNNNNNNNNNNNNNNNNNNNNNNNN
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.
2-70 Performance Tests