Figure 2-27. Second Harmonics Distortion Test Setup
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: 50.1 MHz
4
Center
5
,
4
5
5
,
4
0
5
,
4
.
5
,
4
1
5
,
4
M/
5
Frequency Span: 17.935 kHz
4
Span
5
,
4
1
5
,
4
7
5
,
4
.
5
,
4
9
5
,
4
3
5
,
4
5
5
,
4
k/m
5
RBW: 30 Hz
4
Bw/Avg
5
,
NNNNNNNNNNNNNNNNNNNN
RES BW
,
4
3
5
,
4
0
5
,
4
x1
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 the signal generator, adjust the amplitude until the power meter reads
0
20
6
0.1 dBm.
5.
On the HP 4395A, press
4
Trigger
5
,
NNNNNNNNNNNNNNNNNNNN
SINGLE
to make a sweep.Wait for the completion of the
sweep.
6.
Press
4
Search
5
,
NNNNNNNNNNN
MAX
,
4
Marker
5
,
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
1MODE MENU
,
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
FIXED 1MKR
to place the delta marker reference
at the peak of the carrier.
7. Press
4
Center
5
,
4
1
5
,
4
0
5
,
4
0
5
,
4
.
5
,
4
2
5
,
4
M/
5
to set the HP 4395A center frequency to 100.2 MHz.
8.
Press
4
Trigger
5
,
NNNNNNNNNNNNNNNNNNNN
SINGLE
to make a sweep.Wait for the completion of the sweep.
9.
Press
4
Search
5
,
NNNNNNNNNNN
MAX
to move the delta marker to the peak of the second harmonic distortion.
Record the delta marker reading in the performance test record (\T
est Result" column).
2-68 Performance Tests
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