Chapter 5
169
Functional Testing
Phase Noise
d. Press
Restart
.
e. Wait for the instrument to finish averaging.
f. Read the noise marker value in dBm.
g. Record the measured value in the Measured Y
i dBm/Hz
column in
Table 5-19, “Phase Noise Report.”
h. Calculate the phase noise in dBc/HZ using the following equation
and record in the Calculated Y
i dBc/Hz
column of
Y
i dBc/Hz
=
Y
i dBm/Hz
−
Y
i ref
Table 5-18
Measurement Settings
Source Frequency
(MHz)
Center Frequency
(MHz)
Noise Marker
Frequency
(MHz)
600
600.010000
600.010000
600
600.030000
600.030000
900
900.010000
900.010000
900
900.030000
900.030000
1900
1900.010000
1900.010000
1900
1900.030000
1900.030000
Table 5-19
Phase Noise Report
Carrier
Frequency
(MHz)
Frequency
Offset
(kHz)
Measured
Y
i dBm/Hz
(dBm/Hz)
Calculated
Y
i dBc/Hz
(dBc/Hz)
Test
Limit
(dBc/Hz)
600
10
600
30
900
10
900
30
1900
10
1900
30
Содержание E4406A
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Страница 139: ...139 5 Functional Testing ...
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