Agilent Technologies 83620A Service Manual page 119

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3. On the spectrum analyzer, set:
Frequency:
pan:
Reference Level:
cale Log:
Bandwidth Resolution: 10 kHz
Video Bandwidth:
4. Measure the synthesizer RF output amplitude with the spectrum analyzer
marker.
5. Set the synthesizer to the CW frequency noted in step 1.
6. Measure the signal level with the spectrum analyzer marker. Change the
reference level as necessary.
7. Calculate the harmonic/subharmonic level where the harmonic/subharmonic
is less than the carrier, as follows:
Harmonic/Subharmonic Amplitude (dBc) = [Synthesizer RF output
0
amplitude (dBm) Harmonic/Subharmonic amplitude (dBm)]
For example:
RF Output
Harmonic
Harmonic (dBc) = [RF Out
Related Adjustments
None
In Case of Difficulty
Refer to the
Troubleshooting
HP 8360
ame frequency as the synthesizer
1 MHz
15 dBm
5 dB/Division
30 kHz
= +10 dBm
0
= 60 dBm
0
(Harmonic)]
0 0 0
= [10 ( 60 dBm)]
0
= [10 + 60 dBm]
0
= 70 dBc
manual.
purious ignals (Harmonics ubharmonics)
Performance Tests 2-49