Installation guide

Troubleshooting
Troubleshooting Harmonic Spurious
1-102
To Verify Harmonic Performance at the RF Output
1. Signal Generator Settings
a. Set the frequency of the signal generator to the harmonic frequency being measured.
For example, when planning to measure the second harmonic of a 1 GHz signal,
set the frequency of the signal generator to 2 GHz.
b. Set the power level of the signal generator to +4 dBm (+7.5 dBm for Option UNB).
2. Spectrum Analyzer Settings
a. Connect a spectrum analyzer to the RF Output connector of the signal generator.
b. Set the frequency of the spectrum analyzer to the harmonic frequency being measured.
To continue with our example, set the frequency of the spectrum analyzer to 2 GHz.
c. On the spectrum analyzer, press the
Peak Search and Marker Delta keys.
The Marker should indicate approximately 0 dBm.
3. Signal Generator Settings
a. Set the signal generator to the fundamental frequency of the harmonic being measured.
To continue with our example, since the harmonic being measured was at 2 GHz,
the signal generator should be set to 1 GHz.
4. Spectrum Analyzer Settings
a. On the spectrum analyzer, read the power level (and record it for future reference in case further
troubleshooting is necessary).
The Marker should indicate a power level in dBc; this is the power level of the harmonic being
measured.
b. Compare the power level of the Marker against the specified harmonic performance level for your
signal generator.