To Verify Harmonic Performance At The Rf Output - Keysight N5171B EXG Service Manual

Troubleshooting
Troubleshooting Harmonic Spurious

To Verify Harmonic Performance at the RF Output

1. Signal Generator Settings
2. Spectrum Analyzer Settings
3. Signal Generator Settings
4. Spectrum Analyzer Settings
Keysight X-Series Signal Generators Service Guide
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.
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.
a. Set the signal generator to the fundamental frequency of the
harmonic being measured.
In this example, because the measured harmonic was at 2 GHz, the
signal generator should be set to 1 GHz.
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.
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