Rigol DSA1030, User Manual

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Measurement Examples RIGOL
User’s Guide for DSA1000 Series 3-25
3.12 Measuring the Harmonic Distortion
DSA1030/DSA1030-TG that has installed the Advanced Measurement Kit option can
measure the harmonic distortion. In the example below, we use a generator (such as
RIGOL DG3101A) to output a sine signal with 100 MHz and -10 dBm as the signal
under measure.
Method 1: (Use marker function to measure)
Procedures:
1.
Device attachment
Connect the output terminal of the generator to the RF INPUT 50Ω terminal on
the front panel of the analyzer.
2. Use marker to measure
(1)
Reset the analyzer
－
Press Preset
(2) Set the parameters
－
Press FREQ
－
Press Center Freq and enter 200 MHz.
－
Press Stop Freq and enter 400 MHz.
－
Press BW
－
Press RBW and enter 100 kHz.
Now, you can see the fundamental wave, the second harmonic, and third
harmonic of the signal.
(3) Use the Peak and Marker functions to measure
－
Press Peak
Execute peak searching and activate a marker whose fundamental wave is
marked with frequency of 100 MHz and amplitude of -10 dBm.
－
Press Marker
－
Press Delta
－
Press Peak
－
Press Next Peak
The “Ref” of the marker is then placed at the fundamental wave while the
“Delta” is at the second harmonic. The measured value would be: the
frequency offset is 100 MHz and the amplitude difference is -31.18 dB.
－
Press Next Peak