Performance Verification
4-28 AFG3000 Series Arbitrary/Function Generators Service Manual
Harmonics Distortion Test
This test verifies the harmonic distortion using a spectrum analyzer.
1. Connect the arbitrary/function generator to the spectrum analyzer as shown in
Figure 4-7.
Figure 4-7: Harmonic distortion tests
2. Push the Default front-panel button and OK menu button to recall the
arbitrary/function generator default setup.
3. Set up the arbitrary/function generator using the following steps:
4. Set up the spectrum analyzer according the frequency setup of the
arbitrary/function generator.
5. Set the Ref Level of the spectrum analyzer to 8 dBm.
6. Read the signal level in the Fundamental frequency for each signal. Use this
level as a Reference value in step 4.
7. Verify that the differences between the reference level and the signal level in
the frequency of higher-order at each frequency are below the limit specified
in the following tables.
Select menu Setting Operation
Function Sine Sine (front)
Frequency 20.00 kHz: AFG3011/AFG302xB
1.000 MHz: AFG310x
1.000 MHz: AFG325x
Frequency/Period (front)
Amplitude Units Vpp TopMenu > Amplitude/Level Menu >
-more- > Units > Vpp
Amplitude 1.00 Vpp Amplitude/High (front)
Channel 1 Output On On (front)
Spectrum analyzer (WCA280A)
50 Ω BNC coaxial cable
CH1 Output
AFG3000 series
BNC(Fe)-N(Ma) adapter
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