Anritsu MT8801C, Operation Manual, Page: 108 / 137

Section 4 Peformance Tests
4-26
(4) Test procedure
Step Operation procedure
1. Press the spectrum analyzer Preset key.
2. Execute Cal.
3. Set the LPF cutoff frequency to approximately 12.8 MHz.
4. Set the signal generator output to 10 MHz, –30 dBm.
5. Set the spectrum analyzer as follows:
Center Freq: 10 MHz Span: 10 kHz
Reference Level: –30 dBm Attenuator: 0 dB
Input terminal: Aux Input
6. Adjust the signal generator output level so that the spectrum waveform peak point moves to the
Reference Level (line at the top of the screen scale).
7. Move the marker to the peak of the spectrum waveform, and set the marker to Delta Marker.
8. To display the second harmonic on the screen, set the center frequency to double the fundamental
frequency. Since the delta marker level indicates the level difference between the fundamental wave
and the second harmonic. Read the delta maker level.
9. Change the input frequency in accordance with the table below, and repeat steps 3 through 8.
Second Harmonic Distortion Test
10 MHz
1 GHz
12.8 MHz
1.2 GHz
–55 dBc
–60 dBc
Signal generator
output frequency
LPF
cutoff frequency
Delta marker
level
Rating
Measurement
uncertainty
Effective
upper limit
–56.2 dB
–61.2 dB
±
1.2 dB