Agilent Technologies E1401-90493 Manuale Utente Pagina 73

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Chapter 2 73
Performance Verification Tests
8. Noise Sidebands - Wide Offsets: Agilent E4402B, E4404B, E4405B and E4407B
Part 3: Noise Sideband Suppression at 5 MHz
1. Press the following analyzer keys to measure the noise sideband
level at 5 MHz:
FREQUENCY, CF Step, 5 MHz
Center Freq,
Single
Wait for the analyzer to average ten sweeps.
2. Press
Peak Search (or Search) and record the marker amplitude noise
reading in Table 2-11 as the Upper Sideband Noise Level at 5 MHz.
3. Press the following analyzer keys to measure the noise sideband
level at
5 MHz:
FREQUENCY, ,
Single
Wait for the analyzer to average ten sweeps.
4. Press
Peak Search (or Search) and record the marker amplitude noise
reading in Table 2-11 as the Lower Sideband Noise Level at
5 MHz.
5. Press
.
Part 4: Noise Sideband Suppression at 10 MHz
1. Press the following analyzer keys to measure the noise sideband
level at 10 MHz:
FREQUENCY, CF Step, 9.99 MHz
Center Freq,
Single
Wait for the analyzer to average ten sweeps.
2. Press
Peak Search (or Search) and record the marker amplitude noise
reading in Table 2-11 as the Upper Sideband Noise Level at 10 MHz.
NOTE A spur may exist at 10 MHz offset from the carrier. Measuring at ±9.99
MHz offset from the carrier will yield a noise sideband level worse than
the reading at ±10 MHz offset.
Press the following analyzer keys to measure the noise sideband
level at
10 MHz:
FREQUENCY, ,
Single
Wait for the analyzer to average ten sweeps.
3. Press
Peak Search (or Search) and record the marker amplitude noise
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