262 Chapter 2
Performance Verification Tests
30. Spurious Responses: Agilent E4401B and E4411B
5. Set the analyzer control as follows:
SPAN, 50 kHz
BW/Avg, 1kHz
Video BW Auto Man, 100 Hz
6. Wait for two sweeps to finish, then press the following analyzer keys:
Peak Search (or Search)
Mkr →, Mkr → CF Step
Marker, Delta
FREQUENCY, Center Freq, ↑
7. Press Peak Search (or Search). The marker delta (∆ Mkr1) amplitude
reading is the second harmonic suppression.
8. If the analyzer has a 50 Ω input, calculate the second harmonic
intercept (SHI) using the second harmonic suppression value read in
step 7 as follows:
For example, if the second harmonic suppression is –62 dB, the SHI
would be 42 dBm:
9. If the analyzer has a 75 Ω input, calculate the second harmonic
intercept (SHI) using the second harmonic suppression value read in
step 7 as follows:
For example, if the second harmonic suppression is –65 dB, the SHI
would be 99 dBmV:
10.Record the SHI result as Entry 3 in the performance verification test
record.