Chapter 2 285
Performance Verification Tests
32. Spurious Responses: Agilent E4404B, E4405B, E4407B, and E4408B
reading is –10 dBm ±0.2 dB.
6. On the analyzer, press the following:
Peak Search (or Search), Marker, Delta
FREQUENCY, 600 MHz
BW/Avg, 10
Wait for the “VAvg 10” to appear along the left side of the display.
7. On the analyzer, press Peak Search (or Search). The marker delta (∆
Mkr1) amplitude is the second harmonic suppression.
8. Calculate the 300 MHz Second Harmonic Intercept (SHI) using the
second harmonic suppression value read in step 7 and the 300 MHz
Frequency Response Error (FRE) from Table 2-76 as follows:
For example, if the second harmonic suppression is –59 dB, and the
300 MHz FRE is –0.60 dB, the SHI would be 38.4 dBm:
9. Record the 300 MHz SHI as Entry 5 in the performance verification
test record.
Measuring 900 MHz Second Harmonic Distortion
1. Replace the 300 MHz low pass filter with the 1 GHz low pass filter
as shown in Figure 2-50.
2. On the synthesized sweeper, press the following:
CW, 900 MHz
POWER LEVEL, –10 dBm
3. Enter the power sensor 1 GHz calibration factor into the power
meter.
4. On the analyzer, press FREQUENCY, Center Freq, 900 MHz.
5. On the analyzer, press Peak Search (or Search).
6. Adjust the synthesized sweeper power level until the power meter
reading is –10 dBm ±0.1 dB.
7. On the analyzer, press the following:
Peak Search (or Search)
Marker, Delta
FREQUENCY, Center Freq, 1.8 GHz
8. On the analyzer, press the following: