214 Chapter 2
Performance Verification Tests
25. Frequency Response (Preamp On): Agilent E4401B
Procedure
Source/Splitter Characterization
1. Refer to Figure 2-36. Connect one RF power sensor to Channel A of
the power meter. This will be the “reference” sensor. Connect the
other RF power sensor to Channel B of the power meter. This will be
the “buried” sensor.
75 Ω inputs: Connect the 75 Ω power sensor to Channel A of the power
meter. This will be the “reference” sensor.
Figure 2-36 Source/Splitter Characterization Setup
CAUTION Use only 75 Ω cables, connectors, or adapters on instruments with 75 Ω
connectors, or damage to the connectors will occur.
2. Zero and calibrate both power sensors.
3. On the power meter, set the Channel A calibration factor to the
calibration factor of the reference sensor at 100 kHz.
75 Ω inputs: Set the Channel A calibration factor to the calibration
factor of the reference sensor at 1 MHz.
4. On the power meter, set the Channel B calibration factor to 100%.
Do not change this calibration factor during this test.
5. Connect the equipment as shown in Figure 2-36. Note that the
reference sensor connects to the 20 dB fixed attenuator.