Agilent Technologies E1401-90493 Instrukcja Użytkownika Strona 130

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130 Chapter 2
Performance Verification Tests
17. Absolute Amplitude Accuracy (Reference Settings): Agilent E4401B and E4411B
equipped with Option 1DS, Preamplifier.
Part 1. Splitter/Attenuator Characterization
Figure 2-17 Power Splitter/Attenuator Characterization Setup
1. Refer to Figure 2-17. 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
Inputs, Opt 1DP: Connect the 75 power sensor to Channel A of
the power meter. This will be the “reference” sensor.
2. Zero and calibrate both power sensors.
3. On the power meter, set the Channel A calibration factor to the
reference sensor’s reference calibration factor.
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 2-17, “Power
Splitter/Attenuator Characterization Setup,”. Use the 20 dB fixed
attenuator for 50
analyzers. Use the 10 dB fixed attenuator and
the minimum loss pad for 75
analyzers. Note that the reference
sensor connects to either the fixed attenuator (50
analyzers) or the
minimum loss pad (75
analyzers).
6. Set the synthesized signal generator frequency to 50 MHz and
amplitude to +12 dBm
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