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138 Chapter 2
Performance Verification Tests
18. Absolute Amplitude Accuracy (Reference Settings): Agilent E4402B, E4403B, E4404B,
E4405B, E4407B, and E4408B
Tracking Error = Channel A Power − Channel B Power
For example, if Channel A Power is
−14.07 dBm and Channel B
power is +6.23 dBm, the splitter tracking error is
−20.30 dB.
Tracking Error: _______ dB
10.Proceed to Part 2: Absolute Amplitude Accuracy, Preamp Off.
Part 2. Absolute Amplitude Accuracy, Preamp Off
Figure 2-20 Absolute Amplitude Accuracy Test Setup
1. On the synthesized signal generator set the controls as follows:
FREQUENCY, 50 MHz
AMPLITUDE
, +6 dBm
RF ON
AM OFF
FM OFF
2. Press Preset on the analyzer. (Press the Factory Preset softkey, if it is
displayed.)
3. Use a BNC cable and adapter to connect the AMPTD REF OUT to the
INPUT 50
Ω.
4. Press
System, Alignments, Align Now, All. Wait for the auto alignment
to finish. Press
System, Alignments, Auto Align, Off.
5. Refer to Figure 2-20. Disconnect the reference sensor from the fixed
attenuator. Connect the fixed attenuator to the input of the analyzer
using an adapter. Do not use a cable.