Agilent Technologies E1401-90493 Manuale Utente Pagina 138

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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
.
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.
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