Agilent Technologies E4428C User Manual page 641

Figure 17-27
Performing a Manual Power Search
This task builds upon the previous task,
The ALC feature is disabled when compressed mode is used (
it is recommended that a manual power search is performed to ensure the correct output power level. See the
section "Special Power Control Considerations When Using Compressed Mode" on page 638
information.
This task will guide you in configuring and performing a manual power search. If desired, you can adjust the
power search settings to meet your individual test needs.
Amplitude Power Search
1. Press >
Mod references the power search on the rms value of the I/Q modulation, whereas fixed uses a 0.5 volt
reference during the power search operation.
From this current softkey menu, you can make adjustments to the other power search parameters to meet
your test needs.
Return Do Power Search
2. Press >
The ESG has now performed a power adjustment for the current carrier frequency. If you change
frequencies or the RF output power level, the power adjustment will have to be done again.
Return
3. Press the hardkey to access the previous compressed mode menu.
Chapter 17
Completed Compressed Mode Display
"Setting the Compressed Mode Parameters" on page
Power Search Reference Fixed Mod
>
.
W-CDMA Downlink Digital Modulation for Receiver Test
Setting Up for a Compressed Mode Signal
Page 2
Compressed Mode Off On
to Mod.
Page 1
615.
softkey set to On), and
for more
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