Easily Measure Varying Levels Of Modulated Power Compared To A Reference - Keysight X Series Measurement Manual

Easily Measure Varying Levels of Modulated Power Compared to a
Reference
This section demonstrates a method to measure the complex modulated power of a
reference device or setup and then compare the result of adjustments and changes to
that or other devices.
The Delta Band/Interval Power Marker function will be used to capture the
simulated signal power of a reference device or setup and then compare the resulting
power level due to adjustments or DUT changes.
An important key to making accurate Band Power Marker measurements is to insure
that the Average Type under the Meas Setup key is set to "Auto".
Step
1 Connect the source RF
OUTPUT to the analyzer
RF INPUT as shown.
2 Set up the signal sources.
3 Select the mode.
4 Preset the analyzer.
5 Tune to W-CDMA signal.
6 Set the analyzer reference
level.

Easily Measure Varying Levels of Modulated Power Compared to a Reference

Action
a. Set up a 4-carrier W-CDMA
signal.
b. Set the source frequency to 1.96
GHz.
c. Set the source amplitude to
−10 dBm.
• Press Mode, Spectrum Analyzer.
• Press Mode Preset.
• Press FREQ Channel, Auto
Tune, 300, MHz.
• Press AMPTD Y Scale, Ref
Level, 0, dBm.
39
Measuring Multiple Signals
Notes