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Making Measurements

Making the Spectrum (Frequency Domain) Measurement

Changing the View

The View/Trace key allows you to select the desired view of the measurement from the following. You can use the Next Window key to move between the multiple windows (if any) and make it full size by Zoom.

Spectrum - Provides a combination view of the spectrum graph in parameters of power versus frequency with the semi-log graticules, and the I/Q waveform graph in the parameters of voltage and time. Changes to frequency span or power will sometimes affect data acquisition.

Spectrum Linear - Provides a view of the linear spectrum graph in parameters of voltage and versus frequency with the linear graticules. Changes to frequency span or voltage will sometimes affect data acquisition.

Figure 4-2 Spectrum Measurement - Linear Spectrum View

NOTE

For the widest spans, the I/Q window becomes just “ADC time domain

 

samples”, because the I/Q down-conversion is no longer in effect. This is

 

not the case if the Input Port is set to either I/Q, I only, or Q only and you

 

have connected baseband I/Q signals to the I/Q INPUT connectors.

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Agilent Technologies E4406A manual Changing the View, Making Measurements, Making the Spectrum Frequency Domain Measurement