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Baseband Relative Power

The Baseband Relative Power tab provides a centralized location for specifying the relative power of the baseband generators (BBGs) in your configuration without the need to maintain an external spreadsheet.

If you load a configuration that doesn't use an internal BBG, the table will be blank except for the heading of each column.

 

Baseband Relative Power Settings

The relative power settings in this table are initially blank until a power calibration is performed.

BBG

This column displays the baseband generator and selected generation type for each BBG in the loaded configuration.

Desired Relative Power (dB)

This setting is active when Enforce Relative Scaling is set to On. In this mode, setting the Desired relative Power automatically adjusts Runtime Scaling to maintain the correct Actual Relative Power.

Desired Relative Power is the power of a BBG relative to the reference power of the max output power user wants to set.

NOTE PXB will automatically adjust the “Desired Relative Power” to make sure that max “Desired Relative Power” is 0. For example, there are two BBGs, the desired relative powers are set to BBG 1 -10dB, BBG2 -20dB by user; the actual desired values are adjusted by PXB to be BBG 1 0 dB and BBG 2 -10 dB.

If power calibration result is available and “Enforced Relative Scaling” is On, the runtime scaling and actual relative power results will be updated when user adjusts the “Desired Relative Power” setting.

Input Power (dBFS)

Displays the measured BBG power (before BBG Runtime Scaling). The value is displayed in dBFS (dB, relative to full-scale voltage of 1.4142V).

Runtime Scaling (dB)

This setting is active when Enforce Relative Scaling is set to Off. In this mode, the user can manually adjust Runtime Scaling to maintain the correct Actual Relative Power.

Output Power (dBFS)

Displays the calculated BBG power after BBG Runtime Scaling. The value is displayed in dBFS (dB, relative to full-scale voltage of 1.4142V).

Actual Relative Power (dB)

Displays the BBG power relative to the reference power of the maximum output power that PXB BBGs actually output.

 

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