User`s guide

3-138 Agilent E6432A Microwave Synthesizer User’s Guide
Soft Front Panel Help
I/Q Calibration (Option UNG Only)
I/Q Calibration Dialog Box
If you would like to account for impairments in the internal
I/Q modulator circuitry, it is recommended that a calibration be
performed before each use, when I/Q signal levels being used have
changed, or if a long period of time has elapsed since the last
calibration. (For complete specifications, refer to “Specifications and
Characteristics” on page 6-1.)
I/Q Calibration, available from the Pull Down Calibration Menu, is
used to calibrate the I/Q Modulator and the I/Q Upconverter circuits.
Calibrate I/Q Modulator
The Calibrate I/Q Modulator button is used to run an iterative
algorithm that makes corrections for the impairments within the
synthesizer by adjusting the Gain, Offset, and Quadrature adjustment
DACs. This calibration does not account for impairments due to
external I/Q sources.
Restore Factory I/Q Modulator Calibration
The Restore Factory I/Q Modulator Calibration button can be used to
return to the original factory calibration values. All values from any
previous user calibrations are lost.