Keysight EXG and MXG X-Series Signal Generators User’s Guide 111
Optimizing Performance for All Models
Using I/Q Mod Skew Cal
Using I/Q Mod Skew Cal
The I/Q mod skew calibration initiates the external calibration of the I/Q timing skew for the I/Q
modulator (RF output path). This feature will improve out-of-channel image rejection.
This calibration requires the RF output of the instrument to be connected to the RF input of a
spectrum analyzer.
This calibration needs to be run only once for any set of hardware.
For instruments that shipped with firmware release A.01.60 or newer, this
calibration does not need to be run unless hardware inside of the
instrument is repaired or replaced.
For instruments that shipped prior to the release of A.01.60 firmware, option
"R2C: Core FW enhancements, A.01.60" or newer must be purchased to
allow the full Int Channel Correction functionality, which corrects the
internal baseband generator RF and baseband magnitude and phase across
the 100MHz baseband bandwidth for all RF frequencies.
For instruments that shipped prior to firmware release A.01.60 that have had option
"R2C: Core FW enhancements, A.01.60" or newer installed, the Int Channel
Correction feature will achieve its full correction only after this calibration has been
run once.
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