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Adjustments

I/Q Gain/Offset/Quadrature Calibration

4-41

I/Q Gain/Offset/Quadrature Calibration

Description

This calibration determines the required I/Q gain, offset, and quadrature calibration constants/arrays that

will minimize the I/Q modulation imperfections on the A13 Output. Several calibration constants are

determined and then the I/Q gain, offset, and quadrature DACs are adjusted over frequency to minimize the

static vector modulation errors. The results are stored in the signal generator as calibration arrays.

Required Test Equipment

•None

Procedure

1. Preset the signal generator.

2. Follow the instructions as they appear on the controller’s display.

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Agilent Technologies E4438C Guida di Installazione Pagina 133