The following calibrations must be performed prior to running this adjustment:
- all synthesizer calibrations
- all power calibrations
- IQ ABUS Calibration
- IQ Prelevel Calibration
- IQ VBLO Calibration
- IQ Calibration
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The following calibrations must be performed prior to running this adjustment:
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The goal of this calibration is to further refine the flatness of the modulated signal from the DUT. Again, this calibration is broken into 2 components, the RF sub section and the base band subsection. The nine bands of the RF subsection are re-calibrated to remove non linearity, and stored away. Following, the Baseband subsection is then calibrated to remove non linearity. This time, the calibration is started from the data generated during the IQ Channel Flatness Coarse Calibration which gives a much better starting point for the calibration. When the channel correction is enabled in the DUT, the calibrated data is used as inputs to a FIR filter that flattens the output response of the DUT. Its goal is to provide a very flat signal across 160 MHz of signal bandwidth.
No additional equipment required.
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All test equipment requires a 30 minute warmup period to ensure accurate performance. |
Preset all test equipment and the signal generator.