I/Q Measurements
Overview
I/Q tab allows DUT characterization under modulated signals. IQSTAR uses IQ values sent to the Vector signal Generator and fetches the IQ values from the VSA. The IQ data is resized, realigned and demodulated in IQSTAR to extract user-selected parameters (ACPR, EVM, CCDF, PAPR, Dynamic AM-AM and DPD analysis). In this section, the VSA does not need to have any software option.
Requirements
Available measurement types are linked to the Schematic
configuration and to selected Calibrations. In order to get
access to I/Q measurement, the following conditions must be respected:
- Two (2) or three (3) Power Meters, RF Source and Vector Signal Analyzer need to be enabled in the Schematic
- Scalar Calibration needs to be enabled
To run I/Q measurements, the bench must be correctly set and calibrated. Once these
steps are done, it's possible to initialize the system ( 
) to access to
I/Q tab:
