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For the PSA Series and E4406A VSA Series 1xEV-DO measurement personality, why did the Modulation Accuracy (Composite Rho) measurement change names to become Modulation Accuracy (Waveform Quality) for PSA revision A.09.xx and E4406A VSA Revsion A.1...

In the cdma2000 standard, Rho is a common parameter name used to express modulation quality. However, 3GPP2 uses the term Waveform Quality in the 1xEV-DO conformance tests, and the 1xEV-DO measurement personality was updated to use the same terminology.